Grapevine Structure and Function

Jackson, Ronald S.

doi:10.1016/b978-0-12-381468-5.00003-8

Cited by 7 publications

(2 citation statements)

References 268 publications

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“…Environmental conditions have a great influence on bud fertility, and light intensity, temperatures, and water availability are the most important factors. High light intensity and temperatures promote synthesis of cytokinins (CKs) that favor differentiation of the anlagen into inflorescence primordia instead of tendrils [40]. Cytokinins (mainly transported from the roots) are essential for the transition from undifferentiated cells to differentiated primordia and for successive branching.…”

Section: Discussionmentioning

confidence: 99%

Potential and Actual Bud Fruitfulness: A Tool for Predicting and Managing the Yield of Table Grape Varieties

Ferrara

Mazzeo

2021

Agronomy

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Microscopic bud dissection can be used to assess grapevine bud fruitfulness prior to winter pruning and long before actual bud fruitfulness can be measured in the vineyard the following spring. Bud dissections should be performed by qualified and trained personnel because inflorescence primordia are difficult to distinguish in some varieties. In the Puglia region, Southeastern Italy, in 2018 and 2019, potential fruitfulness using bud dissection and actual fruitfulness observed in the vineyard were compared for seventeen table grape varieties. The percentage of fertile buds, the number of inflorescence primordia (IP) per node, and the incidence of primary bud necrosis (PBN) were detected with bud dissection to be used either for managing winter pruning or for predicting yield during the successive season. The data were successively compared with fertile buds and actual bud fruitfulness observed in the vineyard during spring. The table grape varieties examined had similar values of fertile buds and fruitfulness both with bud dissection and in the vineyard. The application of longitudinal sections in bud dissections can be an alternative approach (or can be integrated into traditional cross sections) to distinguish IP in some difficult varieties, but the two techniques can be used together for more repeatable results. The bud dissection technique (with both cross and longitudinal sections) can provide useful insights for viticulturist to help guide winter pruning (intensity of pruning and number of canes) and to predict potential yield.

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Section: Discussionmentioning

confidence: 99%

Potential and Actual Bud Fruitfulness: A Tool for Predicting and Managing the Yield of Table Grape Varieties

Ferrara

Mazzeo

2021

Agronomy

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“…However, counting berries during berry thinning is timeconsuming and is especially difficult for inexperienced farmers. Furthermore, the suitable period for berry thinning is limited to one to two weeks, when there is still enough space among berries to allow unnecessary berries to be cut without hurting those to be kept, before the grapes start to accumulate sugar [6]. For the above reasons, an automatic berry-counting technology is desired by grape farmers.…”

Section: Introductionmentioning

confidence: 99%