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

ACTA HORTICULTURAE SINICA ›› 2004, Vol. 31 ›› Issue (4): 451-455.

• 研究论文 • Previous Articles Next Articles

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

Abstract

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

CLC Number:

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

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