棉花； 打顶； 倒四叶； 内源激素； 产量； 品质," /> 棉花； 打顶； 倒四叶； 内源激素； 产量； 品质,"/> 棉花打顶后倒四叶内激素变化对棉花产量和品质的影响
干旱区研究

干旱区研究 ›› 2014, Vol. 31 ›› Issue (1): 111-117.

• 生物环境 • 上一篇    下一篇

棉花打顶后倒四叶内激素变化对棉花产量和品质的影响

李莉1，田长彦1，陈冠文2，李中军3   

  1. 1. 中国科学院新疆生态与地理研究所，中国科学院绿洲生态与荒漠环境重点实验室，新疆 乌鲁木齐 830011；
    2. 新疆农垦科学院，新疆 石河子 832000； 3. 新疆农二师30团2连，新疆 库尔勒 841006
  • 收稿日期:2013-08-23 修回日期:2013-09-06 出版日期:2014-01-15 发布日期:2014-02-28
  • 作者简介:李莉（1975-）女，副研究员，博士，主要从事棉花栽培、生理及土壤肥料的研究.E-mail: lili@ms.xjb.ac.cn
  • 基金资助:

    新疆科技支疆项目（200840102－08）；国家自然科学基金项目（31201681）资助

Effect of Hormone Change in Reciprocal Fourth Leaf on Cotton Yield and Quality after Topping

LI Li，TIAN Chang-yan,CHEN Guan-wen，LI Zhong-jun   

  1. 1.Key Laboratory of Oasis Ecology and Desert Environment,Xinjiang Institute of Ecology and Geography, 
    Chinases Academy of Sciences, Urumqi 830011, China; 2.Xinjiang Academy of Farming Science, Shihezi 832000, China;
    3.Farm 2, Regiment 30, Division 2, Xinjiang Crops of Production and Construction, Korla 841006, Xinjiang, China
  • Received:2013-08-23 Revised:2013-09-06 Published:2014-01-15 Online:2014-02-28

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摘要： 通过田间小区实验，研究棉花打顶后倒四叶内源激素的变化以及打顶对棉花产量和品质的影响。结果表明：① 打顶在一定时间内降低了生长素(IAA)、细胞分裂素(CTK)、赤霉素(GA3)和脱落酸(ABA)的比值，使得ABA浓度显著增加。② 打顶后，棉花顶部涂抹萘乙酸（NAA），增加了倒四叶中IAA、CTK、GA3与ABA的比值，并维持ABA的含量。③ 打顶后，倒四叶中叶绿素含量和病情指数显著高于不打顶处理，外用NAA可减缓叶片衰老的进程。④ 打顶措施有利于减少棉铃的脱落率，结铃主要分布在下部和中部铃围上，但在结铃率和上部铃的分布上优势不显著。⑤ 打顶、不打顶和打顶后涂抹NAA的3个处理在产量和品质上差异不显著，但品种、施肥、管理、外施激素和抑制剂等对各处理都具备增产的潜力。

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Abstract: In this study, the change of endogenous hormones in reciprocal fourth leaf of cotton plant after topping was researched by carrying out the plot experiments, and the effect of topping on cotton yield and quality was analyzed. The results are as follows: ① After topping, the ratios of IAA, CTK, GA3 and ABA in reciprocal fourth leaf of cotton plant within a certain period of time were decreased, and the ABA concentration was significantly increased; ② After topping, the ratios of IAA, CTK, GA3 and ABA in reciprocal fourth leaf of cotton plant could be increased by daubing NAA, and the content of ABA in reciprocal fourth leaf of cotton plant could be maintained; ③ After topping, the content of chlorophyll and the disease index of reciprocal fourth leaf of cotton plant were significantly higher than that without topping, and the ageing process of cotton leaves could be slowed down by using NAA externally; ④ The exfoliation rates of cotton buds and bolls could be reduced after topping. The cotton bolls and buds grew mainly on the lower and central parts of cotton stem, but the preponderance of boll setting and bolls on upper branches was not significant; ⑤ The difference of cotton yield and quality among the situations after topping, without topping and by daubing NAA after topping was not significant, but three was a potentiality to increase cotton yield under the treatments of taking improved variety, applying fertilizer, hormone and inhibitor, enhancing management, etc.

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