| 氯酸钾对龙眼花芽分化期若干生理指标影响的研究 |
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| 作者姓名： | 卢美英 周歧伟 朱建华 黄景芬 朱建武 何全光黄永敬 徐炯志 黄桂香 |
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| 作者单位： | 广西大学农学院 南宁530005
(卢美英，周歧伟，何全光，黄永敬，徐炯志)，广西农科院 南宁530007
(朱建华)，广西扶绥梁黎华侨林场 扶绥532107
(黄景芬，朱建武)，广西大学农学院 南宁530005(黄桂香) |
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| 基金项目： | 国家攻关项目(国攻2001BA901A27)，广西区科学基金项目(桂科基0236007)，广西科学研究与技术开发项目(桂科攻0322001-1)，广西大学基金项目(XO102038) |
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| 摘 要： | 在石硖龙眼花芽分化时期,根部施用氯酸钾,观察和测定若干生理指标及枝梢抽花穗率、单株产量和果实败育率,结果表明:适量施用氯酸钾,(1)提高了叶片中的叶绿素含量;(2)净光合速率(Pn)在生理分化期低于对照,进入形态分化期则高于对照;(3)可溶性糖、还原糖、可溶性蛋白质含量明显增加;(4)内源乙烯的发生量远远高于对照,出现高峰的快慢因氯酸钾施用量而异,施用量大,则出现高峰快,反之则慢些;(5)过氧化物酶(POD)活性低于对照,而高于喷洒乙烯利等常规促花措施;(6)枝梢抽花穗率略有提高,果实败育率下降,单株产量明显提高。
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| 关 键 词： | 龙眼 氯酸钾 叶绿素 净光合速率 可溶性糖 可溶性蛋白质 内源乙烯 过氧化物酶 |
Effects of Potassium Chlorate on Some Biological Indexes in the Period of Flower Bud Differentiation of Longan |
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| Authors: | Lu Meiying Zhou Qiwei Zhu Jianhua Huang Jinfen Zhu Jianwu He Quanguang Huang Yongjing Xu Jiongzhi Huang Guixiang |
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| Institution: | (1Agric. College, Guangxi Univ.,Nanning 530005, China; 2 Horticultural Research Institute, Guangxi Academy of Agricultural Science, Nanning 530007, China; 3Quli Huaqiao Forestry Centre, Fushui 532107, China) |
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| Abstract: | Potassium chlorate was applied to ''Shixia''longan trees as soil drench in the period of flower bud differentiation, some biological indexes were researched. The conclusion was: (1)The contents of CHL was induced.(2)Net photosynthetic rate was reduced in period of physiological differentiation,and was raised in period of morphological differentiation. (3)Contents of soluble sugar, reductive sugar, and soluble protein were increased in evidence. (4)Contents of endogenetic ethylene (ETH) outclassesed CK, the speed of ETH peak coming depends potassium chlorate dosage, the bigger dosage the sooner speed. (5) Activity of POD enzyme was under then CK, but higher than traditional promoting flower measures for example spraying ETH.(6)The rate of flower shoot was a little higher then CK, the rate of panicles with aborted fruits was significantly lower, and the yield per tree was significantly higher then CK. |
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| Keywords: | Longan Potassium chlorate CHL Net photosynthetic rate Soluble sugar Soluble protein Endogenetic ethylene POD |
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