Letteratura scientifica selezionata sul tema "Berry morphology"

Counting grape berries and measuring their size can provide accurate data for robot picking behavior decision-making, yield estimation, and quality evaluation. When grapes are picked, there is a strong uncertainty in the external environment and the shape of the grapes. Counting grape berries and measuring berry size are challenging tasks. Computer vision has made a huge breakthrough in this field. Although the detection method of grape berries based on 3D point cloud information relies on scanning equipment to estimate the number and yield of grape berries, the detection method is difficult to generalize. Grape berry detection based on 2D images is an effective method to solve this problem. However, it is difficult for traditional algorithms to accurately measure the berry size and other parameters, and there is still the problem of the low robustness of berry counting. In response to the above problems, we propose a grape berry detection method based on edge image processing and geometric morphology. The edge contour search and the corner detection algorithm are introduced to detect the concave point position of the berry edge contour extracted by the Canny algorithm to obtain the best contour segment. To correctly obtain the edge contour information of each berry and reduce the error grouping of contour segments, this paper proposes an algorithm for combining contour segments based on clustering search strategy and rotation direction determination, which realizes the correct reorganization of the segmented contour segments, to achieve an accurate calculation of the number of berries and an accurate measurement of their size. The experimental results prove that our proposed method has an average accuracy of 87.76% for the detection of the concave points of the edge contours of different types of grapes, which can achieve a good edge contour segmentation. The average accuracy of the detection of the number of grapes berries in this paper is 91.42%, which is 4.75% higher than that of the Hough transform. The average error between the measured berry size and the actual berry size is 2.30 mm, and the maximum error is 5.62 mm, which is within a reasonable range. The results prove that the method proposed in this paper is robust enough to detect different types of grape berries.

The phenotypic changes that occurred during the domestication and diversification of grapevine are well known, particularly changes in seed morphology, but the functional causes and consequences behind these variations are poorly understood. Wild and domesticate grapes differ, among others, in the form of their pips: wild grapes produce roundish pips with short stalks and cultivated varieties have more elongated pips with longer stalks. Such variations of form are of first importance for archaeobotany since the pip form is, most often, the only remaining information in archaeological settings. This study aims to enlighten archaeobotanical record and grapevine pip development by better understanding how size and shape (co)variates between pip and berry in both wild and domesticated Vitis vinifera. The covariation of berry size, number of seeds per berry (“piposity”), pip size and pip shape were explored on 49 grapevine accessions sampled among Euro-Mediterranean traditional cultivars and wild grapevines. We show that for wild grapevine, the higher the piposity, the bigger the berry and the more elongated the pip. For both wild and domesticated grapevine, the longer is the pip, the more it has a “domesticated” shape. Consequences for archaeobotanical studies are tested and discussed, and these covariations allowed the inference of berry dimensions from archaeological pips from a Southern France Roman site. This systematic exploration sheds light on new aspects of pip-berry relationship, in both size and shape, on grapevine eco-evo-devo changes during domestication, and invites to explore further the functional ecology of grapevine pip and berry and notably the impact of cultivation practices and human selection on grapevine morphology.

Berry shrivel, a physiological disorder, adversely affects ripening of grape (Vitis vinifera L.) berries; however, its causes are unknown. We adopted a holistic approach to elucidate symptomatology, morphoanatomy, and osmotic behavior of grape berry shrivel. Berries from healthy and afflicted vines were analyzed compositionally and with various techniques of microscopy. Healthy berries developed all physical and compositional attributes desirable for wine-making. Conversely, berry shrivel berries were grossly metamorphosed manifested as shriveling of the pericarp, which paralleled with loss of membrane competence in the mesocarp cells causing its collapse and a loss of brush. The most intriguing observation was the presence of non-druse crystals. These berries had high osmotic potential (ψS) as a result of low accumulations of sugar and potassium. Nonetheless, the seed morphology, structure, and viability were similar to healthy seeds. Berry shrivel grotesquely modified grape berries both compositionally and structurally, which was paralleled by their inability to accumulate sugars followed by cell death in the mesocarp. Although the mechanisms of berry shrivel remain uncertain, our study provides valuable background information for generating suitable guidelines to minimize the incidences of berry shrivel and also to design future studies toward unraveling the mechanistic basis of berry shrivel.

The berry morphology (size and weight), phytochemical content (polyphenols, flavonoids, anthocyanins, and proanthocyanidins), and antioxidant activity of lowbush blueberry (Vaccinium angustifolium Ait.) wild clone QB 9C and cultivar Fundy, propagated by tissue culture (TC) and softwood cutting (SC), were studied over two growing seasons to evaluate the effect of propagation methods on fruit yield and the content of antioxidant metabolites. Number of flower clusters, number of berries and berry weight per plant, diameter and weight of individual berry were higher in SC plants than those of TC plants. Significant interaction between genotypes and propagation methods were observed for total phenolic and flavonoid content of fruits. Berries from TC plants contained more polyphenols and flavonoids than those of SC plants. Twenty microsatellite markers were used to assess the clonal fidelity of TC regenerants and SC plants. The identical monomorphic amplification profiles within the TC plants of each genotype confirmed the clonal fidelity of micropropagated blueberry plants. These results indicate that propagation methods affected the morphology and antioxidant metabolites but maintained trueness-to-type genetic makeup in blueberry.

Wine quality depends mainly on the characteristics of the grape it is made of, and one of the attributes affecting wine composition is cluster and berry morphology. The aim of this study was to represent variability of morphological characteristics between clones of the autochthonous grape variety Prokupac and performed chemical evaluation of wines obtained from them. Total phenolic content was generally low and it ranged from 33.0 to 114.5 mg GAE/100 mL. Six main anthocyanin compounds with malvidin as the main anthocyanidin were detected. Malvidin-3-O-glucoside was the most abundant anthocyanin ranging from 59.8 to 101.7 ?g/mL. Clones 43/5 and 43/4 are marked as those from which wines with the highest quality are obtained. According to our results clonal selection makes a significant difference in Prokupac wine quality. On the other hand, there is a poor response of wine quality parameters to variation in morphological attributes of clusters and berries (bunch weight, proportion of stem, berry and seed weight, skin, pulp and seed weight per berry).

Seventeen species of the genus Trochodendroides and one species of the genus Nyssidium are described from the Albian-Maastrichtian deposits of the Chulym-Yenisei depression (Western Siberia), Lena-Vilyui depression (Eastern Siberia) and Kolyma River basin. The study of recently collected materials and revision of previous data allow us to describe 4 new species (T. buorensis Golovn., sp. nov, T. beketovii Golovn., sp. nov., T. rostrata Golovn. et P. Alekseev, sp. nov.) and to offer 6 new combinations (T. tiungensis (Budants.) Golovn., comb. nov., T. heterophylla (Budants.) Golovn., comb. nov., T. kemensis (Ananjev) Golovn., comb. nov., T. sibirica (Tcherepnin) P. Alekseev, comb. nov., T. bajkovskae (I. Lebed.) Golovn., comb. nov., T. gromovii (E. Lebed.) Golovn., comb. nov). The new names were proposed for two species (T. budantsevii Golovn., nom. nov., T. ananjevii Golovn., nom. nov.). The morphological diversity, variability and value of different characters for distinction of species are discussed. The epidermal features were firstly examined for T. heterophylla and T. ananjevii. They are mostly similar to epidermal features of Cercidiphyllum. The genus Trochendroides firstly appeared in Siberia in the early-middle Albian as a minor component of the conifer-dominated Mesophytic floras. The determination of this genus is verified by the findings of Nyssidium fruits. During the Late Cretaceous the genus Trochodendroides was common member in floras of the Siberian-Canadian phythogeographic region. The systematic and morphology diversity of Trochodendroides was comparatively low in the late Albian–Cenomanian and the findings of these leaves are rare. The abundance of Trochodendroides leaves was increased in the Turonian and the Coniacian. During the Coniacian this genus reached the highest systematic and morphologic diversity (the Antibes and the Vilyui floras). In the Santonian-Campanian the abundance of Trochodendroides leaves was decreasing again. In this time the lanceolate or narrow-ovate leaf morphotypes were most usual. They were often described as Macclintockia, Zizyphus or Paliurus. Genus Trochodendroides is not presented in the Cretaceous deposits of Europe and firstly appeared there in the Tertiary. This genus is rare in the Late Cretaceous deposits of the Turan province, near the boundary between Siberian-Canadian and Euro-Sinian phythogeographic regions.

Synsepalum dulcificum from the family Sapotaceae is known as miracle fruit and is a valuable horticultural species. All plant parts are of medicinal importance whereas the fruit known as magic berry, miracle berry, or sweet berry is consumed fresh. Surprisingly, very little is known on the species in terms of flower morphology and flower development. In this study, an observation on the flower morphology and flower development of miracle fruit has been made with the aid of microscopic techniques. Miracle fruit flower requires 100 days to develop from reproductive meristem to full anthesis. The flower development can be divided into six stages based on the size and appearance of the flower bud. The fruit with persistent style developed and ripened 90 days after anthesis. Heavy fruit drop was observed at 40–60 days after anthesis which contributed to the final fruit set of average of 5.06% per plant. Through this study, miracle fruit is strongly insect pollinated and prevents self-fertilization. A study on pollination ecology is needed to identify the pollinator for miracle fruit, as this is important in manipulating fruit loading in the future.

Abstract—The type material on which the fossil genus name Ampelocissites was established in 1929 has been reexamined with the aid of X-ray micro-computed tomography (μ-CT) scanning and compared with seeds of extant taxa to assess the relationships of these fossils within the grape family, Vitaceae. The specimens were collected from a sandstone of late Paleocene or early Eocene age. Although originally inferred by Berry to be intermediate in morphology between Ampelocissus and Vitis, the newly revealed details of seed morphology indicate that these seeds represent instead the Ampelopsis clade. Digital cross sections show that the seed coat maintains its thickness over the external surfaces, but diminishes quickly in the ventral infolds. This feature, along with the elliptical chalaza and lack of an apical groove, indicate that Ampelocissites lytlensis Berry probably represents Ampelopsis or Nekemias (rather than Ampelocissus or Vitis) and that the generic name Ampelocissites may be useful for fossil seeds with morphology consistent with the Ampelopsis clade that lack sufficient characters to specify placement within one of these extant genera.

Electrospinning is a process of production fibers with diameters ranging from the submicron down to the nanometer size by applying a high voltage to a polymer solution. The important parameters in the morphology of electrospun polymer fibers are polymer structure, polymer solution properties, processing conditions, and ambient parameters. In the present work electrospinning of polyacrylonitrile (PAN) has been attempted to generate uniform nanofibers without beads. Electrospinning was performed at various concentrations ranging from 4 to 18 w/v%. The effects of polymer solution properties on electrospinnability of the PAN/DMF solutions have investigated. Fiber morphology was observed under a scanning electron microscopy (SEM). For the polymer electrospun from low concentration (Be<2), polymer droplets have formed. For the polymer electrospun from semi-dilute solution concentration (24. The relationship between solution viscosity and its concentration is in the form: η 0.0205C4.16 and relation between the diameter of electro-spun the PAN nanofiber and solution concentration is in the form: d 0.0326C3.45. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/35141

Warming and drought associated with climate change are major concerns in grape production worldwide. Our current understanding on the effects of temperature on berries and wines has been indirectly gained from comparisons of thermally contrasting seasons or sites, or from experiments in controlled conditions. Indirect methods, however, cannot prove cause and effect relationships, and extrapolation from controlled environments to field is not warranted. A comprehensive comparison of these methods is discussed. Furthermore, interactions are the main cause of complexity in field experiments; nevertheless, predictions about warmer and drier environments are based on studies that separately addressed these factors. Using direct manipulation of temperature on field growing vines with open-top chambers, the current work is the first combining water and temperature regimes in realistic vineyard conditions. The aims of this research were: (i) to critically assess methods to investigate thermal effect in viticulture; (ii) to measure the effects of elevated temperature on berry shrivelling (BS) and berry mesocarp cell death (MCD) in Shiraz and Chardonnay (exp. 1); and to evaluate the single and combined effects of temperature and water deficit on (iii) BS, MCD and on (iv) berry and wine chemical and sensorial composition in Shiraz (exp. 2). An increment in background temperature increased both MCD and BS in Shiraz, and increased MCD but had not impact on BS in Chardonnay; MCD seems necessary but not sufficient to explain BS. Similarly, transient water deficit post-veraison increased MCD and BS at harvest in Shiraz. MCD response to temperature was primarily explained by the advance in onset, while the effect of water deficit was traced back to the increment in the rate of MCD post-onset. An interaction between water deficit and temperature was found whereby the onset of berry net water loss was advanced by high temperature under water deficit but not in the irrigated treatments. MCD during berry senescence has been proposed to enhance berry flavour and aroma. The association between MCD and grape sensory balance was investigated in exp. 2. The balance of berry sensory traits was quantified in terms of offset, which accounts for delay or advance in ripening, and decoupling, which measures the scatter in the response of the different traits. Sensory traits typical of ripened berries were associated with higher MCD; however, warming and water deficit advanced ripening and decoupled berry sensory traits. Thermal effects were larger than water effects; the large decoupling caused by high temperature was mainly associated with differences within berry parts, whereas water-driven decoupling was mostly associated with a differential response between seed and other berry parts. The extraction of the major phenolics classes in fully ripe fruit and their contribution to the final wine chromatic characteristics, phenolic composition and sensory attributes were determined in exp. 2. The effect of temperature on berry composition was larger than the effect of water but no interactions were found between these factors. Significant, previously unrecorded interactions were found for grape and wine phenolics, and wine sensory traits. Wines from control temperature and water deficit treatments had higher total phenolics, tannin concentration, colour density, nonbleachable coloured compounds and a higher proportion of polymeric pigments than the other combinations of temperature and water regimes. These wines were also characterised by attributes such as cooked fruit flavour, berry flavour, tannin structure and higher red tones and colour saturation. Therefore, the effect of water deficit leading to colourful, flavoursome and phenolic-rich wines may not hold under high temperature. Scientifically, this thesis provides unequivocal answers to questions of berry physiology under elevated temperature in contrast to indirect methods and accounts for previously unknown interactions with water deficit in realistic vineyard conditions. From the perspective of the industry, this study represents a novel contribution as it answers the question of how warmer and drier conditions during ripening would affect grape and wine attributes and established the bases for new research aiming at counteracting the effects of climate change.
Thesis (Ph.D.) -- University of Adelaide, School of Agriculture, Food and Wine, 2014

Yolanda Tapia¹, Adolfo Vigil de Insausti¹, María Dolores Montaño ² ¹ Escuela Técnica Superior de Arquitectura de Valencia, UPV. Camino de Vera, s/n. 46022 Valencia, ²Pontificia Universidad Católica del Ecuador, PUCE. Av. 12 de Octubre 1076, Vicente Ramón Roca, Quito, Ecuador E-mail: yoly.tapiamora@gmail.com, advide@urb.upv.es, mdmontano@puce.edu.ec Keywords: Tulcán, Ecuador, urban, landscape, history Conference topics and scale: The Urban Form, “City and territory in the globalization age” Tulcán, located north in Ecuador is the capital of the province of Carchi. It is a city especially commercial and agricultural whose urban morphology responds to historical, environmental and administrative circumstances, that is how, since 1851, the date on which the “cantonization” takes place begins the formation of the capital city with an urban structure formed in checkerboard that welcomes the traditional nucleus of the typical city of the ecuatorian highlands. With the development of this city, isolated neighborhoods are born out of the original urban fabric that expand in the territory, following the main road connections, eventually to fill the internal space with a morphology of contrasts, as each neighborhood or new occupations are structured individually without thinking of a city of integral formation. The longitudinal growth of the city was marked from its beginning by the river Bobo to the north-west and the river Tajamar to the south-east that keep the city within natural limits, which also provide certain environmental and landscape benefits, however in the the last few decades the city has had a significant growth that threatens an unattended and constantly expanding periphery to these environmental resources. We are facing a heterogeneous city, with problems and possibilities and attending to the idea that the city is an unfinished work, integral and sustainable urban regeneration is the basis for a reordering and a new urban approach. It is therefore proposed to study three strategic lines: the existing city, its internal circuits of connection and the adjacent nature. Establishing initial uses in the city, to occupy the predominant urban void and thus to activate the pubic space. Restructure mobility, which will strengthen the use of new peripheral road infrastructures to reduce motorized circuits in the interior, thus promoting the use of bicycles and the creation of pedestrian routes. Finally, environmental resources will again have the value of landscape and ecological wealth producing around the city a green infrastructure that contains growth and is the link of this with the countryside. References Beery, B. (1975) ‘Consecuencias humanas de la urbanización’, Madrid: Pirámide Hernández, A. (2001) ‘La ciudad estructurada’, en Boletín CF+S 15 Calidad de vida urbana: variedad, cohesión y medio ambiente. (http://habitat.aq.upm.es/boletin/n15/aaher.html) Huertas Nadal, D. (2012) ‘I making Heterotopías, laboratorio de estrategias urbanas’, Vitoria: Universidad Francisco Vitoria Lopez de Lucio, R. (2007) ‘Construir ciudad en la periferia’, Madrid: ETS Arquitectura (UPM) Urbanística y ordenación del territorio Solá-Morales, M. (1997) ‘Las formas del crecimiento urbano’, Barcelona:Universitat Politécnica de Catalunya