WebNov 6, 2015 · In contrast, the bud breaking rates of lateral flower buds were much less affected when the chilling was initiated, and >70% bud breaking occurred when chilling accumulated for longer than 900 h irrespective of the timing of the chilling treatment (Figure 5a). These results, again, suggested that chilling provided earlier (November–December ... WebDec 5, 2024 · UCCE Viticulture experts from California state that most grapes need only about 150 chilling hours to budburst, while Dokoozlian found in his study that a minimum exposure of 200 hours is required to achieve commercially acceptable levels of budbreak of Perlette (Vitis vinifera L.) grapevine cuttings.
Chilling requirement - Wikipedia
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Frontiers Tradeoffs between chilling and forcing in …
WebFeb 11, 2024 · Bud break timing in peach [ Prunus persica (L.) Batsch] is determined by the sequential fulfillment of a chilling requirement (CR) and a heat requirement (HR) for development. Genotypic variation in CR has been well characterized in peach. WebJun 23, 2024 · Chilling and forcing are two of the main mechanisms that drive temperate fruit development, namely dormancy and active plant development. Given the strong sensitivity of these crops to air temperature and the foreseeable warming under future climates, it becomes imperative to analyze climate change impacts for fruit trees. WebJun 17, 2024 · Insufficient chilling increased cumulative forcing needed for budburst but only extreme chilling deficiency (< 700 weighted chilling hours) caused abnormal budburst and growth, including reduced leaf and shoot expansion, early and erratic budburst in lower branches and stems, and even lack of budburst after 7 months in optimal growing … maslow need hierarchy pyramid