苹果梨花芽分化期几种酶活性的变化  

The Changes of Enzymes Activity during the Flower Bud Differentiation of ‘Pingguoli’

作　　者：李秉真[1] 李雄[1] 孙庆林[1] 张建华[1] 马青枝[1] 

机构地区：[1]内蒙古农牧学院生物工程系,呼和浩特010018

出　　处：《园艺学报》2001年第2期159-160,共2页Acta Horticulturae Sinica

基　　金：内蒙古自然科学基金资助项目 !( 96 10E38)

摘　　要：对‘苹果梨’花芽分化各时期叶片中过氧化物酶 (POD)、吲哚乙酸 (IAA)氧化酶、蔗糖酶和过氧化氢酶 (CAT)活性进行研究 ,前三者在花芽分化临界期 (7月 2 3日 )达高值 ,而后者处于低值 ;在花蕾、花萼分化期CAT活性增强 ,蔗糖酶、IAA氧化酶、POD活性降低 ;花瓣、雄蕊、雌蕊分化期POD、IAA氧化酶活性增加 ,蔗糖酶变化不大 。The change of peroxidases(POD),catalase(CAT),IAAoxidase and sucrase activity in leaves during flower bud differentiation of“Pingguoli”was studied.The results showed that POD,IAAoxidase and sucrase activity were high,but CAT activity was low in the critical period of flower bud differentiation(23,July).CAT activity increased,sucrase activity decreased and IAAoxidase,POD activity decreased little during alabastrum,calyx differen tiation. POD,IAAoxidase activity gradually increased,sucrase activity didn’t change significantly,CAT activity declined to the lowest during petal,stamen,pistil differentiation.

关 键 词：梨 苹果梨 花芽分化 酶活性 

分 类 号：S661.2[农业科学—果树学]