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ACTA HORTICULTURAE SINICA ›› 2003, Vol. 30 ›› Issue (5): 606-608.

• 研究报告 • Previous Articles     Next Articles

Analysis of Effects of Chemicals on Dormancy - breaking of Toona sinensis

Tu Bingkun;Ding Xiaofei   

  1. (College of Horticulture and Forestry Sciences,Huazhong Agricultural university , Wuhan 430070 , China)
  • Received:2003-04-10 Revised:2003-07-07 Online:2003-10-25 Published:2003-10-25

Abstract: Effects of gibberellic acid (GA3) , 6-benzy laminopurine (6-BA) , thiourea c. p. (NH2) 2CS,zinc sulphate ( ZnSO4 ) , saltpeter ( KNO3 ) on dormancy-breaking of Toona sinensis were investigated in the present research using a design of square , regressive and orthogonal rotation with five factors. Among the chemicals ZnSO4 had the best effect , followed by(NH2) 2CS , GA3 , 6-BA and KNO3 , respectively. The optimum chemical combination for breaking dormancy was 6-BA 20 mg/ L + GA3 180 mg/ L + (NH2) 2CS 1 % + ZnSO4 0. 5 % + KNO3
2% , which could result in sprouting 23 days earlier than the control .

Key words: Toona sinensis (A. Juss) Roem., Dormancy, Sprouting

CLC Number: