新疆农业科学2017，Vol.54Issue(8)：1402-1413,12.DOI:10.6048/j.issn.1001-4330.2017.08.004
新疆滴灌棉花打顶后激素分布动态与响应特征研究
Research on Hormone Dynamic Distribution and Responsive Characteristics of Drip Irrigation Cotton after Topping in Xinjiang
摘要
Abstract
[Objective] To research the influence on root characters,development of overground organ and distribution of five hormones of different varieties of topped cotton watered by drip irrigation in southern Xinjiang;To reveal the growth and development law and hormone distributional difference of cotton in different varieties after topping under the cultivation condition of drip irrigation;To provide scientific basis for high yield and ultra-high yield cultivation of Southern Xinjiang's cotton watered by drip irrigation and whole-journey dynamic quantization regulating techniques for cotton cultivation.[Method] Selecting Xinluzhong 42 as tested variety,using the technology of drip irrigation and planting topping experiment in the southern Xinjiang.[Result] Research results:(1) The content ratio of IAA of root tip after topping for 6 hours,12 hours and 30 days respectively increases by 3.9 ng/mL,4.7 ng/mL,28.63 ng/mL;the content of ETH of root tip with non-topping is always higher than that of topping,there is no obvious change in the content of ETH of root tip after topping for 3 hours,the content of ETH of root tip with non-topping increases by 47 ng/mL;the content of ETH of root tip after topping for 30 days decreases by 72.99 ng/mL,the content of ETH of root tip with non-topping increases by 70.95 ng/mL;the content of IAA of root tip and CTK of the top fourth leaf af ter topping for 3 hours decreases,the content of IAA of root tip and CTK of the top fourth leaf with non-topping relatively increases by 1.7 μg/L and 0.5 μg/L;the content of ABA of root tip after topping for 3 hours decreases by 0.1 μg/L,while there is no obvious change in the content of ABA of root tip with non-topping;the content of ABA of root tip after topping for 6 hours decreases hy 0.3 μg/L,the content of ABA of root tip with non-topping increases by 1 μg/L;the content difference of the ETH of tip and GA of the top fourth leaf after topping for 3,6,12 hours and 30 days and that of non-topping shows no obvious regularity.(2) The content difference of the ETH of tip and IAA of the top fourth leaf after topping for 3,6,12 hours and 30 days and that of non-topping shows no obvious regularity.The content of ETH of tip after topping for 6 hours in creases by 154 ng/mL,and that of non-topping decreases by 43 ng/mL;the content of ETH of the top fourth leaf after topping is always higher than that of non-topping;the content difference of the tip and CTK of the top fourth leaf after topping for 3,6,12 hours and 30 days and that of non-topping shows no obvious regular ity;the content of the tip and ABA of the top fourth leaf after topping for 3 hours and 6 hours is higher than that of non-topping,the content of ABA of the top fourth leaf after topping for 6 hours increases by 27.4 μg/L,and that of no-topping decreases by 29.1 μg/L;the content of GA of the tip after topping for 3 hours decreases by 16.8 pmoL/L,while that of non-topping does not decrease,the content of GA of the tip with non -topping is always obviously higher than that of topping.(3) The agronomic characters,yield and quality of the plants and the distribution of nutrients,such as N,P,K,have certain influence on it.[Conclusion] Cotton topping helps to reduce the inhibition of hormone levels,enhances the chlorophyll content of leaves,facilitates the growth and development of the plant,boosts production,but conducts no significant influence on quality.关键词
滴灌棉花/打顶/激素分布/响应特征/动态变化Key words
drip irrigation cotton/topping/hormone distribution/responsive characteristics/dynamic change分类
农业科技引用本文复制引用
吐尔逊江·买买提,阿塔吾拉,郭江平,梁亚军,艾先涛,龚兆龙,郑巨云,田长彦..新疆滴灌棉花打顶后激素分布动态与响应特征研究[J].新疆农业科学,2017,54(8):1402-1413,12.基金项目
自治区科技厅科研院所创新与发展专项“打顶棉花早衰机理研究”(2012024) （2012024）
自治区科技厅高技术发展专项“棉花超高产群体质量调控栽培关键技术研究与示范”(20131110)Special Innovation and Development Project of Scientific Research Institutions of Science & Technology Department of Xinjiang Uygur Autonomous Region (2012024) and Special High Tech Development Project of Science & Technology Department of Xinjiang Uygur Autonomous Region (20131110) （20131110）
