[1]杨长琴,刘瑞显,张国伟,等.花铃期干旱对棉纤维素累积及纤维比强度的影响[J].江苏农业学报,2015,(06):1218-1223.[doi:doi:10.3969/j.issn.1000-4440.2015.06.005]
　YANG Chang-qin,LIU Rui-xian,ZHANG Guo-wei,et al.Cellulose accumulation and fiber strength affected by drought during flowering and bolling stage in cotton[J].,2015,(06):1218-1223.[doi:doi:10.3969/j.issn.1000-4440.2015.06.005]
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花铃期干旱对棉纤维素累积及纤维比强度的影响()
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江苏农业学报[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2015年06期
页码:
1218-1223
栏目:
遗传育种·生理生化
出版日期:
2015-12-31

文章信息/Info

Title:
Cellulose accumulation and fiber strength affected by drought during flowering and bolling stage in cotton
作者:
杨长琴1; 刘瑞显1; 张国伟1; 帕尔哈提·买买提2; 娄善伟2
（1.江苏省农业科学院经济作物研究所/农业部长江下游棉花与油菜重点实验室，江苏南京210014;2.国家棉花工程技术研究中心，新疆乌鲁木齐830000）
Author(s):
YANG Chang-qin1; LIU Rui-xian1; ZHANG Guo-wei1; MAMATI Parhat2; LOU Shan-wei2
(1.Institute of Industrial Crops, Jiangsu Academy of Agricultural Sciences/Key Laboratory of Cotton and Rapeseed, Ministry of Agriculture, Nanjing 210014, China;2.National Engineering Research Center for Cotton, Urumqi 830000, China)
关键词:
棉花; 花铃期; 干旱; 纤维素累积; 纤维比强度
Keywords:
cotton (Gossypium hirsutum L.); flowering and bolling stage; drought; cellulose accumulation; fiber strength
分类号:
S562
DOI:
doi:10.3969/j.issn.1000-4440.2015.06.005
文献标志码:
A
摘要:
为揭示干旱影响棉纤维素累积和纤维比强度的生理代谢基础，以美棉33 B为材料，于棉花中部果枝开花时进行干旱处理，正常灌水为对照，研究花铃期干旱对棉纤维发育关键物质的累积和酶活性的影响。结果显示：花铃期干旱处理花后 17～38 d蔗糖和β-1,3-葡聚糖含量均降低，花后0 d干旱处理的蔗糖转化率增加,而β-1,3-葡聚糖转化率降低，纤维素累积速率快但持续期短；花后10 d干旱处理对蔗糖和β-1,3-葡聚糖转化率影响较小，纤维素累积速率慢但持续期长。干旱处理使棉纤维比强度降低，且以花后0 d干旱处理影响较大。干旱处理棉纤维蔗糖合酶活性增加，蔗糖磷酸合酶和β-1,3-葡聚糖酶活性降低。
Abstract:
To evaluate the effects of drought on cellulose accumulation and fiber strength during flowering and bolling stage in cotton, 2-year experiments were conducted on NuCOTN 33B subjected to drought stress at anthesis of middle fruiting branches. Conventional watering was set as control. The results showed that the contents of sucrose and β-1,3-glucan both decreased at 17 to 38 days post anthesis under drought stress. As compared with control, the conversion rate increased for sucrose but decreased for β-1,3-glucan when drought treatment initiated at the right day of anthesis, which as a result, increased cellulose accumulation speed but shortened the duration of cellulose accumulation. The conversion rates of sucrose and β-1,3-glucan were less affected when drought treatment initiated at 10 d after anthesis, which decreased the cellulose accumulation speed but prolonged the duration of cellulose accumulation. The cotton fiber strength decreased at the end of drought stress, and the drop was more at the right day of after anthesis. As drought lasted, the sucrose synthase activity increased, and the activities of sucrose phosphate synthase and β-1,3-glucanase decreased.

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备注/Memo

备注/Memo:
收稿日期：2015-01-15 基金项目：江苏省农业三新工程项目 [SXGC（2014）299]；江苏省农业科技自主创新基金项目[CX(14)2065] 作者简介：杨长琴（1972-），女，江苏仪征人，博士，副研究员，主要从事棉花栽培生理研究。(Tel)025-84390993;(E-mail)ychq2003@qq.com
更新日期/Last Update: 2015-12-31