氯酸钾诱导龙眼成花与内源激素的变化  

KClO_3 Induces Floral Bud Formation in Longan and the Changes of Endogenous Hormones

作　　者：陈清西[1] 李松刚[1] 

机构地区：[1]福建农林大学园艺学院,福州350002

出　　处：《园艺学报》2004年第4期451-455,共5页Acta Horticulturae Sinica

基　　金：福建省重点科技攻关计划(20002086);教育部首批高校骨干教师资助计划项目(2000-65)

摘　　要：用氯酸钾(KClO3)诱导成年龙眼树在4-8月进行花芽分化,开花,并测定内源激素含量的变化。结果表明:经KClO3诱导处理的植株能在60 d左右开花,添加植物细胞分裂素(CTK)比单独使用KClO3的促进成花效果更明显;在成花诱导后,成花母枝叶片中脱落酸(ABA)和玉米素核苷(ZRs)含量在成花诱导期保持在较高的水平,而进入形态建成后逐渐降低,对照树ABA和ZRs含量一直处于较低水平。提出ZRs/GA1+3的比值为1可作为龙眼花芽生理分化的临界指标。Longan (Dimocarpus longan Lour. ) trees were applied with potassium chlorate ( KClO3) in soil from April to August. The changes of endogenous hormones in leaves were determined during floral bud formation. The results were as follows; longan applied with KClO3 was induced floral bud formation and blossomed after about 60 days. The inductive effect was more distinctive when CTK was appended in KClO3. The contents of ABA and ZRs in leaves were in high level during physiological differentiation in treatment B (KClO3 +CTK) and D (KClO3) , and then fell down; however the level was low in control. It was proposed in this paper that the ratio of ZRs/GA1+3 was one could be the critical index of longan floral bud physiological differentiation.

关 键 词：龙眼 氯酸钾 花芽分化 内源激素 

分 类 号：S667.2[农业科学—果树学] S605[农业科学—园艺学]