اثر تعداد جوانه در بوته بر برخی صفات کمی و کیفی انگور یاقوتی در منطقه سرپل ذهاب

In order to determine the effect of bud number on yield and yield component of Yaghooti grapevine cultivar an experiment was conducted in Sarpol-e-Zehab in ۲۰۱۰. Treatments were different bud number per plant in five levels (۱۶, ۲۴, ۳۲, ۴۰ and ۴۸ buds). This study was conducted based on a randomized complete block design with ۴ replications using ۶ years old plants and in each plot three bushes were evaluated. The results showed that differences between different treatments in some traits such as yield, number of clusters, cluster weight, bud growth, pH and titratable acid were significant. Emerged buds showed a significant decrease by increasing the number of buds maintenance per plant, as for ۴۸ buds per plant bud emergence reduction was about ۱۷%. The number of cluster per plant reached its highest value with ۴۰ and ۴۸ buds on plant and was significant in comparison with the other treatments. The highest yields per plant were obtained on ۳۲, ۴۰ and ۴۸ maintained buds at the plant. The highest cluster weight gained by ۳۲, ۲۴ and ۱۶ maintained buds in each plant. In general, keeping ۳۲ to ۴۰ buds per plant was recommended for Yaghooti grapevine cultivar based on higher yield, cluster weight and other traits.