Effects of different plant growth regulators on branching and growth characteristics of apple seedlings
[Objective] This study investigated the effect of three different plant growth regulators including Promalin,KT-30 and Chouzhibao on the growth characteristics and branching of apple seedlings to provide basis for development of branching promoting technology.[Method] Seedlings of'Nagafu No.2','T337',and'Bredia rotundifolia Y.C.Liu et C.H.Ou'with the height of 90 cm were sprayed with promalin (1 000 mg/kg),KT-30 (100 mg/kg),and Chouzhibao cream (150-200 buds per gram) at 70 cm new tip.The differences in number of branches,branch length,branch height,weight of above-ground part and growth index were measured and analyzed using water as control.[Result] Promalin,KT-30 and Chouzhibao promoted new shoots and the number of branches was significantly higher than CK,which was beneficial to formation of production trees.Promalin was superior to KT-30 and Chouzhibao with better seedling height,diameter,effective branch number,branch height and root growth.KT-30 had no significant difference in branches from Chouzhibao,but the plant height and root growth of KT-30 were better.[Conclusion] Promalin promoted the branching and growth of apple seedlings and can be widely used.
apple nursery stockspromalinKT-30Chouzhibaobranching techology
NETL
NSTL
万方数据
维普
