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Journal articles on the topic 'Inflorescence of sunflower'

Author: Grafiati

Published: 28 May 2022

Last updated: 31 July 2025

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1

Gavrilova, V. A., T. G. Stupnikova, M. V. Isaeva, and L. G. Makarova. "Lines of ornamental sunflower from the genetic collection of VIR." Oil Crops 1, no. 201 (2025): 29–40. https://doi.org/10.25230/2412-608x-2025-1-201-29-40.

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Ornamental sunflower is used for cutting and sale in flower shops, for landscaping of cities and towns, and very intensively by amateur gardeners. On the Rus-sian market there were mainly sunflower seeds and plants (in flower shops) produced in Holland or Poland. In the State Register there were 21 domestic varieties of ornamental sunflower, which is obviously not enough for our country. Phenotypic uniformity of 27 ornamental samples from the VIR collection of 62 samples was confirmed as a result of a three-year study. New lines, which do not split by the studied traits during three years, wer

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Nascimento, Ângela Maria Pereira, Simone Novaes Reis, Fernanda Carlota Nery, Iara Cristina Santos Curvelo, Tainá Da Cruz Taques, and Elka Fabiana Aparecida Almeida. "Influência de telas fotoconversoras no desenvolvimento de girassol ornamental." Ornamental Horticulture 22, no. 1 (2016): 101. http://dx.doi.org/10.14295/oh.v22i1.755.

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One of the many functions of sunflower (Helianthus annuus L.) is related to the use of its inflorescences in the flower market, which has guaranteed space for this species in floriculture in recent years. Sunflower has been highlighted as an ornamental plant for cutting. Studies have been performed aimed at reducing the size of this species, in order to improve its commercial production, which facilitates the production in field and in protected environments. The use of color shading nets can lead to growth manipulation and to the development of this species. The objective of this study was to

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3

Sanogo, S., B. F. Etarock, S. Angadi, and L. M. Lauriault. "Head Rot of Sunflower Caused by Rhizopus oryzae in New Mexico." Plant Disease 94, no. 5 (2010): 638. http://dx.doi.org/10.1094/pdis-94-5-0638c.

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Head rot was found in cultivated sunflower (Helianthus annuus) in eastern New Mexico in Tucumcari in 2007 and Clovis in 2007 and 2009 and in south-central New Mexico near Las Cruces in 2009. The disease was also observed in wild sunflower near Clovis in 2008. Disease incidence was 10 to 40% in cultivated sunflower and ~30% in wild sunflower. Heads were brown to dark brown with discoloration extending down the sepals and peduncles into the stems. The basal parts of the heads were shredded and had grayish, fluffy mycelial mats visible in the lumen, and kernels were mostly seedless. Three to five

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4

Jocković, Jelena, Nada Grahovac, Željko Milovac, et al. "Exploring Helianthus Species for Resilience to Drought During the Critical Reproductive Stage." Plants 14, no. 4 (2025): 631. https://doi.org/10.3390/plants14040631.

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Drought stress during the reproductive phase of sunflower can significantly reduce achene yield by affecting inflorescence size, nectar quality, and pollinator activity. This study aimed to analyze the morphological characteristics of the reproductive region, quantify nectar sugar components, and evaluate pollinator presence and pollination success in wild Helianthus species as an important genetic resource for breeding cultivated sunflowers under drought conditions. Morphological investigations were conducted during the flowering and achene development phases with a stereo microscope and cali

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5

Urdangarín, María Carina, Natalia Sigrid Norero, Willem F. Broekaert, and Laura de la Canal. "A defensin gene expressed in sunflower inflorescence." Plant Physiology and Biochemistry 38, no. 3 (2000): 253–58. http://dx.doi.org/10.1016/s0981-9428(00)00737-3.

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6

Arnold, Michael A., Bruce J. Lesikar, Garry V. McDonald, Donita L. Bryan, and Amit Gross. "Irrigating Landscape Bedding Plants and Cut Flowers With Recycled Nursery Runoff and Constructed Wetland Treated Water." Journal of Environmental Horticulture 21, no. 2 (2003): 89–98. http://dx.doi.org/10.24266/0738-2898-21.2.89.

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Abstract Direct nursery runoff (runoff), wetland treated recycled nursery runoff (recycled), and a municipal water source (tap) with and without elevated salt (NaCl targeted injection to 3.0 dS·m−1) levels were tested as potential drip irrigation sources for production of in-ground cut flower crops and landscape bedding plants. Two species of cut flowers, Helianthus annuus L. ‘Mammoth’ (sunflower) and Gladiolus hortulanus L. ‘Tout A Toi’ (gladiolus), and two bedding plants, Catharanthus roseus G. Don ‘Pacifica Red’ (vinca) and Zinnia elegans N.J. von Jacquin ‘Lilliput Mixed Colors’ (zinnia), w

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7

Shulga, O. A., A. V. Shchennikova, G. C. Angenent, and K. G. Skryabin. "MADS-box genes controlling inflorescence morphogenesis in sunflower." Russian Journal of Developmental Biology 39, no. 1 (2008): 2–5. http://dx.doi.org/10.1134/s1062360408010025.

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8

Silva, Ananda Covre da, Helio Fernandes Ibanhes Neto, Ricardo Tadeu de Faria, and Lúcia Sadayo Assari Takahashi. "Acetylsalicylic acid increases postharvest longevity of ornamental sunflower inflorescence." Semina: Ciências Agrárias 42, no. 3Supl1 (2021): 1411–20. http://dx.doi.org/10.5433/1679-0359.2021v42n3supl1p1411.

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Sunflower to be used in ornamental floral arrangements need to be free from damage, and have longer shelf life. The aim of the present study was to evaluate the effect of acetylsalicylic acid (ASA) on the postharvest longevity of ornamental sunflower. Floral stems of the cultivar Vicent’s Choice from Sakata Seed were placed in flasks containing 350 mL of solution containing 0, 200, 400, 600, 800, or 1000 mg of ASA per liter of distilled water. Aspirin® (acetylsalicylic acid) tablets were used as the source of salicylic acid. Grades from 0 to 5 were assigned every day, according to a pre-establ

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9

Peretyagina, T. M., Yu V. Chebanova, Ya N. Demurin, T. A. Zemtseva, and A. V. Epishkina. "The hybrid of the ornamental sunflower Sirius bred in the V.S. Pustovoit All-Russian Research Institute of Oil Crops." Oil Crops 2, no. 194 (2023): 116–17. http://dx.doi.org/10.25230/2412-608x-2023-2-194-116-117.

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The hybrid of the ornamental sunflower Sirius was obtained as a result of crossing two parent lines LD10 (variety of the ornamental sunflower Zhemchuzhny) and LD20. The main ornamental features of the hybrid Sirius are the original inflorescence, the light-yellow color of the ray flowers, the purple color of the tubular flowers, and the compact habitus. The hybrid belongs to the middle maturing group. The originator of the ornamental sunflower hybrid Sirius is the V.S. Pustovoit All-Russian Research Institute of Oil Crops (VNIIMK).

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10

Whipker, Brian E., and Shravan Dasoju. "Pot Sunflower Growth and Flowering Responses to Foliar Applications of Daminozide, Paclobutrazol, and Uniconazole." HortScience 32, no. 3 (1997): 438D—438. http://dx.doi.org/10.21273/hortsci.32.3.438d.

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Plant growth retardant (PGR) foliar spray treatments (mg•liter–1) of daminozide at 1000 to 16,000; paclobutrazol from 5 to 80; and uniconazole from 2 to 32 were applied to `Pacino' pot sunflowers (Helianthus annuus) to compare their effectiveness at chemical height control. When the first inflorescence opened, the number of days from seeding until flowering, total plant height measured from the pot rim to the top of the inflorescence, inflorescence diameter, and plant diameter were recorded. Total plant height, plant diameter, inflorescence diameter, and days until flowering were significant f

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11

Whipker, Brian E., and Shravan Dasoju. "Potted Sunflower Growth and Flowering Responses to Foliar Applications of Daminozide, Paclobutrazol, and Uniconazole." HortTechnology 8, no. 1 (1998): 86–88. http://dx.doi.org/10.21273/horttech.8.1.86.

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Plant growth retardant (PGR) foliar sprays (in mg·L−1) of daminozide at concentrations from 1,000 to 16,000; paclobutrazol from 5 to 80; and uniconazole from 2 to 32 were applied to `Pacino' potted sunflowers (Helianthus annuus L.) to compare their effectiveness at chemical height control. Plants were grown in 650-mL or 1.2-L pots. When the first inflorescence started to shed pollen, number of days from seeding until anthesis, total plant height measured from the pot rim to the top of the inflorescence, inflorescence diameter, and plant diameter were recorded. There was no significant differen

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12

Sharma, Basudha. "An analyses of flavonoids present in the inflorescence of sunflower." Brazilian Journal of Botany 42, no. 3 (2019): 421–29. http://dx.doi.org/10.1007/s40415-019-00552-z.

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13

Mazur, Viktor, and Oleh Kolisnyk. "INFLUENCE OF TECHNOLOGICAL APPROACHES OF GROWING ON SUNFLOWER SEED PRODUCTIVITY." Agriculture and Forestry, no. 4 (December 24, 2021): 5–15. http://dx.doi.org/10.37128/2707-5826-2021-4-1.

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The article covers an experimental field study of scientific issues - increasing the yield of sunflower seeds by optimizing the basic elements of cultivation technology. The research was carried out in the period 2020-2021 in the research field of VNAU on the basis of NDG "Agronomichnenske", which is located in the village of Agronomichne Vinnytsia region. Two hybrids of early-ripening sunflower maturity Integral and Slavson were studied in the studies of row spacing and sowing density. To achieve this goal used field, laboratory, statistical and computational methods. The quality of the harve

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14

Riccucci, Ettore, Cosimo Vanni, Alberto Vangelisti, et al. "Genome-Wide Analysis of WOX Multigene Family in Sunflower (Helianthus annuus L.)." International Journal of Molecular Sciences 24, no. 4 (2023): 3352. http://dx.doi.org/10.3390/ijms24043352.

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The WUSCHEL-related homeobox (WOX) is a family of specific transcription factors involved in plant development and response to stress, characterized by the presence of a homeodomain. This study represents the first comprehensive characterization of the WOX family in a member of the Asteraceae family, the sunflower (H. annuus L.). Overall, we identified 18 putative HaWOX genes divided by phylogenetic analysis in three major clades (i.e., ancient, intermediate, and WUS). These genes showed conserved structural and functional motifs. Moreover, HaWOX has homogeneously distributed on H. annuus chro

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15

Usatov, A. V., M. S. Makarenko, A. A. Kovalevich, and A. М. Gubaidullina. "THE ROLE OF PLASTID GENES IN A HETEROSIS EFFECT AND THE FORMATION OF MORPHOPHYSIOLOGICAL TRAITS IN SUNFLOWER PLANTS." Proceedings on applied botany, genetics and breeding 180, no. 4 (2020): 113–20. http://dx.doi.org/10.30901/2227-8834-2019-4-113-120.

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Background. The problem of nucleus-plastid interactions is obviously of theoretical and practical importance. However, the lack of knowledge in this area of plant research is, for the most part, caused by difficulties in isolating the contribution of the plastome to the formation of complex morphophysiological traits from the total genotypic variability. The current study employed a convenient model for studying the fundamental problem of interaction between the nucleus and plastid genomes.Materials and methods. The genetic model incorporated chlorophylldeficient sunflower mutant lines with ex

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16

Santos, Samanda Costa, Amaralina Celoto Guerrero, Adriana Silva Lima, et al. "Growth and Production of Cultivars Ornamental Sunflower Irrigated With Water of Different Salinities." Journal of Agricultural Science 10, no. 10 (2018): 378. http://dx.doi.org/10.5539/jas.v10n10p378.

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The sunflower (Helianthus annuus L.) appears as an income alternative to the producers of the northeastern region of Brazil, however limited by the salinity present in the waters of the region, which makes it necessary to select cultivars that are more adaptable to this situation. On this, the objective was assessing the development of two cultivars of cutting ornamental sunflower with waters of different salinities. The experiment was performed in conditions of protected environment at UFCG, CCTA-Pombal-PB. It was performed in outline of blocks in factorial scheme 5 &times; 2, being five

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17

Demenko, V. M., O. L. Golinach та V. A. Vlasenko. "The phytosanitary status of sunflower crops оf north-eastern Forest-Steppe of Ukraine". Bulletin of Sumy National Agrarian University. The series: Agronomy and Biology, № 4(38) (25 грудня 2019): 3–7. http://dx.doi.org/10.32845/agrobio.2019.4.1.

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The high economic efficiency of sunflower growing contributed to a sharp increase in the sunflower planting acreage in Sumy region. The increase of cultivated areas under sunflower resulted in an oversaturation of crop rotations with this crop. The study of the phytosanitary status of sunflower crops was carried out in the basic farms of the phytosanitary security department of the Main Office of State Consumer Service (Derzhprodsluzhba) in Sumy region. The research methodology was commonly accepted. The main pests of sunflower crops were grey beet weevil (Tanymecus palliates Fabr.), lar

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18

Terzic, Sreten, and Jovanka Atlagic. "Phenotype variability and inheritance of leaf shape in F1 generation of sunflower." Genetika 37, no. 1 (2005): 49–55. http://dx.doi.org/10.2298/gensr0501049t.

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Populations of wild sunflower species were crossed with cms cultivated lines because of their high variability. Variability was determined by measuring inflorescence diameter, ray flower number and the leaf length and width. The data was used for hierarchical cluster analysis in the SYSTAT 10 program and the obtained dendrogram was used to interpret divergence of used populations. Comparing 25 hybrid populations with parents tested the modes of inheritance. Cluster analysis divided plants in to three groups. The first ones were inbred lines of cultivated sunflower. In the middle of the cluster

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19

Zhang, Y., J. Zhang, J. Gao, et al. "The Colonization Process of Sunflower by a Green Fluorescent Protein-Tagged Isolate of Verticillium dahliae and its Seed Transmission." Plant Disease 102, no. 9 (2018): 1772–78. http://dx.doi.org/10.1094/pdis-01-18-0074-re.

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Sunflower Verticillium wilt is a widespread and destructive disease caused by the soilborne pathogen Verticillium dahliae. To better understand the process of infection and seed transmission of the fungus, sunflower roots were inoculated with a V. dahliae strain (VdBM9-6) labeled with green fluorescent protein (GFP) and monitored microscopically. After 24 to 96 h postinoculation (hpi), conidia germinated and developed into mycelium on root hairs, elongation zones, and caps of lateral roots. Mycelium colonized vascular bundles of lateral roots and taproots at 7 days postinoculation (dpi). At 10

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20

Stefanic, Edita, Sanda Rasic, Pavo Lucic, et al. "The Critical Period of Weed Control Influences Sunflower (Helianthus annuus L.) Yield, Yield Components but Not Oil Content." Agronomy 13, no. 8 (2023): 2008. http://dx.doi.org/10.3390/agronomy13082008.

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Field studies were conducted in the northeastern part of the Republic of Croatia to determine the influence of the critical period of weed interference on sunflower (Helianthus annuus) yield, yield components, and oil content. For this purpose, different durations of competition were established, allowing weeds to infest the crop for increasing periods of time after planting or maintaining plots weed-free for increasing periods of time after planting. The beginning and the end of the critical period of weed control (CPWC), based on a 5% and 10% loss of sunflower yield, were determined by fitti

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21

Akinola, J. A., A. Larbi, J. A. Odedire, et al. "Effects of NPK Fertilizer application and plant density on forage yield and chemical composition of wild sunflower (Tithonia diversifolia)." Nigerian Journal of Animal Production 50, no. 1 (2023): 46–60. http://dx.doi.org/10.51791/njap.v50i1.3903.

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A study was conducted in 2017 and 2018, in the Forest Zone of southwestern Nigeria, to evaluate the yield and chemical composition of wild sunflower (Tithonia diversifolia) fertilized with compound fertilizer (20N:10P2O5:10K2O), under different planting densities. Seedlings of 20-day old Tithonia diversifolia were transplanted on a site, in a split plot arrangement, with fertilizer application at 0, 50, 100, 200 and 400kg/ha, using a planting density of 83.3 ×103, 166.7 ×103, 222 ×103, 333 ×103, 500 ×103, and 1000 ×103 plants/ha. After 114-116 days of growth, the plants were harvested and anal

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Dasoju, Shravan, Michael R. Evans, and Brian E. Whipker. "Paclobutrazol Drench Activity in Coir- and Peat-based Root Substrates." HortTechnology 8, no. 4 (1998): 595–98. http://dx.doi.org/10.21273/horttech.8.4.595.

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Paclobutrazol drench applications of 0, 2, and 4 mg a.i./pot were applied to `Pacino' potted sunflowers (Helianthus annuus L.) and `Red Pigmy' tuberous rooted dahlias (Dahlia variabilis Willd.) grown in substrates containing 50%, 60%, 70%, or 80% (by volume) sphagnum peat or coir, with the remainder being perlite, to study the efficacy of paclobutrazol (Bonzi). Potted sunflower plant height differed significantly for peat- and coir-based substrates, with greater plant height being observed in coir-based substrates. Plant diameter was significantly greater at higher percentages of peat or coir

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23

Damian, Sorin Lucian, Daniel Bucur, and Sergiu Pruteanu. "https://apps.crossref.org/webDeposit/." Current Trends in Natural Sciences 11, no. 21 (2022): 112–17. http://dx.doi.org/10.47068/ctns.2022.v11i21.011.

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Water consumption of agricultural plants can be considered one of the main elements of the assessment needed for irrigation. Covering water needs during the growing season is done by applying irrigation. Quantitative studies on evapotranspiration performed on maize and sunflower crops showed different values. The average water consumption calculated according to the Thornthwaite method recorded the highest values in June, July and August. For the maize crop, the highest water consumption was reached in July (1480 m3 / ha or 27.1% of the total consumption), during which time the pollination, th

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Zhang, Teng, Feng Wang, and Paula Elomaa. "Repatterning of the inflorescence meristem in Gerbera hybrida after wounding." Journal of Plant Research 134, no. 3 (2021): 431–40. http://dx.doi.org/10.1007/s10265-021-01253-z.

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AbstractThe Asteraceae plant family is characterized by inflorescences, called flower heads or capitula that may combine hundreds of individual florets into a single flower-like structure. The florets are arranged in a regular phyllotactic pattern with Fibonacci numbers of left- and right-winding spirals. Such a pattern may be disrupted due to physical constraints or by wounding occurring during the early meristem development. Recovery from wounding re-establishes patterning although the mechanisms have remained elusive. In this study, we applied Gerbera hybrida as a model system and establish

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25

Alauddin, Md, Md Khalilur Rahman, and Abu Hena Md Zulfiquar Ali. "Influence of Vermicompost and Chemical Fertilizers On Macronutrients Content in Different Organs and Oil Content in Seeds of Sunflower (Helianthus Annuus L.)." Bangladesh Journal of Botany 52, no. 1 (2023): 149–57. http://dx.doi.org/10.3329/bjb.v52i1.65245.

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Effects of vermicompost and chemical fertilizers on the concentration and uptake of NPKS in different organs as well as well as oil content of sunflower (cv. BARI-2) were evaluated. The experiment consisted of 16 treatments, viz.: VC1 Control, VC2, VC3, VC4, VC5, VC6, VC7, VC8, VC9, VC10, VC11, VC12, VC13, VC14, VC15 and VC16. Results showed that the concentration, uptake of macronutrients (NPKS) and oil content of seeds of the crop increased significantly (P< 0.05) with increasing rate of the amendments over the control in most of the cases. Combination of the treatments showed better perf

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Jocković, Jelena, Nemanja Rajčević, Lana Zorić, et al. "Secretory Tissues and Volatile Components of Disc Florets in Several Wild Helianthus L. Species." Plants 13, no. 3 (2024): 345. http://dx.doi.org/10.3390/plants13030345.

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Although flower pollinator interactions are known to be mediated by floral traits, not enough attention has been paid to the research of secretory tissues and volatile components of sunflower disc florets as potentially important parameters in breeding programs. (1) To our knowledge, this is the first integrated study aimed at better understanding the attractiveness of sunflower capitula to insects. In the study, we have made a very detailed comparative analysis of secretory tissues and the characterization of the volatile components (VOCs) of disc florets in 10 wild perennial Helianthus speci

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Alauddin, M., GM Mohsin, AHM Zulfiquar Ali, and MK Rahman. "Effects of poultry litter compost and chemical fertilizers on growth and yield of field grown sunflower (Helianthus annus L.)." Dhaka University Journal of Biological Sciences 30, no. 1 (2021): 49–57. http://dx.doi.org/10.3329/dujbs.v30i1.51808.

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A field experiment was carried out in the research farm of Charfasson Govt. College, Bhola during Rabi season in 2016-2017 to evaluate the effects of poultry litter (PL) compost and NPK fertilizers on growth and yield of sunflower cv. BARI-2 (Keroni-2). Sixteen treatments were used with three replications each. Treatments were T1 : Control (-PL and –NPK), T2 : 1.5 ton PL/ha, T3 : 3.0 ton PL/ha, T4 : 4.5 ton PL/ha, T5 : N40P30K50 kg/ha, T6 : N80P60K100 kg/ha, T7 : N120P90K150 kg/ha, T8 : 1.5ton PL/ha + N40P30K50 kg/ha, T9 : 1.5 ton PL/ha + N80P60K100 kg/ha, T10 : 1.5 ton PL/ha + N120P90K150 kg/

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Sousa, Saulo Almeida, Vagner Maximino Leite, Vanessa de Oliveira Almeida, et al. "Agronomic characterization of sunflower cultivars for animal feeding in tropical conditions." Bioscience Journal 37 (September 15, 2021): e37050. http://dx.doi.org/10.14393/bj-v37n0a2021-53618.

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This study was developed to examine morpho-agronomic traits of 18 sunflower cultivars and identify superior cultivars in terms of grain yield, forage quality, or both, for animal feeding. Twenty-two morpho-agronomic traits related to plant development and architecture; earliness of maturity; grain yield (achenes); dry matter yield; and dry matter content were evaluated. Cultivars Hélio 253, Hélio 358, Embrapa 122, BRS 321, and Hélio 360 showed inflorescence at the final stage. Aguará 4 showed the lowest flowering rate, characterizing it as late-maturing. For grain yield, cultivars Charrua, Oli

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Whipker, Brian E., and Ingram McCall. "Response of Potted Sunflower Cultivars to Daminozide Foliar Sprays and Paclobutrazol Drenches." HortTechnology 10, no. 1 (2000): 209–11. http://dx.doi.org/10.21273/horttech.10.1.209.

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Plant growth retardant (PGR) foliar sprays of daminozide at 4,000 or 8,000 mg·L-1 (ppm) and paclobutrazol drenches of 2 or 4 mg a.i. per pot were applied to `Big Smile', `Pacino', `Sundance Kid', `Sunspot', and `Teddy Bear' pot sunflowers (Helianthus annuus L.) to compare their chemical height control. Plant height varied among the cultivars due to genetic variation. The percentage reduction in plant height from the untreated control only was significant at the PGR level, indicating similar responses of all five cultivars to each PGR rate. Paclobutrazol drenches at 2 mg and daminozide foliar s

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Costa, Carlos Alberto Araújo, Raissa Rachel Salustriano da Silva-Matos, Gênesis Alves de Azevedo, et al. "Humic substance and substrate based on babassu decomposed stem in the production of sunflower seedlings." Research, Society and Development 9, no. 8 (2020): e456986098. http://dx.doi.org/10.33448/rsd-v9i8.6098.

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Our objective was to investigate the influence of alternative substrates based on stem decomposed by babassu and humic substances in the production of sunflower seedlings. The experimental design was randomized blocks, in a 3 x 4 factorial scheme (substrate x humic substances). Twelve treatments were studied, T1 (100% babassu stem decomposed (BDS) + 0 ml L-1 HS), T2 (100% BDS + 12.5 ml L-1 HS), T3 (100% BDS + 25 ml L-1 HS), T4 (100% DBS + 50 ml L-1 HS), T5 (50% DBS + 50% LAd + 0 ml L-1 HS), T6 (50% DBS + 50% LAd + 12, 5 ml L-1 HS), T7 (50% DBS + 50% LAd + 25 ml L-1 HS), T8 (50% DBS + 50% LAd +

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Peretyagina, T. M., Yu V. Chebanova, Ya N. Demurin, T. A. Zemtseva, and A. V. Epishkina. "The variety of the ornamental sunflower Astoria bred in the V.S. Pustovoit All-Russian Research Institute of Oil Crops." Oil Crops 2, no. 194 (2023): 113–15. http://dx.doi.org/10.25230/2412-608x-2023-2-194-113-115.

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In 2022, the ornamental variety Astoria was submitted into the State variety testing. The variety Astoria was obtained as a result of crossing the ornamental variety Plyushevy mishka and ornamental samples with lemon and apricot ray flowers, followed by the production of a synthetic, its multiple self-pollination and individual selection according to the characteristics of the morphotype, culminating in the transfer of the fertile line to CMS RIG. The main ornamental features of the variety Astoria are: the original inflorescence at the stage of budding and flowering, light yellow color of ray

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Fedoriak, M. M., A. V. Zhuk, O. D. Zarochentseva, et al. "AN ALGORITHM FOR RESEARCH OF SUNFLOWER HYBRIDS PRODUCTIVITY UNDER CONDITIONS OF INSECT POLLINATION." Biolohichni systemy 15, no. 1 (2023): 52–63. http://dx.doi.org/10.31861/biosystems2023.01.052.

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The article summarizes the practical experience of five-year research on seed productivity of autofertile hybrids of sunflower Helianthus annuus L. in the presence and absence of insect pollination. The productivity of 21 sunflower hybrids from six producers «Pioneer», «Syngenta», «Euralis», «Limagrain», «MAS Seeds», «RAGT» - was studied. Experiments were conducted in the fields of the Continental Farmers Group agro-holding in the agroclimatic conditions of Western Ukraine. To exclude the effect of insect pollination, the heads of experimental plants were covered with bag isolators made of 50x

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Garbar, L. A., U. Lishchuk, N. I. Dovbash, and N. V. Knap. "Efficiency of fertilizing in sunflower cultivation technology." PLANT AND SOIL SCIENCE 12, no. 1 (2021): 28–38. http://dx.doi.org/10.31548/agr2021.01.028.

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Nutritional conditions of plants during the growing season is one of the main factors aimed at realizing the genetic potential of sunflower hybrids for growing them in any soil and climatic conditions. Currently, it is important to study the genetic potential of domestic hybrids under different growing conditions in order to identify their competitiveness, which provides an increase in quality and yield of the crop. The use in the production of a significant range of complex microfertilizers on the background of the main fertilizer helps to increase the efficiency of plant use of nutrients of

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Alauddin, M., MK Rahman, and HMZ Ali. "Influence of Cow Dung and Npk Fertilizers on Macronutrients and Oil Content of Sunflower (Helianthus Annuus L.)." Journal of Biodiversity Conservation and Bioresource Management 8, no. 2 (2023): 51–60. http://dx.doi.org/10.3329/jbcbm.v8i2.63817.

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A field experiment was carried out at the research farm of Charfasson Govt. College, Bhola, Bangladesh in rabi season in 2015-2016 to evaluate the effects of cow dung (CD) with and without NPK fertilizers to estimate the concentration, uptake and oil content of sunflower cv. BARI-2 (Keroni-2). It was laid out in a completely randomized block design (CRBD) having sixteen treatments with three replications and plot size was 3m×2m. Treatments were T1: Control (- CD and -NPK), T2: 2.5t CD ha-1, T3: 5t CD ha-1, T4: 7.5t CD ha-1, T5: N40P30K50kg ha-1, T6: N80P60K100kg ha-1, T7: N120P90K150kg ha-1, T

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Gonzaga, Maria Isidória Silva, Danyelle Chaves Figueiredo de Souza, and José Carlos de Jesus Santos. "Use of organic waste biochar as an innovative alternative for increasing agricultural productivity in small rural communities." Research, Society and Development 10, no. 4 (2021): e8910413848. http://dx.doi.org/10.33448/rsd-v10i4.13848.

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Biochar, pyrolyzed organic waste for agronomic and environmental purposes, is a viable alternative to improve soil quality in small farm areas in the state of Sergipe, where there is a shortage of water and chemical inputs. This study evaluated the effect of single and simultaneous application of doses (t ha-1) of sewage sludge (SS) and dry coconut shell (CS) on some soil properties and sunflower growth and nutrition (Helianthus annuus L.), in São Cristóvão-SE. The experiment was carried out in a completely randomized scheme, with 6 treatments (1. SE60CS0; 2. SE30CS0; 3. SE20CS10; 4. SE10CS20;

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Mizzotti, Chiara, Marco Fambrini, Elisabetta Caporali, Simona Masiero, and Claudio Pugliesi. "A CYCLOIDEA-like gene mutation in sunflower determines an unusual floret type able to produce filled achenes at the periphery of the pseudanthium." Botany 93, no. 3 (2015): 171–81. http://dx.doi.org/10.1139/cjb-2014-0210.

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The pseudanthium of sunflower (Helianthus annuus L.) consists of two floret types: zygomorphic sterile ray florets and actinomorphic hermaphrodite disc florets. In the tubular ray flower (turf) mutant, the loss-of-function of a CYCLOIDEA (CYC) gene generates hermaphrodite tubular-like ray florets that replace the normal sterile ray florets. We evaluated whether tubular-like ray florets have a multifaceted set of floral traits and the presence of heteromorphic seeds in the turf inflorescence. During early stages of floral ontogeny, primordia of both tubular-like ray florets and typical ray flor

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Shamran, Haider. "Effect of planting dates and potassium levels on the growth and yield of sunflowers." Muthanna Journal for Agricultural Sciences 9, no. 2 (2022): 1–7. http://dx.doi.org/10.52113/mjas04/9.2/20.

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The study was conducted during spring season (2022), to determine the effect of early planting for four planting dates (18/ 1, 2/ 2, 17/ 2 and 4/3/2022), and four levels of potassium fertilizer (30, 60, 90 and 120) kg ha-1 , on the yield and fullness of sunflower grains, cultivar Shamoos, was carried out by arranging the split panels according to a Randomized Complete Block Design with three replicates The results of the experiment showed significant effects of planting dates on growth, yield and quality traits, as the D4 planting date was superior to vegetative growth traits (50% flowering an

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Berti, Fabio, Marco Fambrini, Maurizio Turi, Daniele Bertini, and Claudio Pugliesi. "Mutations of corolla symmetry affect carpel and stamen development in Helianthus annuus." Canadian Journal of Botany 83, no. 8 (2005): 1065–72. http://dx.doi.org/10.1139/b05-047.

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The inflorescence of sunflower (Helianthus annuus L.) is heterogamous with zygomorphic ray flowers located in the outermost whorl of the head and actinomorphic disk flowers arrayed in arcs radiating from the center of the head. Two mutants with altered corolla symmetry have been described. The Chrysanthemoides (Chry) mutant is characterized by a shift from the polysymmetric corolla of disk flowers into a monosymmetric ray-like corolla. The tubular ray flower (turf) mutant is characterized by a shift from the zygomorphic corolla of ray flowers into a nearly actinomorphic tubular-like corolla. W

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Popov, I. B., O. Yu Kremneva, A. A. Pachkin, Ya S. Ermakov, and D. O. Leptyagin. "The role of sunflower crops in maintaining the biodiversity of hymenopterous insects in agrocenoses of Krasnodar Territory." South of Russia: ecology, development 18, no. 2 (2023): 127–39. http://dx.doi.org/10.18470/1992-1098-2023-2-127-139.

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Aim. To study the species composition and abundance of anthophilic Hymenopteran insects in the sunflower agrocenosis and the role of its flowers in maintaining biodiversity in the agrocenoses of the Krasnodar Territory. Material and Methods. The studies were conducted during the sunflower growing season in the Krasnodar Territory from 2017 to 2022 in the Kanevsky, Krasnoarmeysky, Krylovsky, Labinsky, Ust‐Labinsky, Tbilisi and Temryuk districts.Results. In sunflower agrocenoses, 53 species of stinging hymenopteran insects from 10 families are found. For each research area, there is an individua

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Alauddin, M., GM Mohsin, AHMZ Ali, and MK Rahman. "Interactive effects of rice bran compost and chemical fertilizers on macronutrients, oil and protein content in sunflower (Helianthus annuus L.)." International Journal of Agricultural Research, Innovation and Technology 10, no. 2 (2021): 91–99. http://dx.doi.org/10.3329/ijarit.v10i2.51582.

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A field experiment was conducted at the research farm of Charfasson Govt. College, Bhola, Bangladesh in rabi season in 2015-2016 to evaluate the impact of conjunctive use of chemical fertilizers with rice bran on concentration, uptake and seed quality of sunflower cv. BARI-2 (Keroni-2). The experiment was laid out in the randomized complete block design (RCBD) having sixteen treatments with three replications. The size of the plots were 3 m x 2 m. Treatments were T1 Control (- RB and -NPK), T2: 2.5 t RB ha-1, T3: 5.0 t RB ha-1,T4: 7.5 t RB ha-1, T5: N40P30K50 kg ha-1,T6: N80P60K100 kg ha-1, T7

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M, Alauddin, Mohsin GM, Ali AHMZ, and Rahman MK. "Interactive effects of rice bran compost and chemical fertilizers on macronutrients, oil and protein content in sunflower (Helianthus annuus L.)." International Journal of Agricultural Research, Innovation and Technology 10, no. 2 (2020): 91–99. https://doi.org/10.3329/ijarit.v10i2.51582.

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A field experiment was conducted at the research farm of Charfasson Govt. College, Bhola, Bangladesh in rabi season in 2015-2016 to evaluate the impact of conjunctive use of chemical fertilizers with rice bran on concentration, uptake and seed quality of sunflower <em>cv. </em>BARI-2 (Keroni-2). The experiment was laid out in the randomized complete block design (RCBD) having sixteen treatments with three replications. The size of the plots were 3 m x 2 m. Treatments were T1 Control (- RB and -NPK), T2: 2.5 t RB ha-1, T3: 5.0 t RB ha-1,T4: 7.5 t RB ha-1, T5: N40P30K50 kg ha-1,T6: N80

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Dor, E., R. Aly, and J. Hershenhorn. "Pomegranate (Punica granatum) as Host of the Broomrapes Phelipanche aegyptiaca and Orobanche crenata in Israel." Plant Disease 98, no. 6 (2014): 859. http://dx.doi.org/10.1094/pdis-10-13-1058-pdn.

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Orobanche and Phelipanche, commonly known as broomrape, are dicotyledonous holoparasitic flowering plants that cause heavy economic losses in a wide variety of plant species. Egyptian broomrape (Phelipanche aegyptiaca Pomel.) parasitizes more than 30 food and ornamental crops, including tomato, sunflower, tobacco, chickpea and many others in different parts of the world. Crenate broomrape (Orobanche crenata Forsk.) parasitizes important legume crops, such as lentil, faba bean, chickpea, pea, vetches, and grass pea, as well as some apiaceous crops, such as carrot (4). This is the first report o

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Polivkina, Yelena Nikolayevna, Liliya Fyodorovna Subbotina, and Fail Fergatovich Zhamaldinov. "Investigation of tritium assimilation by sunflower crop at uptake through root." Bulletin of the Karaganda University. “Biology, medicine, geography Series” 106, no. 2 (2022): 111–17. http://dx.doi.org/10.31489/2022bmg2/111-117.

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This study presents a quantitative assessment of tritium assimilation by sunflower (Helianthus annuus L.) crop at HTO uptake by root in vitro. It is found that at chronic uptake of tritium radionuclide as tritiated water (HTO) by sunflower through root system mean value of OBT/TFWT ratio during vegetation was 0.21. The conversation rate of tissue free water tritium (TFWT) to organic matter as organically bound tritium (OBT) varied from 0.08 to 0.044 % h–1, with a maximum in the leafage phase. Translocation index (TLI) for sunflower crop at root uptake of tritium was 65 %. The distribution natu

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Vassilevska-Ivanova, Roumiana, Boris Kraptchev, Ira Stancheva, and Maria Geneva. "A compact sunflower line produced after cross Helianthus annuus x Verbesina encelioides." Open Life Sciences 8, no. 5 (2013): 492–98. http://dx.doi.org/10.2478/s11535-013-0147-8.

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AbstractIntergeneric cross was made between the cultivated sunflower inbred line HA89 and an accession of wild Verbesina encelioides tolerant to drought and high temperature. The line was a BC2F5 progeny. The most remarkable feature of the plants was their compact architecture due to short petiole length and also, rather specific bright-yellow inflorescences. Similar plant architecture did not exist in either the wild or the cultivated parent. For sunflower, it is considered as a favourable and potentially useful adaptive trait. The line was multi-branched of medium type branching and possesse

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Totsky, I. V., and V. A. Lyakh. "Pollen Selection for Drought Tolerance in Sunflower." Helia 38, no. 63 (2015): 211–20. http://dx.doi.org/10.1515/helia-2015-0012.

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AbstractThe drought resistance and genetic structure of F2 sporophytic populations for some morphological marker traits after pollen selection for water stress tolerance in F1 sunflower hybrids has been studied. The emasculated inflorescences were moistened with 10% and 20% of PEG 6000 solution in the experiments and with distilled water in the control. Freshly collected pollen was used for pollination after drying up the PEG solution on stigmas. F2 resulted seeds were germinated in 20% solution of PEG 6000 for a period of 3 days, and then the percentage of seed germination was counted. Germin

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Presotto, Alejandro, Fernando Hernández, Mauricio Casquero, et al. "Seed bank dynamics of an invasive alien species, Helianthus annuus L." Journal of Plant Ecology 13, no. 3 (2020): 313–22. http://dx.doi.org/10.1093/jpe/rtaa016.

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Abstract Aims The ability to form persistent seed banks is one of the best predictors of species’ potential to establish in new ranges. Wild sunflower is native to North America where the formation of persistent seed banks is promoted by disturbance and it plays a key role on the establishment and persistence of native populations. However, the role of the seed banks on the establishment and persistence of invasive populations has not been studied. Here, we evaluated the role of seed bank and disturbance on the establishment and fitness, and seed persistence in the soil in several sunflower bi

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Prischmann-Voldseth, Deirdre A., Stephanie J. Swenson, and Robert Brenner. "Pollen Feeding Reduces Predation of Northern Corn Rootworm Eggs (Coleoptera: Chrysomelidae, Diabrotica barberi) by a Soil-Dwelling Mite (Acari: Laelapidae: Stratiolaelaps scimitus)." Insects 12, no. 11 (2021): 979. http://dx.doi.org/10.3390/insects12110979.

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Landscape diversification with flowering plants can benefit pollinators and natural enemies, although insect pests can also use floral resources for nutrition and chemoprotection. Corn rootworms (Coleoptera: Chrysomelidae, Diabrotica spp.) are major pests of corn (Zea mays L.), and while subterranean larvae primarily feed on corn roots, adult rootworms commonly consume floral resources from other plant species. We quantified the species, density, and sex of adult corn Diabroticite rootworm beetles on wild and cultivated sunflower, corn, and squash, quantified pollen within the bodies of adult

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Amin, Ola. "EVALUATION THE EFFECT OF PRESERVATIVE SOLUTIONS AND STORAGE CONDITIONS ON SHELF LIFE OF SUNFLOWER INFLORESCENCES." Scientific Journal of Flowers and Ornamental Plants 3, no. 3 (2016): 167–76. http://dx.doi.org/10.21608/sjfop.2016.5132.

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Kosareva, Oksana, and Lyudmila Rodionova. "Methods for cleaning inflorescences-baskets from sunflower ballast substances in the technology of pectin extract." Proceedings of the Kuban State Agrarian University 1, no. 62 (2016): 171–75. http://dx.doi.org/10.21515/1999-1703-62-171-175.

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Nascimento, Angela Maria Pereira do, Patrícia Duarte de Oliveira Paiva, Guilherme Mariano Manfredini, and Thaís Silva Sales. "Efeito do pulsing em hastes cortadas de girassol ornamental ‘Sunbright Supreme’ em diferentes estádios de desenvolvimento." Ornamental Horticulture 25, no. 2 (2019): 149–57. http://dx.doi.org/10.14295/oh.v25i2.1991.

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The use of ornamental sunflower as a cut flower has been increasing due to the advent of new cultivars and the demand of the flowergrowing market for new products. However, there are few studies related to postharvest of this species. The objective of this research was to evaluate the water balance and durability of ‘Sunbright Supreme’ sunflower collected at three different harvest stages and submitted or not to a pulsing with sucrose. The flower stalks were collected fully open, at an intermediate opening stage and also closed; they were then standardized at 50 cm and stored in water or 4% su

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