Academic literature on the topic 'Maize - Morphology'
Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles
Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Maize - Morphology.'
Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.
You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.
Journal articles on the topic "Maize - Morphology"
1
Magalhães, P. C., T. C. de Souza, and F. R. O. Cantão. "Early evaluation of root morphology of maize genotypes under phosphorus deficiency." Plant, Soil and Environment 57, No. 3 (March 4, 2011): 135–38. http://dx.doi.org/10.17221/360/2010-pse.
Full textAbstract:
In Brazil savanna type of soils presents problems with phosphorus content. The selection and identification of maize genotypes to such environments is a high priority of Brazilian research. The purpose of this paper was to evaluate, in soils with different P concentrations, the dry mass attributes and characteristics of root morphology in eight maize lines with different genetic background and origins of the Breeding Program of the National Research Center for Maize and Sorghum. The experiment was carried out in plots prepared with two levels of phosphorus: high phosphorus (HP) and low phosphorus (LP). The experimental design was randomized blocks with three replications. The evaluation of the characteristics of the shoots and the root system morphology was performed 21 days after sowing. The WinRhizo program of images analysis was used for the root morphology. There were no differences between the phosphorus levels for the dry mass attributes. However, when we compared P levels, root morphology of L13.1.2 strain performed the highest surface area (SA) and total root length (RL), length of thin (TRL) and very thin (VTRL) roots in low P concentration. The root systems digital images analysis techniques allowed efficient discrimination of maize genotypes in environments with low P levels.
2
Costa, Carlos, Lianne M. Dwyer, Xiaomin Zhou, Pierre Dutilleul, Chantal Hamel, Lana M. Reid, and Donald L. Smith. "Root Morphology of Contrasting Maize Genotypes." Agronomy Journal 94, no. 1 (2002): 96. http://dx.doi.org/10.2134/agronj2002.0096.
Full text
3
Gomes, J. K. O., P. S. L. Silva, K. M. B. Silva, F. F. Rodrigues Filho, and V. G. Santos. "Effects of weed control through cowpea intercropping on mayze morphology and yield." Planta Daninha 25, no. 3 (September 2007): 433–41. http://dx.doi.org/10.1590/s0100-83582007000300001.
Full textAbstract:
Intercropping combined with competitive maize cultivars can reduce the use of herbicides to control weeds. The objective of this work was to evaluate the effects of intercropping cowpea and maize, as well as hand-weeding on maize morphology and yield. The experimental design was in randomized complete blocks, with treatments arranged in split-plots and five replications. The plots consisted of four maize cultivars (BA 8512, BA 9012, EX 4001, EX 6004) and the split-plots consisted of the following treatments: no-weeding; twice hand-weeding (20 and 40 days after sowing); and intercropping with cowpea ('Sempre Verde' cultivar), both maize and cowpea sown at the same time. The variables evaluated were: maize fresh green ears and grain yield; characteristics of internodes, leaves, tassels, ears, grains; plant height and ear insertion height; number of weed plants and species; fresh and dry biomass of weed species and cowpea. Ten weed species were outstanding during the experiment, many of them from the Poaceae family. No interactions were found between weed control method and maize cultivars for most variables evaluated; and plants from hand-weeded split-plots showed superior mean values compared to plants from non-weeded and intercropped split-plots, both not differing from each other. The cowpea was inefficient in controlling weed, reducing the maize yields and not producing any grain. The maize cultivars 'BA 8512' and 'BA 9012 showed the highest mean green ear yield, and the highest grain yield in hand-weeded, no-weeded and intercropped split-plots. On the other hand, the maize cultivar 'EX 6004' showed such high means only in no-weeded and intercropped split-plots. 'EX 4001 presented the worst means in these variables for hand-weeded, no-weeded ant intercropped split-plots.
4
Królczyk, Jolanta B. "Metrological changes in the surface morphology of cereal grains in the mixing process." International Agrophysics 30, no. 2 (April 1, 2016): 193–202. http://dx.doi.org/10.1515/intag-2015-0090.
Full textAbstract:
Abstract The paper presents a new idea of approach to the analysis of surface morphology of cereal grains. In this paper, the surfaces of maize were analyzed using an optical 3D measurement system to determine the surface morphology and parameters of surface topography. It was established how changes in the moisture influence on the surface characteristics. Comprehensive parametric analysis was conducted for maize grains with different moisture contents. The objective of this study was to comprehensively characterize the surface morphology of maize in contact area using standardized 3D roughness parameters as well as other characteristics such as structure direction and isotropy. This is the first study that has presented, elucidated, and discussed the relationships between some morphological parameters of cereal grains. This research contributes to better understanding of the mixing process. The main findings are: the values of roughness parameters kurtosis and skewness are characterized by higher values for maize grains with lower moisture, compared with maize grains with higher moisture content; there is a close relationship between the maize grain moisture content and the surface roughness parameters of kurtosis and skewness; maize grains have an anisotropic structure.
5
Liu, Guangzhou, Yunshan Yang, Wanmao Liu, Xiaoxia Guo, Jun Xue, Ruizhi Xie, Bo Ming, Keru Wang, Peng Hou, and Shaokun Li. "Leaf Removal Affects Maize Morphology and Grain Yield." Agronomy 10, no. 2 (February 13, 2020): 269. http://dx.doi.org/10.3390/agronomy10020269.
Full textAbstract:
Increasing planting density is an important practice associated with increases in maize yield, but densely planted maize can suffer from poor light conditions. In our two-year field experiments, two morphologically different cultivars, ZD958 (less compact) and DH618 (more compact), were planted at 120,000 plants ha−1 and 135,000 plants ha−1, respectively. We established different leaf area index (LAI) treatments by removing leaves three days after silking: (1) control, no leaves removed (D0); (2) the two uppermost leaves removed (D1); (3) the four uppermost leaves removed (D2); (4) the leaves below the third leaf below the ear removed (D3); (5) the leaves of D1 and D3 removed (D4); (6) the leaves of D2 and D3 removed (D5). Optimal leaf removal improved light distribution, increased photosynthetic capacity and the post-silking source-sink ratio, and thus the grain yield, with an average LAI of 5.9 (5.6 and 6.2 for ZD958 and DH618, respectively) for the highest yields in each year. Therefore, less-compact cultivars should have smaller or fewer topmost leaves or leaves below the ear that quickly senesce post-silking, so as to decrease leaf area and thus improve light distribution and photosynthetic capacity in the canopy under dense planting conditions. However, for more compact cultivars, leaves below the ear should senesce quickly after silking to reduce leaf respiration and improve the photosynthetic capacity of the remaining top residual leaves. In future maize cultivation, compact cultivars with optimal post-silking LAI should be adopted when planting densely.
6
McDaniel, L. L. "Assembly, Morphology, and Accumulation of a Hawaiian Isolate of Maize Mosaic Virus in Maize." Phytopathology 75, no. 10 (1985): 1167. http://dx.doi.org/10.1094/phyto-75-1167.
Full text
7
Liu, J. B., H. L. Yan, Y. Zhang, Y. D. Hu, and H. F. Zhang. "Effects of stale maize on growth performance, immunity, intestinal morphology and antioxidant capacity in broilers." Asian-Australasian Journal of Animal Sciences 33, no. 4 (April 1, 2020): 605–14. http://dx.doi.org/10.5713/ajas.19.0224.
Full textAbstract:
Objective: This study was conducted to determine the effects of stale maize on growth performance, immunity, intestinal morphology, and antioxidant capacity in broilers.Methods: A total of 800 one-day-old male Arbor Acres broilers (45.4±0.5 g) were blocked based on body weight, and then allocated randomly to 2 treatments with 20 cages per treatment and 20 broilers per cage in this 6-week experiment. Dietary treatments included a basal diet and diets with 100% of control maize replaced by stale maize.Results: The content of fat acidity value was higher (p<0.05) while the starch, activities of catalase and peroxidase were lower (p<0.05) than the control maize. Feeding stale maize diets reduced (p<0.05) average daily feed intake (ADFI) throughout the experiment, feed conversion ratio (FCR) during d 0 to 21 and the whole experiment as well as relative weight of liver, spleen, bursa of Fabricius and thymus (p<0.05) on d 21. Feeding stale maize diets decreased jejunum villus height (VH) and VH/crypt depth (CD) (p<0.05) on d 21 and 42 as well as ileum VH/CD on d 42. The levels of immunoglobulin G, acid α-naphthylacetate esterase positive ratios and lymphocyte proliferation on d 21 and 42 as well as lysozyme activity and avian influenza antibody H<sub>5</sub>N<sub>1</sub> titer on d 21 decreased (p<0.05) by the stale maize. Feeding stale maize diets reduced (p<0.05) serum interferon-γ, tumor necrosis factor-α, interleukin-2 on d 21 and interleukin-6 on d 21 and 42. Broilers fed stale maize diets had lower levels of (p<0.05) total antioxidative capacity on d 42, superoxide dismutase and glutathione peroxidase on d 21 and 42, but higher (p<0.05) levels of malondialdehyde on d 21 and 42.Conclusion: Feeding 100% stale maize decreased ADFI and FCR, caused adverse effects on immunity and antioxidant function and altered intestinal morphology in broilers.
8
Vescio, Rosa, Maria Rosa Abenavoli, and Agostino Sorgonà. "Single and Combined Abiotic Stress in Maize Root Morphology." Plants 10, no. 1 (December 23, 2020): 5. http://dx.doi.org/10.3390/plants10010005.
Full textAbstract:
Plants are continually exposed to multiple stresses, which co-occur in nature, and the net effects are frequently more nonadditive (i.e., synergistic or antagonistic), suggesting “unique” responses with respect to that of the individual stress. Further, plant stress responses are not uniform, showing a high spatial and temporal variability among and along the different organs. In this respect, the present work investigated the morphological responses of different root types (seminal, seminal lateral, primary and primary lateral) of maize plants exposed to single (drought and heat) and combined stress (drought + heat). Data were evaluated by a specific root image analysis system (WinRHIZO) and analyzed by uni- and multivariate statistical analyses. The results indicated that primary roots and their laterals were the types more sensitive to the single and combined stresses, while the seminal laterals specifically responded to the combined only. Further, antagonistic and synergistic effects were observed for the specific traits in the primary and their laterals and in the seminal lateral roots in response to the combined stress. These results suggested that the maize root system modified specific root types and traits to deal with different stressful environmental conditions, highlighting that the adaptation strategy to the combined stress may be different from that of the individual ones. The knowledge of “unique or shared” responses of plants to multiple stress can be utilized to develop varieties with broad-spectrum stress tolerance.
9
LUKENS, LEWIS N., and JOHN DOEBLEY. "Epistatic and environmental interactions for quantitative trait loci involved in maize evolution." Genetical Research 74, no. 3 (December 1999): 291–302. http://dx.doi.org/10.1017/s0016672399004073.
Full textAbstract:
To test for epistasis and allele-specific environmental responses among quantitative trait loci (QTL) involved in the evolution of maize from its ancestor (teosinte), teosinte alleles of two QTL previously shown to control much of the morphological difference between these plants were introgressed into an isogenic maize background. Plants of each of the four two-locus homozygous classes for the two QTL were grown in two environments. Three morphological traits and the level of mRNA accumulation for one QTL (teosinte branched1, tb1) were measured. tb1 has a large additive effect on morphology that was correlated with its message level. The second QTL had only negligible effects on morphology when isolated in an isogenic background, but exhibited a strong interaction effect on morphology in combination with tb1. This interaction is also evident in tb1 message levels, suggesting that this second QTL may act as an upstream regulator of tb1. The combined effect of the maize alleles at the two QTL makes tb1 message levels over fourfold higher. Plants homozygous for the teosinte allele at tb1 showed greater phenotypic plasticity across environments than plants homozygous for the maize allele. Our results support two hypotheses. First, maize plant architecture may have evolved by selection for a gene complex rather than the additive effects of individual loci alone. Secondly, selection during maize domestication for an allele of tb1 which lacks environmental plasticity may have led to the fixation of a morphological form that can be induced in teosinte by environmental conditions.
10
Singh, Pummi, Marc Orbach, and Peter Cotty. "Aspergillus texensis: A Novel Aflatoxin Producer with S Morphology from the United States." Toxins 10, no. 12 (December 3, 2018): 513. http://dx.doi.org/10.3390/toxins10120513.
Full textAbstract:
Aflatoxins are carcinogenic metabolites produced primarily by fungi within Aspergillus section Flavi. These fungi infect a wide range of crops in warm regions. Molecular phylogenetic analyses of fungi with S morphology (average sclerotium size < 400 µm) within section Flavi collected from across the United States (US) resulted in the discovery of a novel aflatoxin-producing species, Aspergillus texensis. Aspergillus texensis was isolated from maize grown in Arkansas, Louisiana, and Texas, and from soils cropped to maize in Texas. Aspergillus texensis produces sparse conidia and abundant sclerotia on various culture media, and on maize. Physiological studies have revealed optimal growth on culture media at 35 °C. All isolates of A. texensis produced B and G aflatoxins, cyclopiazonic acid and aspergillic acid. Aspergillus texensis and A. flavus S strain morphotypes produced similar concentrations of total aflatoxins on maize (p > 0.05). Phylogenetic analyses of aflatoxin-producers based on partial gene sequences of the β-tubulin (0.9 kb), calmodulin (1.2 kb), and nitrate reductase (2.1 kb) genes placed A. texensis in a highly supported monophyletic clade closely related to A. minisclerotigenes and a previously reported unnamed lineage designated Lethal Aflatoxicosis Fungus.
Dissertations / Theses on the topic "Maize - Morphology"
1
Traut, Eduardo Jorge. "Bipolaris zeicola: physiological races, morphology and resistance on maize." Diss., Virginia Tech, 1993. http://hdl.handle.net/10919/40449.
Full text
2
Larson, Ryan A. "Development of a Parameterized Model of Transverse Maize (Zea maysL.) Stalk Morphology." BYU ScholarsArchive, 2020. https://scholarsarchive.byu.edu/etd/8981.
Full textAbstract:
Stalk lodging, or failure of the stalk structure, presents a serious problem in the production of maize (Zea mays L.). Lodged stalks negatively impact crop yields by inhibiting further grain growth and often prevent the harvest of the grain. Addressing this problem requires the development of new maize hybrids that exhibit enhanced lodging resistance, which in turn requires an understanding of the parameters that influence lodging resistance. Current methods make use of specimen-speciï¬c geometry and material properties, but these methods have limited ability to examine geometric effects and can require excessive time. A parameterized model of the maize stalk has the potential to overcome these limitations. The purpose of this study was to develop a model of the maize stalk cross-section that could accurately predict transverse stiffness. Principal component analysis was utilized to discover underlying geometric patterns that could be used as parameters in a cross-sectional model. Using the resulting principal components, a series of approximated cross-sections was created that represented various levels of ï¬delity to real cross-section geometry. The real and approximated cross-sections were modeled in transverse compression with a prescribed deformation load, and the predictive accuracy of each approximated model was calculated. A sensitivity study was also performed to quantify the strength of individual parameter effects. The simplest model, an elliptical cross-section, accurately predicted transverse stiffness while minimizing the number of model parameters. This model may later be used as a basis for a three-dimensional parameterized model of the maize stem.
3
Costa, Carlos. "Root and canopy characteristics of maize types with extreme architectures." Thesis, McGill University, 2000. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=36898.
Full textAbstract:
Studies of corn root morphology, canopy description, light and nutrient relationships, have focused on conventional corn hybrids. We are now extending these studies to other corn types with contrasting canopy and root architectures. Field and greenhouse experiments were carried out in order to characterize root morphology, N status in the plant and its relationship with yield and yield components, canopy architecture and light interception of these genotypes. The indoor experiments investigated root morphology and how N affects it. Root fractal geometry and its relationship with standard measured root variables were investigated. The field research, at two sites and over two growing seasons, examined (i) maize canopy architecture with regard to light interception and (ii) nitrogen effects on grain yield of different maize genotypes. Four genotypic types were included: (i) Leafy reduced-stature, Lfy1rd1 (LRS), (ii) non Leafy-reduced stature, lfyrd1 (NLRS), (iii) Leafy normal stature, Lfy1Rd1 (LNS), and (iv) conventional commercial hybrids, lfy1Rd1. Pioneer 3905 served as the check hybrid for late maturity, and Pioneer 3979, the check for early maturity. The work allowed development of following methods: (i) root sampling for measurement of large root systems, (ii) staining to enhance root contrast for measurement with a scanner-based software system, (iii) sample size determination for SPAD meter readings, and (iv) the design and construction of a mobile and multi-strata device for measurement of light interception. Data were collected for mathematical characterization of canopies (i.e. leaf angle, co-ordinates of the maximum height of the leaf, co-ordinates of the leaf tip), plant N status (SPAD meter readings), light interception, yield and grain yield components. Conventional hybrids generally showed greater root length and surface area than their leafy genotypic counterparts at early developmental stages (i.e. up to 15 days from emergence). However, Leafy geno
4
Tranel, Dean Michael. "Morphology and plasticity of maize (Zea mays L.) male inflorescence development and pollen production." [Ames, Iowa : Iowa State University], 2007.
Find full text
5
Deng, Yinghai 1966. "Development and disease resistance of leafy reduced stature maize (Zea mays L.)." Thesis, McGill University, 2001. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=38177.
Full textAbstract:
Previous studies on Leafy reduced-stature (LRS) maize found that it had extremely early maturity and a higher harvest index (HI), leading to high yields for its maturity rating. Whether this apparent high HI is relaxed to its earliness, or can also exist among the medium or late maturity LRS maize has not been previously investigated. It was also of interest to know if the traits that produced the LRS canopy structure have pleiotropic effects on root architecture. Finally, field observations indicated that LRS maize had a lower incidence of common smut. It is not known whether this apparent resistance is specific to smut or includes other diseases.Using a wide range of the most recently developed LRS hybrids and some conventional hybrids, a two-year field experiment was conducted to examine the HI and disease resistance of LRS maize. HI, yield, and yield components were compared between the two genotype groups (LRS and conventional) under different population densities. The resistance to the natural incidence of common smut and artificially inoculated Gibberella ear rot was also tested. Morphology and fractal dimension analyses of roots at an early development stage were conducted in indoor experiments. These analyses were performed with WinRHIZO (version 3.9), an interactive scanner-based image analysis system.
This work showed that: (1) There was no relationship between the HI and maturity; higher HIs can also exist among the medium and late maturity LRS hybrids. (2) While LRS maize hybrids have the potential for high yield this was not realized in the LRS hybrids used in this work. Further breeding and development of optimum management practices are needed to fully exploit this potential. (3) During early development LRS hybrids generally had more branching and more complex root systems than conventional hybrids. (4) Fractal dimension, as a comprehensive estimation of root complexity, was highly related to major root morphological variables, such as root total length, surface area, branching frequency and dry mass. (5) Of the hybrids tested the greatest resistance to both common smut and Gibberella ear rot, two major ear diseases, occurred in some of the LRS types.
6
Zanin, Claitson Gustavo. "Área foliar, senescência e uniformidade de desenvolvimento na adaptação ao adensamento de plantas de cultivares de milho com bases genéticas contrastantes." Universidade do Estado de Santa Catarina, 2007. http://tede.udesc.br/handle/handle/1240.
Full textAbstract:
Made available in DSpace on 2016-12-08T16:44:53Z (GMT). No. of bitstreams: 1
PGPV07MA014.pdf: 449670 bytes, checksum: 27f987f7db78d00331b32761b47a1875 (MD5)
Previous issue date: 2007-02-16Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
The increment in plant density is an alternative to maximize solar radiation interception and to increase maize grain yield. However, it can also reduce the crop photosynthetic activity and limit its efficiency to convert carbohydrates to grain production. Increases in maize hybrid s tolerance to crowding have been reported in different production areas around the world. Two traits that may contribute to this feature are the slower leaf senescence during grain filling and the higher uniformity in plant growth and development during the crop cycle. This work was carried out aiming to quantify the effects of plant population increment on the leaf area, grain yield and the variation coefficient of agronomic traits of maize cultivars with contrasting genetic variability. The trial was set in Lages, SC, Brazil. A randomized block experimental design disposed in split-plots was used. Three cultivars were evaluated in the main plot: an open-pollinated variety (Fortuna), a double-cross hybrid (Ag 303) and a single-cross hybrid (P30F53). Five plant populations were tested in the split-plot: 25,000, 50,000, 75,000, 100,000, and 125,000 plants ha-1. The experiment was sowed on 10-26-2005, with a row spacing of 0.70 m. When the crop had four expanded leaves, 10 plants of each split-plot that were in the same growth stage were labeled. These plants were used to measure leaf area and to follow the crop growth, determining the variation coefficient of leaf area, growth stage and plant height. These variables were estimated 10 times, at the growth stages of V4, V8, V12, V16, R1 (silking) and 14, 28, 42, 56 and 70 days after silking. After harvesting, the variation coefficient and grain production per plant were determined based on the 10 selected plants. In addition to that, grain production and yield components were determined. The data were submitted to the variance analysis by the F test, at the 5.0% significance level (P<0.05). The means were compared by the Tukey s test (P<0.05), by polynomial regression and linear correlation. The response of grain yield to increment in plant population was quadratic, regardless of cultivar. Grain yield of the singlecross hybrid (SCH) was higher and more responsive to increase in plant density than grain yield of the double-cross hybrid (DCH) and the open-pollinated variety (OPV). The plant densities that optimized grain yield were 86,665 plants ha-1, 53,044 plants ha-1 and 85,000 plants ha-1 for the SCH, DCH and OPV, respectively. The SCH presented higher leaf area values than the other cultivars 56 days after silking, when plant populations greater than 50,000 plants ha-1 were used. The highest variation coefficient value for grain production per plant was registered at 125,000 plants ha-1 and the lowest at 25,000 plants ha-1. The SCH presented smaller variation coefficient than the DCH and OPV for plant height and leaf area at silking, and for grain yield per plant. The higher morphologic uniformity of the SCH probably contributed to reduce intra-specific competition for water, light and nutrients, establishing a stronger sink after flowering. The SCH greater demand for photosynthetic products possibly favored the maintenance of leaf activity for a higer period, delaying senescence. Therefore, the slower leaf senescence and the more uniform plant growth contributed to the SCH higher grain yield and to the higher productivity differences between the SCH and the other two cultivars in the highest plant densities (75,000, 100,000 e 125,000 plants ha-1)
O incremento na densidade de plantas é uma forma de maximizar a interceptação da radiação solar e o rendimento de grãos do milho. Contudo, ele também pode reduzir a atividade fotossintética da planta e a eficiência de conversão dos fotoassimilados à produção de grãos. Aumentos na tolerância de híbridos de milho ao adensamento têm sido reportados em diferentes regiões produtoras no mundo. Duas características que podem contribuir para isto são a senescência foliar mais lenta no enchimento de grãos e a maior uniformidade no crescimento e desenvolvimento das plantas durante o ciclo da cultura. Este trabalho foi conduzido com os objetivos de quantificar o efeito do incremento da população de plantas sobre a área foliar, o rendimento de grãos e o coeficiente de variação de características agronômicas de cultivares de milho com bases genéticas contrastantes. O experimento foi conduzido no município de Lages-SC. O delineamento experimental utilizado foi o de blocos casualizados dispostos em parcelas subdivididas. Na parcela principal foram testadas três cultivares de milho: uma variedade de polinização aberta (Fortuna), um híbrido duplo (Ag303) e um híbrido simples (P30F53). Cinco populações de plantas foram avaliadas nas subparcelas: 25.000, 50.000, 75.000, 100.000 e 125.000 plantas ha-1. O experimento foi implantado no dia 26 de outubro de 2005, com espaçamento entre linhas de 0,70 m. Quando a cultura estava com quatro folhas expandidas, marcou-se 10 plantas de cada subparcela que estivessem no mesmo estádio fenológico. Estas plantas foram utilizadas para as avaliações de área foliar, bem como para o acompanhamento do crescimento, determinando-se o coeficiente de variação para área foliar, estádio fenológico e estatura de planta. Estas variáveis foram avaliadas 10 vezes, nos estádios V4, V8, V12, V16, R1 (espigamento) e aos 14, 28, 42, 56 e 70 dias após o espigamento. Após a colheita, foram determinados o coeficiente de variação e a produção de grãos por planta, nas 10 plantas selecionadas. Além disso, determinou-se a produção de grãos na área útil, bem como os componentes do rendimento. Os dados foram submetidos à análise de variância pelo teste F, ao nível de significância de 5% (P<0,05). As médias foram analisadas pelo teste de Tukey, a 5% de probabilidade de erro (P<0,05), por regressão polinomial e por correlação linear. A reposta do rendimento de grãos das três cultivares ao incremento na densidade de plantas foi quadrática. O rendimento de grãos do híbrido simples (HS) foi maior e mais responsivo ao incremento na população de plantas do que o híbrido duplo (HD) e da variedade de polinização aberta (VPA). As populações que otimizaram o rendimento de grãos foram de 86.665 plantas ha-1, 53.044 plantas ha-1 e 85.000 plantas ha-1 para o HS, HD e VPA, respectivamente. O HS apresentou maior valor de área foliar do que as demais cultivares aos 56 dias após o espigamento, nas densidades superiores a 50.000 plantas ha-1. Os maiores coeficientes de variação para produção de grãos por planta foram obtidos na densidade de 125.000 plantas ha-1 e os menores na de 25.000 plantas ha-1. O HS apresentou menor coeficiente de variação do que o HD e a VPA para estatura de planta e área foliar no espigamento, bem como para produção de grãos por planta. As maiores uniformidades morfológica e fenológica do HS provavelmente contribuiu para reduzir a competição intra-específica por água, luz e nutrientes, favorecendo o estabelecimento de um dreno mais forte logo após a floração. A maior demanda por fotoassimilados do HS possivelmente favoreceu a manutenção da atividade fotossintética das folhas por um período mais longo, retardando a senescência foliar. Portanto, a senescência foliar mais lenta e o desenvolvimento uniforme das plantas contribuíram para o maior rendimento de grãos do HS e para as maiores diferenças de produtividade registradas entre o HS e o HD e a VPA nas densidades mais altas (75.000, 100.000 e 125.000 plantas ha-1)
7
Guelpa, Anina. "Maize endosperm texture characterisation using the rapid visco analyser (RVA), X-ray micro-computed tomography (μCT) and micro-near infrared (microNIR) spectroscopy." Thesis, Stellenbosch : Stellenbosch University, 2015. http://hdl.handle.net/10019.1/96967.
Full textAbstract:
Thesis (PhD (Food Sc))--Stellenbosch University, 2015.ENGLISH ABSTRACT: Maize kernels consists of two types of endosperm, a harder vitreous endosperm and a softer floury endosperm, and the ratio of the vitreous and floury endosperm present mainly determines the hardness of the kernel. Maize (Zea mays L.) is a staple food in many countries, including South Africa, and is industrially processed into maize meal using dry-milling. For optimal yield and higher quality products, hard kernels are favoured by the milling industry. Despite many maize hardness methods available, a standardised method is still lacking, furthermore, no dedicated maize milling quality method exists. Using an industrial guideline (chop percentage), a sample set of different maize hybrids was ranked based on milling performance. Unsupervised inspection (using principal component analysis (PCA) and Spearman’s rank correlation coefficients) identified seven conventional methods (hectoliter mass (HLM), hundred kernel mass (HKM), protein content, particle size index (PSI c/f), percentage vitreous endosperm (%VE) as determined using near infrared (NIR) hyperspectral imaging (HSI) and NIR absorbance at 2230 nm (NIR @ 2230 nm)) as being important descriptors of maize milling quality. Additionally, Rapid Visco Analyser (RVA) viscograms were used for building prediction models, using locally weighted partial least squares (LW-PLS). Hardness properties were predicted in the same order or better than the laboratory error of the reference method, irrespective of RVA profile being used. Classification of hard and soft maize hybrids was achieved, based on density measurements as determined using an X-ray micro-computed tomography (µCT) density calibration constructed from polymers with known densities. Receiver operating classification (ROC) curve threshold values of 1.48 g.cm-3 , 1.67 g.cm-3 and 1.30 g.cm-3 were determined for the entire kernel (EKD), vitreous (VED) and floury endosperm densities (FED), respectively at a maximum of 100% sensitivity and specificity. Classification based on milling quality of maize hybrids, using X-ray µCT derived density and volume measurements obtained from low resolution (80 µm) µCT scans, were achieved with good classification accuracies. For EKD and vitreous-to-floury endosperm ratio (V:F) measurements, 93% and 92% accurate classifications were respectively obtained, using ROC curve. Furthermore, it was established that milling quality could not be described without the inclusion of density measurements (using PCA and Spearman’s rank correlation coefficients). X-ray µCT derived density measurements (EKD) were used as reference values to build NIR spectroscopy prediction models. NIR spectra were acquired using a miniature NIR spectrophotometer, i.e. a microNIR with a wavelength range of 908 – 1680 nm. Prediction statistics for EKD for the larger sample set (where each kernel was scanned both germ-up and germ-down) was: R2 V = 0.60, RMSEP = 0.03 g.cm-3 , RPD = 1.67 and for the smaller sample set (where each kernel was scanned only germ-down): R2 V = 0.32, RMSEP = 0.03 g.cm-3 , RPD = 1.67. The results from the larger sample set indicated that reasonable predictions can be made at the fast NIR scan rate that would be suitable for breeders as a rough screening method.
AFRIKAANSE OPSOMMING: Mieliepitte bestaan uit twee tipes endosperm, ‘n harder glasagtige endosperm en ‘n sagter melerige endosperm, en die verhouding waarin die twee tipes endosperm aangetref word, bepaal hoofsaaklik die hardheid van die pit. Mielies (Zea mays L.) is ‘n stapelvoedsel in baie lande, insluitende Suid-Afrika, en word industrieël geprosesseer na mieliemeel deur van droë-vermaling gebruik te maak. Vir optimale produksie en beter kwaliteit produkte, word harde pitte deur die meule verkies. Ongeag die beskikbaarheid van verskeie mielie hardheid metodes, ontbreek ‘n gestandardiseerde metode nog, en verder bestaan ‘n metode om mielies se maalprestasie te bepaal ook nie. ‘n Monsterstel, bestaande uit verskillende mieliebasters, is op grond van maalprestasie ingedeel deur van ‘n industriële riglyn (chop persentasie) gebruik te maak. Inspeksie sonder toesig (deur gebruik te maak van hoofkomponentanalise (HKA) en Spearman’s rangkorrelasiekoëffisiënte) het sewe onkonvensionele metodes (hektoliter massa, honderd pit massa, protein inhoud, partikel grootte indeks, persentasie glasagtige endosperm soos bepaal deur gebruik te maak van naby-infrarooi (NIR) hiperspektrale beelding en NIR absorbansie by 2230 nm) identifiseer as belangrike beskrywers van maalprestasie. Daarbenewens, is Rapid Visco Analyser (RVA) viskogramme gebruik om voorspellingsmodelle te bou deur gebruik te maak van plaaslik geweegte gedeeltelike kleinstekwadrate (PG-GKK) wat hardheidseienskappe kon voorspel met laer, of in dieselfde orde, laboratorium foute van die verwysingsmetodes, ongeag die gebruik van verskillende RVA profiele. Klassifikasie tussen harde en sagte mieliebasters was moontlik, gebasseer op digtheidsmetings soos bepaal met ‘n X-staal mikro-berekende tomografie (µBT) digtheids kalibrasie gebou vanaf polimere met bekende digthede. Ontvanger bedryf kenmerkende (OBK) kurwe drempelwaardes van 1.48 g.cm-3 , 1.67 g.cm-3 en 1.30 g.cm-3 is bepaal vir hele pit, glasagtige en melerige endosperm digthede, onderskeidelik, teen ‘n maksimum van 100% sensitiwiteit en spesifisiteit. Klassifikasie van die mieliebasters, gebasseer op maalprestasie en deur gebruik te maak van X-straal µBT afgeleide digtheid en volume metings soos verkry teen lae resolusie (80 µm) skanderings, was moontlik met goeie klassifikasie akkuraatheid. Vir heel pit digtheid en glasagtigtot-melerige endosperm verhouding metings is 93% en 92% akkurate klassifikasies verkry wanneer OBK kurwes gebruik is. Verder is dit vasgestel (deur gebruik te maak van HKA en Spearman’s rangkorrelasiekoëffisiënte) dat digtheidsmetings ingesluit moet word vir ‘n volledige beskrywing van maalprestasie. X-straal µBT afgeleide digtheid metings is gebruik as verwysings waardes om NIR spektroskopie voorspellings modelle te bou. NIR spektra is verkry deur van ‘n miniatuur NIR spektrofotometer, naamlik ‘n microNIR, bebruik te maak vanaf 908 – 1680 nm. Voorspellings statestiek vir die groter monsterstel (waar elke pit beide kiem-bo en kiem-onder geskandeer is) was vir HPD: R2 V = 0.60, RMSEP = 0.03 g.cm-3 , RPD = 1.67 en vir die kleiner monsterstel (waar elke pit was slegs kiem-onder geskandeer is) vir HPD: R2 V = 0.32, RMSEP = 0.03 g.cm-3 , RPD = 1.67. Die resultate van die groter monsterstel het aangedui dat redelike voorspellings moontlik is, teen die vinnige NIR skaderings tempo wat as rowwe vertoningsmetode geskik sal wees vir telers.
8
Longstaff, Muriel Tahiameiani. "Diversity in Tiller Suppression of Domesticated Cereals: MorphologicalVariance Observed in Maize, Sorghum, and Setaria." BYU ScholarsArchive, 2018. https://scholarsarchive.byu.edu/etd/7432.
Full textAbstract:
Tillers are vegetative branches found in grasses, which develop in early stages of plant life. Located at the base of the central stalk, tillers have agronomical importance by increasing seed production with fewer tillers, or providing alternative forms of biofuel with more tillers. As grains have typically decreased tiller number while undergoing domestication, we explored wild and domesticated strains of varying grains by doing a morphological analysis on tiller development. This thesis shows how the decrease of tillers through in domestication cereals shows diversity not only across maize, Sorghum, and Setaria, but also between lines of maize and Setaria species. To do so, we first measured axillary bud growth across these grasses and compared bud initiation, growth, dormancy and outgrowth. While maize inbred B73 demonstrated a tiller dormancy pattern by initiating buds, growing buds and then bud dormancy we measured growth in Sorghum and Setaria to compare and found that although Sorghum patterns dormancy similar to maize, Setaria had more than one way tiller suppression not previously expected. We look further at Setaria buds with a statistical analysis of tiller origin and bud frequency in a wild strain and two domesticated strains of Setaria. Furthermore we performed Scanning Electron Microscopy (SEM) to have a clear understanding of bud initiation or lack of initiation in Setaria italica (B100) comparing it to its wild ancestor Setaria viridis. Because of the diversity in Setaria, we re-visited maize tiller domestication by taking bud measurements, performing SEMs and counting bud frequency on other strains of inbred maize. We found that maize also shows diversity in its patterning of tiller domestication. These results demonstrate that there is diversity in the patterns in which tiller domestication has occurred. This diversity is shown here through differences in tiller bud decisions to initiate or not initiate, or to have axillary buds go dormant post-initiation. Furthermore this variance is shown through differences in bud frequency counts, growth measurements, SEMs, and where tiller branches originate across the grains of maize, Sorghum and Setaria.
9
Van, Emmenes Liesel. "Evaluation of phytase enzymes on performance, bone mineralisation, carcass characteristics and small intestinal morphology of broilers fed maize soya bean diets." Thesis, Stellenbosch : Stellenbosch University, 2014. http://hdl.handle.net/10019.1/86691.
Full textAbstract:
Thesis (MScAgric)--Stellenbosch University, 2014.ENGLISH ABSTRACT: The use of phytase enzymes to liberate phosphorus and other phytate bound nutrients in monogastric animal diets are becoming common practice and several commercial phytase enzymes are available on the market. Phytase manufacturers supply nutritionists with matrix values for the specific phytase, enabling nutritionists to effectively decrease the dietary concentrations of phosphorus and nutrients during diet formulation. A 32 day experiment was conducted with 5120 broiler chicks fed diets supplemented with different commercial phytase enzymes (1000 FYT or 1500 FYT HiPhos/kg diet, 1500 FYT Ronozyme/kg diet, 500 FTU Natuphos/kg diet or 500 FTU Phyzyme/kg diet) at levels recommended by the manufacturers and with similar phosphorus equivalence. The nutrient content of the diets supplemented with 500 FTU Natuphos, 500 FTU Phyzyme 1500 Ronozyme and 1000 FYT HiPhos were reduced according to the matrix values of 1000 FYT/kg HiPhos, whilst the diet supplemented with 1500 FYT HiPhos /kg diet was reduced according to the matrix values 1500 FYT HiPhos. The objectives of this study were threefold: (i) to confirm the matrix value for a newly developed phytase (HiPhos, DSM Nutritional Products, Basel, Switzerland), at two different inclusion levels, using weight gain and bone parameters of broilers as response criteria; (ii) to compare production and bone parameters of broilers reared on three different commercial phytases to broilers reared on HiPhos (iii) to investigate the effect that supplementation of these four phytases has on water intake, carcass characteristics, organ weights and gastrointestinal tract morphology of broilers. The matrix values for 1500 FYT HiPhos were confirmed by using live weight gain as response criteria, but results for bone parameters were insufficient in confirming the matrix values. The matrix values for 1000 FYT HiPhos were confirmed by the results for tibia weight and tibia strength, but results for weight gain were insufficient to confirm the values. The matrix values for 1000 FYT HiPhos and 1500 FYT HiPhos could not be confirmed nor disproved, nevertheless results from the current trial proved diets supplemented with HiPhos to be more economically viable when compared to the standard commercial broiler diet. Total feed and water intake were not influenced by phytase supplementation. Production parameters (live weight, feed intake, feed conversion ratio, European production efficiency factor and average daily gain) and bone parameters (tibia strength, fat free tibia weight, fat free tibia ash and mineral content) did not differ between phytase treatments and therefore all the commercial phytases were equally effective to the HiPhos phytase. Furthermore, results indicate that the investigated phytases had no effect on internal organ weight or gastrointestinal tract morphology in broilers. Overall the results obtained from the study indicate that the use of phytase as feed additive has no negative effects on growth performance, carcass characteristics or bone parameters. No major differences for the production and bone parameters were observed between broilers supplemented with different phytases. Therefore the costs of these phytases can be the determining factor when nutritionists decide which commercial phytase to use.
AFRIKAANSE OPSOMMING: Die gebruik van fitase ensieme in die diëte van enkelmaagdiere om fitaat-gebonde fosfor en voedingstowwe vry te stel, word al hoe meer algemeen in die bedryf en verskeie kommersiële fitase ensieme is in die mark beskikbaar. Die ensiemvervaardigers verskaf die fitases se matryswaardes aan voedingskundiges wat hul in staat stel om die fosfor- en nutrientvlakke in die dieet effektief te verminder. ´n Studie met 5120 braaikuikens was vir 32 dae uitgevoer. Die braaikuiken diëte was met verskillende kommersiële fitase ensieme (1000 FYT & 1500 FYT HiPhos/kg dieet, 1500 FYT Ronozyme/kg dieet, 500 FTU Natuphos/kg dieet of 500 FTU Phyzyme/kg dieet) aangevul. Die nutrientvlakke van die diëte wat met fitase aangevul was, was verminder volgens die matryswaardes van 1000 FYT of 1500 FYT HiPhos fitase. Die doelstellings van hierdie studie was drievoudig: (i) om die matryswaardes van ´n nuwe fitase (HiPhos, DSM Nutritional Products, Basel, Switzerland) by twee verskillende insluitingsvlakke te bevestig deur massa toename en been parameters as reaksie maatstawwe te gebruik (ii) om produksie- en been parameters van braaikuikens, wat een van drie kommersiële fitase ensieme as voerbymiddel ontvang het, met dié van braaikuikens wat die nuwe ensiem gevoer was te vergelyk (iii) om die effek wat fitase op water inname, karkaseienskappe, orgaan massas en spysverteringskanaal morfologie het te bestudeer. Die matryswaardes vir 1500 FYT HiPhos was bevestig deur lewendige massa toename as respons kriteria te gebruik, maar resultate vir die been parameters was onvoldoende om die matryswaardes te bevestig. Die matryswaardes vir 1000 FYT HiPhos was slegs bevestig deur die resultate vir die breeksterktes van die tibias, maar resultate vir massa toename was onvoldoende om die matryswaardes te bevestig. Dus kon die matryswaardes vir die HiPhos fitase nie bevestig of verkeerd bewys word nie. Desondanks het die resultate in die huidige proef bewys dat diëte wat met HiPhos aangevul was meer ekonomies as die kommersiële braaikuiken dieet is. Totale voer- en water-inname was nie deur die aanvulling van fitase beïnvloed nie. Produksie parameters (lewendige massa, voeromset, die Europese produksie doeltreffendheids faktor, gemiddelde daaglikse toename) en been parameters (tibia breeksterkte, vet vrye tibia massa, vet vrye tibia as en mineraal-inhoud) het nie verskil tussen die fitase behandelings nie en dus was al die kommersiële fitases ewe effektief. Vanuit die studie is getoon dat die gebruik van fitase as ´n voerbymiddels geen negatiewe effek op groei, karkas eienskappe of been parameters het nie en dat fitase ook nie die orgaan gewigte of die spysverteringskanaal morfologie van braaikuikens beïnvloed nie. Geen groot verskille in produksieen been parameters was waargeneem tussen hoenders wat verskillende fitases as voerbymiddel ontvang het nie, daarom kan die koste van die ensiem die bepalende faktor wees as voedingkundiges die keuse maak tussen hierdie kommersiele fitases.
10
Trachsel, Samuel. "Genetic analysis of root morphology and growth of tropical maize and their role in tolerance to desiccation, aluminum toxicity and high temperature /." [S.l.] : [s.n.], 2009. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=18243.
Full textBooks on the topic "Maize - Morphology"
1
Goligorsky, Michael S., Julien Maizel, Radovan Vasko, May M. Rabadi, and Brian B. Ratliff. Pathophysiology of acute kidney injury. Edited by Norbert Lameire. Oxford University Press, 2015. http://dx.doi.org/10.1093/med/9780199592548.003.0221.
Full textAbstract:
In the intricate maze of proposed mechanisms, modifiers, modulators, and sensitizers for acute kidney injury (AKI) and diverse causes inducing it, this chapter focuses on several common and undisputable strands which do exist.Structurally, the loss of the brush border, desquamation of tubular epithelial cells, and obstruction of the tubular lumen are commonly observed, albeit to various degrees. These morphologic hallmarks of AKI are accompanied by functional defects, most consistently reflected in the decreased glomerular filtration rate and variable degree of reduction in renal blood flow, accompanied by changes in the microcirculation. Although all renal resident cells participate in AKI, the brunt falls on the epithelial and endothelial cells, the fact that underlies the development of tubular epithelial and vascular compromise.This chapter further summarizes the involvement of several cell organelles in AKI: mitochondrial involvement in perturbed energy metabolism, lysosomal involvement in degradation of misfolded proteins and damaged organelles, and peroxisomal involvement in the regulation of oxidative stress and metabolism, all of which become defective. Common molecular pathways are engaged in cellular stress response and their roles in cell death or survival. The diverse families of nephrotoxic medications and the respective mechanisms they induce AKI are discussed. The mechanisms of action of some nephrotoxins are analysed, and also of the preventive therapies of ischaemic or pharmacologic pre-conditioning.An emerging concept of the systemic inflammatory response triggered by AKI, which can potentially aggravate the local injury or tend to facilitate the repair of the kidney, is presented. Rational therapeutic strategies should be based on these well-established pathophysiological hallmarks of AKI.
Book chapters on the topic "Maize - Morphology"
1
Cheng, Ping-Chin, and Dayakar R. Pareddy. "Morphology and Development of the Tassel and Ear." In The Maize Handbook, 37–47. New York, NY: Springer New York, 1994. http://dx.doi.org/10.1007/978-1-4612-2694-9_5.
Full text
2
Badu-Apraku, Baffour, and M. A. B. Fakorede. "Morphology and Physiology of Maize." In Advances in Genetic Enhancement of Early and Extra-Early Maize for Sub-Saharan Africa, 33–53. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-64852-1_3.
Full text
3
Hochholdinger, Frank. "The Maize Root System: Morphology, Anatomy, and Genetics." In Handbook of Maize: Its Biology, 145–60. New York, NY: Springer New York, 2009. http://dx.doi.org/10.1007/978-0-387-79418-1_8.
Full text
4
Didenko, S. Y., O. V. Golik, and V. V. Pozdniakov. "12. Influence of gamma radiation on maize (Zea mays) starch granules morphology." In Mutagenesis: exploring novel genes and pathways, 239–50. The Netherlands: Wageningen Academic Publishers, 2014. http://dx.doi.org/10.3920/978-90-8686-787-5_12.
Full text
5
Thoms, K., and B. Sattelmacher. "Influence of nitrate placement on morphology and physiology of maize (Zea mays) root systems." In Plant Nutrition — Physiology and Applications, 29–32. Dordrecht: Springer Netherlands, 1990. http://dx.doi.org/10.1007/978-94-009-0585-6_5.
Full text
6
Liao, Changmin, Daowen He, and Xiaohong Liu. "Descriptive Statistics and Correlation Analysis of Three Kernel Morphology Traits in a Maize Recombinant Inbred Line Population." In Lecture Notes in Electrical Engineering, 803–9. Dordrecht: Springer Netherlands, 2013. http://dx.doi.org/10.1007/978-94-007-7618-0_78.
Full text
7
Schwegler, H., and H. P. Lipp. "Variations in the Morphology of the Septo-Hippocampal Complex and Maze Learning in Rodents: Correlation between Morphology and Behaviour." In Behavioural Brain Research in Naturalistic and Semi-Naturalistic Settings, 259–76. Dordrecht: Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-011-0091-5_14.
Full text
8
SATTELMACHER, B., and K. THOMS. "Morphology of Maize Root Systems Influenced by a Local Supply of Nitrate or Ammonia." In Plant Roots and their Environment, 149–56. Elsevier, 1991. http://dx.doi.org/10.1016/b978-0-444-89104-4.50025-6.
Full textConference papers on the topic "Maize - Morphology"
1
Sher, Alam, Liang He, Shihua Zhang, Jincai Li, and Youhong Song. "Analysis and characterisation of interplant competition on maize canopy morphology for modelling." In 2016 IEEE International Conference on Functional-Structural Plant Growth Modeling, Simulation, Visualization and Applications (FSPMA). IEEE, 2016. http://dx.doi.org/10.1109/fspma.2016.7818306.
Full text
2
Zhang, Hao, Fuping Zeng, Qiujin Tan, and Guanghua Xu. "Crop biomass and root morphology in maize/soybean strip intercropping system in karst region." In 2015 3rd International Conference on Advances in Energy and Environmental Science. Paris, France: Atlantis Press, 2015. http://dx.doi.org/10.2991/icaees-15.2015.101.
Full text
3
Савостин, Игорь, Igor' Savostin, Андрей Трубаков, and Andrey Trubakov. "The Combination of Morphological and Evolutionary Algorithms for Graph-based Pathfinding on Maps with Complex Topologies." In 29th International Conference on Computer Graphics, Image Processing and Computer Vision, Visualization Systems and the Virtual Environment GraphiCon'2019. Bryansk State Technical University, 2019. http://dx.doi.org/10.30987/graphicon-2019-2-300-303.
Full textAbstract:
One of the difficult problems to solve has always been and still remains the problem of finding a path either in a graphic chart or a graphic maze of large size. The main problem is that traditional algorithms require a lot of time due to combinatorial complexity. At the same time, both classical algorithms based on the search of variants (such as Dijkstra's algorithm, A*, ARA*, D* lite), and stochastic algorithms (ant algorithm, genetic), alongside with algorithms based on morphology (wave) are not always able to achieve the goal. The article proposes a new modification of the path-finding algorithm, which is a hybrid of the following: the morphological operations on graphic chart approach and genetic algorithm having a useful property of elasticity in time. The experiments (both synthetic and real data) have shown the feasibility of the proposed idea and its comparison with the most commonly used algorithms of contemporaneity.
4
Zahadat, Payam, Daniel Nicolas Hofstadler, and Thomas Schmickl. "Development of morphology based on resource distribution: Finding the shortest path in a maze by vascular morphogenesis controller." In Proceedings of the 14th European Conference on Artificial Life ECAL 2017. Cambridge, MA: MIT Press, 2017. http://dx.doi.org/10.7551/ecal_a_071.
Full text
5
Ward, L., Z. McAvoy, G. Masetti, and R. Morrison. "HIGH RESOLUTION MAPPING OF MORPHOLOGIC FEATURES AND SEAFLOOR SEDIMENTS OF THE NEW HAMPSHIRE AND VICINITY CONTINENTAL SHELF, WESTERN GULF OF MAINE." In 54th Annual GSA Northeastern Section Meeting - 2019. Geological Society of America, 2019. http://dx.doi.org/10.1130/abs/2019ne-328549.
Full text