Custom individual error bars excel 20186/21/2023 ![]() In subtropical areas, dormancy release is a problem for several perennial crops, including grapevines (Sudawan et al., 2016). ![]() Insufficient chilling hour accumulation contributes to extended dormancy and uneven or prolonged bud break, which impacts flowering time (Mathiason, et al., 2009 Keller, 2015 Melke, 2015). vinifera cultivars require 50–400 hours of chilling for uniform bud break (Dookoozlian, 1999 Londo and Johnson, 2014 Anzanello et al., 2018). A minimum of 200 hours chilling was necessary for homogeneous bud break of V. Chilling requirements for grapevine bud break are genotype-specific within species, varying from 250 to 2250 hours ( Londo and Johnson, 2014). Sufficient grapevine chilling following leaf drop at temperatures between 0☌ and 10☌ results in dormancy release and uniform bud break with increasing temperatures in spring ( Dokoozlian, 1999 Andreini et al., 2009 Mathiason et al., 2009 Mohamed and El-Sese, 2009 Avenant and Avenant, 2014 Alvarez et al., 2018 Anzanello, et al., 2018).
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