氯酸钾诱导龙眼成花与内源激素的变化

园艺学报 ›› 2004, Vol. 31 ›› Issue (4): 451-455.

氯酸钾诱导龙眼成花与内源激素的变化

陈清西；李松刚

(福建农林大学园艺学院，福州350002)

收稿日期:2003-12-10 修回日期:2004-02-18 出版日期:2004-08-25 发布日期:2004-08-25

KCIO₃ Induces Floral Bud Formation in Longan and the Changes of Endoge—nous Hormones

Chen Qingxi and Li Songgang

(Department ofHorticulture，Fujian Agriculture and Forestry University，Fuzhou 350002，China)

Received:2003-12-10 Revised:2004-02-18 Online:2004-08-25 Published:2004-08-25

摘要/Abstract

摘要： 用氯酸钾(KCIO )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KCIO 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KCIO 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／GA 的比值为l可作为龙眼花芽生理分化的临界指标。

关键词: 龙眼, 氯酸钾, 花芽分化, 内源激素

Abstract: Longan(Diraocarpus longan Lour．)trees were applied with potassium chlorate(KCIO₃)in soil from April to August．The changes of endogenous hormones in leaves were determ ined during floral bud form ation．The results were as follows：longan applied with KC101 was induced floral bud formation and blos．somed after about 60 days． The inductive effect was more distinctive when CTK was appended in KC101． The contents of ABA and ZRs in leaves were in high level during physiological differentiation in treatment B(KC10₃+CTK)and D (KC10 )，and then fell down；however the level was low in contro1．It was pro．posed in this paper that the ratio of ZRs／GA1+3 was one could be the critical index of longan floral bud physio．1ogical differentiation．

Key words: Longan, KC103, Floral bud differentiation, Endogenous horm ones

中图分类号:

陈清西;李松刚. 氯酸钾诱导龙眼成花与内源激素的变化[J]. 园艺学报, 2004, 31(4): 451-455.

Chen Qingxi and Li Songgang. KCIO₃ Induces Floral Bud Formation in Longan and the Changes of Endoge—nous Hormones[J]. ACTA HORTICULTURAE SINICA, 2004, 31(4): 451-455.

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