INFLUENCE OF GA3 ON GROWTH AND DEVELOPMENT OF ´THOMPSON SEEDLESS´ GRAPES (VITIS VINIFERA L.)

2006 ◽  
pp. 239-242 ◽  
Author(s):  
V.N. Gowda ◽  
S. Shyamalamma ◽  
R.B Kannolli
Keyword(s):  
Vitis Vinifera ◽  
Growth And Development ◽  
Vitis Vinifera L ◽  
Thompson Seedless ◽  
Seedless Grapes

scholarly journals Genome-Wide Characterization and Expression Profiling of GASA Genes during Different Stages of Seed Development in Grapevine (Vitis vinifera L.) Predict Their Involvement in Seed Development

2020 ◽  
Vol 21 (3) ◽  
pp. 1088 ◽  
Author(s):  
Bilal Ahmad ◽  
Jin Yao ◽  
Songlin Zhang ◽  
Xingmei Li ◽  
Xiuming Zhang ◽  
...  
Keyword(s):  
Vitis Vinifera ◽  
Gene Family ◽  
Seed Development ◽  
Expression Profiling ◽  
Promoter Analysis ◽  
Growth And Development ◽  
Functional Characterization ◽  
Vitis Vinifera L ◽  
Thompson Seedless ◽  
Genome Wide

Members of the plant-specific GASA (gibberellic acid-stimulated Arabidopsis) gene family have multiple potential roles in plant growth and development, particularly in flower induction and seed development. However, limited information is available about the functions of these genes in fruit plants, particularly in grapes. We identified 14 GASA genes in grapevine (Vitis vinifera L.) and performed comprehensive bioinformatics and expression analyses. In the bioinformatics analysis, the locations of genes on chromosomes, physiochemical properties of proteins, protein structure, and subcellular positions were described. We evaluated GASA proteins in terms of domain structure, exon-intron distribution, motif arrangements, promoter analysis, phylogenetic, and evolutionary history. According to the results, the GASA domain is conserved in all proteins and the proteins are divided into three well-conserved subgroups. Synteny analysis proposed that segmental and tandem duplication have played a role in the expansion of the GASA gene family in grapes, and duplicated gene pairs have negative selection pressure. Most of the proteins were predicted to be in the extracellular region, chloroplasts, and the vacuole. In silico promoter analysis suggested that the GASA genes may influence different hormone signaling pathways and stress-related mechanisms. Additionally, we performed a comparison of the expression between seedless (Thompson seedless) and seeded (Red globe) cultivars in different plant parts, including the ovule during different stages of development. Furthermore, some genes were differentially expressed in different tissues, signifying their role in grapevine growth and development. Several genes (VvGASA2 and 7) showed different expression levels in later phases of seed development in Red globe and Thompson seedless, suggesting their involvement in seed development. Our study presents the first genome-wide identification and expression profiling of grapevine GASA genes and provides the basis for functional characterization of GASA genes in grapes. We surmise that this information may provide new potential resources for the molecular breeding of grapes.

scholarly journals Effects of Natural Hail on the Growth, Physiological Characteristics, Yield, and Quality of Vitis vinifera L. cv. Thompson Seedless under Mediterranean Growing Conditions

Agronomy ◽  
2019 ◽  
Vol 9 (4) ◽  
pp. 197 ◽  
Author(s):  
Despoina G. Petoumenou ◽  
Katerina Biniari ◽  
Efstratios Xyrafis ◽  
Dimitrios Mavronasios ◽  
Ioannis Daskalakis ◽  
...  
Keyword(s):  
Vitis Vinifera ◽  
Leaf Area ◽  
Leaf Gas Exchange ◽  
Natural Phenomenon ◽  
Vitis Vinifera L ◽  
Thompson Seedless ◽  
Berry Quality ◽  
Soluble Solid ◽  
Growing Conditions ◽  
Grape Varieties

Hailstorms are typically localized events, and very little is known about their effect on crops. The objective of this study was to examine the physiological and vine performance responses to natural hail, registered four weeks after full bloom, of field-grown Thompson seedless (Vitis vinifera L.) grapevines, one of the most important table grape varieties cultivated in Greece and especially in the Corinthian region in northeastern Peloponnese. Leaf gas exchange, vegetative growth, vine balance indices, cane wood reserves, yield components, and fruit chemical composition were recorded from hail-damaged vines and compared with control vines. Visibly, the extent of the hailstorm damage was great enough to injure or remove leaves as well as cause partial stem bruising and partial injury or total cracking of berries. Our results indicated that natural hail did not affect leaf photosynthesis, berry weight, total acidity, and cane wood reserves but significantly reduced the total leaf area, yield, and the total phenolics of berries at harvest. At the same time, hail-damaged vines increased the leaf area of lateral canes and presented a higher total soluble solid (TSS) accumulation, while no effect on the next year’s fertility was registered. The present work is the first attempt to enhance our understanding of the vegetative yield, berry quality, and physiological responses of grapevines to natural hail, which is an extreme and complex natural phenomenon that is likely to increase due to climate change.

scholarly journals Crescimento de bagas de cultivares de uvas apirênicas tratadas com CPPU e GA3

2003 ◽  
Vol 27 (6) ◽  
pp. 1253-1259 ◽  
Author(s):  
Valtemir Gonçalves Ribeiro ◽  
João Alexio Scarpare Filho
Keyword(s):  
Vitis Vinifera ◽  
Vitis Vinifera L ◽  
Thompson Seedless

As cultivares de uvas apirênicas (Vitis vinifera L.), via de regra, possuem bagas de tamanhos reduzidos, necessitando de ajustes no manejo para a melhoria da qualidade dos cachos, sendo a aplicação de reguladores de crescimento um dos tratamentos mais eficazes. Objetivou-se com o presente trabalho avaliar os efeitos do forchlorfenuron (CPPU: 0 e 10 mgL-1) combinado ao ácido giberélico (GA3: 0, 25, 50, 75 e 100 mgL-1) durante o primeiro ciclo de produção das cultivares Centennial Seedless, Flame Seedless e Thompson Seedless. As características avaliadas foram o comprimento, diâmetro e peso de bagas. Para a 'Centennial Seedless', maiores comprimentos, diâmetro e peso de bagas foram obtidos com 100 mgL-1 de GA3; e a concentração de 100 mgL-1 de GA3 adicionada a 10 mgL-1 de CPPU foi a mais responsiva para a 'Flame Seedless' e 'Thompson Seedless', observando-se atrasos na maturação, em termos de sólidos solúveis totais, para todas as cultivares.

The metacaspase gene family of Vitis vinifera L.: Characterization and differential expression during ovule abortion in stenospermocarpic seedless grapes

Gene ◽  
2013 ◽  
Vol 528 (2) ◽  
pp. 267-276 ◽  
Author(s):  
Chaohong Zhang ◽  
Peijie Gong ◽  
Rong Wei ◽  
Shuxiu Li ◽  
Xutong Zhang ◽  
...  
Keyword(s):  
Vitis Vinifera ◽  
Gene Family ◽  
Differential Expression ◽  
Vitis Vinifera L ◽  
Ovule Abortion ◽  
Seedless Grapes

scholarly journals Potential Abscission Agents for Raisin, Table, and Wine Grapes

HortScience ◽  
2007 ◽  
Vol 42 (7) ◽  
pp. 1626-1630 ◽  
Author(s):  
Matthew W. Fidelibus ◽  
Kimberley A. Cathline ◽  
Jacqueline K. Burns
Keyword(s):  
Vitis Vinifera ◽  
Methyl Jasmonate ◽  
Linear Function ◽  
Soluble Solids ◽  
Cabernet Sauvignon ◽  
Wine Grapes ◽  
Thompson Seedless ◽  
Fruit Drop ◽  
Harvesting Method ◽  
Seedless Grapes

Effective abscission agents that decrease fruit detachment force (FDF) are sought by the California raisin industry to improve the continuous tray mechanical harvesting method. Such agents might also enable mechanical harvest of table and wine grapes (Vitis vinifera L.), but few agents are known to be effective for grape. Thus, methyl jasmonate (MeJA) and six other compounds known to stimulate abscission of other fruits were screened for their ability to reduce FDF of mature ‘Thompson Seedless’ grapes. Most compounds tested reduced FDF to some extent, but MeJA was particularly effective. Solutions containing between 45 and 4500 ppm MeJA reduced FDF by at least 50% to 85% compared with nontreated fruits. Application of 2250 and 4500 ppm MeJA to ‘Thompson Seedless’ vines caused 25% to 50% fruit drop, respectively, within 10 d after treatment (DAT). The efficacy of MeJA was verified in a second experiment in which solutions of 0, 1125, 2250, or 4500 ppm MeJA were applied to clusters of ‘Crimson Seedless’ grapes; at 14 DAT, FDF declined as a linear function of MeJA applied. The grapes did not abscise, but berries treated with 2250 to 4500 ppm MeJA had slightly lower soluble solids than nontreated fruits. Solutions of 0 or 4500 ppm MeJA applied to clusters of ‘Cabernet Sauvignon’ and ‘Merlot’ grapevines reduced FDF by 66% and 75%, respectively. Fruit drop was estimated to be less than 10%. Thus, a solution containing up to 4500 ppm MeJA may be an effective abscission agent to facilitate mechanical harvest of ‘Cabernet Sauvignon’ or ‘Merlot’.

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