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茭白生育过程中地上各部位内源激素的含量变化
引用本文:江解增,邱届娟,韩秀芹,曹碚生,朱庆森.茭白生育过程中地上各部位内源激素的含量变化[J].武汉植物学研究,2004,22(3):245-250.
作者姓名:江解增  邱届娟  韩秀芹  曹碚生  朱庆森
作者单位:扬州大学农学院,扬州,225009
基金项目:江苏省重点攻关项目(BE2001322,BE2002304)资助,江苏省农业三项工程项目[S(01)54]资助。
摘    要:以两个茭白品种为试材,测定了植株茎蘖生育过程中地上各部位主要激素及肉质茎膨大过程中的干重变化。结果显示:茭白植株生育过程中各部位的激素以玉米素及玉米素核苷(Z ZR)的含量最高,生长素(IAA)其次,赤霉素(GA3)和脱落酸(ABA)含量很低;在各部位间总体以茎尖最高,叶鞘其次,叶片最低。其中Z ZR含量在肉质茎膨大前即已明显上升,膨大开始后显著下降;IAA含量在肉质茎膨大后期至末期才出现下降;叶片内ABA含量在肉质茎膨大前即开始上升,叶鞘内ABA.含量在肉质茎膨大后期上升,茎尖内则无明显变化;各部位GA2含量在整个生育期内无明显变化。肉质茎的干重增加也与其Z ZR含量下降密切相关。认为Z ZR是刺激肉质茎膨大的关键激素。品种间差异表现为各部位激素含量及其变化有一定差异,尤其是肉质茎膨大阶段差异比较明显。

关 键 词:茭白  生育过程  内源激素
文章编号:1000-470X(2004)03-0245-06

Changes of Endogenous Hormone Contents of Different Parts during Development of Water Bamboo (Zizania latifolia)
JIANG Jie-Zeng,QIU Jie-Juan,HAN Xiu-Qin,CAO Bei-Sheng,ZHU Qing-Sen.Changes of Endogenous Hormone Contents of Different Parts during Development of Water Bamboo (Zizania latifolia)[J].Journal of Wuhan Botanical Research,2004,22(3):245-250.
Authors:JIANG Jie-Zeng  QIU Jie-Juan  HAN Xiu-Qin  CAO Bei-Sheng  ZHU Qing-Sen
Abstract:The changes of endogenous hormone contents in leaves and stems of two cultivars of the water bamboo (Zizania latifolia) during growth and development were studied, and dry weight of swollen culms were also measured. The results showed that the content of Z+ZR was highest at different developmental stages and parts, followed with IAA. The contents of GA3 and ABA were very low. Generally levels of hormones were highest in culm, followed by sheathes and leaves the lowest.The content of Z+ZR rose obviously and descended rapidly before and when gall started on swelling, respectively. The content of IAA in leaves was descending from anaphase to telophase of gall's swelling. The content of ABA in leaves was raised just before gall's swelling and that in sheathes was raised in anaphase of the gall' swelling, but there's no visible change in culm. There was no obvious change of GA3 content in all parts and during growth and development. Very close relationship between increase of dry weight of swollen culm and the content of Z+ZR was found. It is concluded that Z+ZR was the key hormone in gall's shaping. The differences in hormone contents of every part and its changes were observed between cultivars, especially in the swelling period of gall.
Keywords:Water bamboo ( Zizania latifolia)  Developmental stages  Endogenous hormone
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