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作物学报 ›› 2016, Vol. 42 ›› Issue (01): 93-103.doi: 10.3724/SP.J.1006.2016.00093

• 耕作栽培·生理生化 • 上一篇    下一篇

烯效唑干拌种对甜荞茎秆抗倒性能的影响

刘星贝1,**,汪灿1,**,胡丹1,杨浩1,佘恒志1,阮仁武1,2,吴东倩1,*,易泽林1,2,*   

  1. 1 西南大学农学与生物科技学院, 重庆 400716; 2 重庆市荞麦产业体系创新团队, 重庆 400716
  • 收稿日期:2015-03-27 修回日期:2015-09-06 出版日期:2016-01-12 网络出版日期:2015-10-08
  • 通讯作者: 易泽林, E-mail: yzlin1969@126.com; 吴东倩, E-mail: 5042347111@qq.com
  • 基金资助:

    本研究由中央高校基本业务费专项资金(XDJK2015B010), 重庆市荞麦产业体系创新团队建设项目。

Effects of Seed Dressing with Uniconazole Powder on Lodging Resistance of Culm in Common Buckwheat

LIU Xing-Bei1,**,WANG Can1,**,HU Dan1,YANG Hao1,SHE Heng-Zhi1,RUAN Ren-Wu1,2,WU Dong-Qian1,*,YI Ze-Lin1,2,*   

  1. 1 College of Agronomy and Biotechnology, Southwest University, Chongqing 400716, China; 2 Innovation Team of Chongqing Buckwheat Industry System, Chongqing 400716, China
  • Received:2015-03-27 Revised:2015-09-06 Published:2016-01-12 Published online:2015-10-08
  • Contact: 易泽林, E-mail: yzlin1969@126.com; 吴东倩, E-mail: 5042347111@qq.com
  • Supported by:

    This study was supported by the Fundamental Research Funds for the Central Universities (XDJK2015B010), Chongqing Buckwheat Industry System Innovation Team (CQCYT2011001) and Chongqing Key Application Development Project of Science and Technology Plan (cstc2013yykfb0118).

摘要:

以中抗倒伏甜荞品种宁荞1号为材料,设置0100200300 mg kg1烯效唑干拌种处理,研究倒伏习性、产量、茎秆抗折力、倒伏指数、茎秆形态特性和茎秆解剖结构的变化,探讨烯效唑干拌种对甜荞茎秆抗倒性能的影响。结果表明,烯效唑干拌种对甜荞茎秆抗倒性能有显著影响。随烯效唑干拌种浓度的增加,产量、茎秆抗折力、第2节间粗、第2节间干重、节间充实度、机械组织层数、机械组织厚度、茎壁厚度、维管束数目和维管束面积先增加后降低,倒伏率、倒伏指数、株高、茎秆重心高度、茎秆鲜重和第2节间长先降低后增加。当烯效唑干拌种浓度为200 mg kg1时,能有效优化甜荞茎秆结构,改善茎秆质量,减小倒伏风险,增加产量。

关键词: 甜荞, 烯效唑, 抗倒性能, 形态特性, 解剖结构

Abstract:

Lodging is one of the important factors affecting the yield and quality of common buckwheat (Fagopyrum esculentum M.) worldwide. Ningqiao 1, a cultivar of common buckwheat with moderate lodging resistance was used in this study to investigate the dynamic changes of lodging behavior, yield, culm snapping resistance, lodging index, culm morphological characteristics and culm anatomical structure seed dressing with uniconazole powder(0, 100, 200, and 300 mg kg-1). The results indicated that seed dressing with uniconazole powder had significantly effects on the lodging resistance of culm in common buckwheat. With the increase of uniconazole powder concentration, the yield, culm snapping resistance, diameter of the 2nd internode, dry weight of the 2nd internode, filling degree, mechanical tissue layer number, mechanical tissue thickness, culm wall thickness, vascular bundle number, and vascular bundle area showed an increased-decreased trend, whereas, the lodging percentage, lodging index, plant height, culm gravity height, culm fresh weight, and length of the 2nd internode showed an decreased-increased trend. In this case, the treatment of seed dressing with 200mg kg-1 uniconazole powder could optimize the culm structure, improve the culm quality, reduce the lodging risk, and enhance the yield of common buckwheat.

Key words: Common buckwheat, Uniconazole, Lodging resistance, Morphological characteristics, Anatomical structure

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