8Yang You-Ming,Xu Chu-Nian,Wang Bao-Min1 and Jia Jun-Zhen.Effects of plant growth regulators on secondary wall thickening of cotton fibres.Plant Growth Regulation.2001,35:233-237.
9J.L.Saenz.Changes in carhydrate and ribulose bisphosphate carboxylase-oxygenase ications of different a mounts of nitrogen fertilizer.J Hotic.sci,1997,45:209-226.
10Welling,A.,P.Kailkuranta,and P.Rinne..Photoperiodic induction of dormancy and freezing tolerance in Betula pubescens.Involvement of ABA and dehydrins.Physiol.Plant.,1977,100:119-125.