Characteristics of Bud Necrosis and Formation of Inflorescence Primordium in Young and Adult ‘Shine Muscat’ Grapevines

This study aimed to investigate why empty branches occur in ‘Shine Muscat’ grapevines. Moreover, it also understand the bud characteristics of grapevines by examining development, occurrence various necrosis types and inflorescence primordium formation. The rate formation was highest September for young vines October adult vines. In contrast, rather low March following year. blooming during flowering period year higher than all investigation periods. is likely because primordia are continuously formed accessory buds environmental dormancy. However, several were found both According location node, rates primary high, 1st node. Therefore, medium pruning could increase grape yields. Leaves should be pruned up nodes before after 5th which has a relatively high Monthly comparisons showed that increased dormancy period, lower compared gibberellic acid (GA)-treated There no significant differences among branch lengths determined length GA-treated at least 80 cm order addition, if thickness either too thick or thin, negatively affects primordium. advantageous maintain between 3rd 4th 8.5–11.5 mm 10.0–11.5 Furthermore, longer thicker more