Journal of Integrative Agriculture ›› 2012, Vol. 12 ›› Issue (12): 2013-2019.DOI: 10.1016/S1671-2927(00)8738

• 论文 • 上一篇    下一篇

Relationship Between the N Concentration of the Leaf Subtending Boll and the Cotton Fiber Quality

 WANG You-hua, ZHAO Xin-hua, CHEN Bing-lin, GAO Xiang-bin , ZHOU Zhi-guo   

  1. 1.College of Agriculture, Nanjing Agricultural University, Nanjing 210095, P.R.China
    2.Cotton Research Institute, Chinese Academy of Agricultural Sciences, Anyang 2633206, P.R.China
  • 收稿日期:2012-03-26 出版日期:2012-12-01 发布日期:2012-12-18
  • 通讯作者: Correspondence ZHOU Zhi-guo, Tel: +86-25-84396129, Fax: +86-25-84396813, E-mail: giscott@njau.edu.cn
  • 基金资助:

    This research was funded by the National Natural Science Foundation of China (30771279) and the Specialized Research Funds for the Doctoral Program of Higher Education, China (20080307001).

Relationship Between the N Concentration of the Leaf Subtending Boll and the Cotton Fiber Quality

 WANG You-hua, ZHAO Xin-hua, CHEN Bing-lin, GAO Xiang-bin , ZHOU Zhi-guo   

  1. 1.College of Agriculture, Nanjing Agricultural University, Nanjing 210095, P.R.China
    2.Cotton Research Institute, Chinese Academy of Agricultural Sciences, Anyang 2633206, P.R.China
  • Received:2012-03-26 Online:2012-12-01 Published:2012-12-18
  • Contact: Correspondence ZHOU Zhi-guo, Tel: +86-25-84396129, Fax: +86-25-84396813, E-mail: giscott@njau.edu.cn
  • Supported by:

    This research was funded by the National Natural Science Foundation of China (30771279) and the Specialized Research Funds for the Doctoral Program of Higher Education, China (20080307001).

摘要: This experiments were conducted in Nanjing (118º50´E, 32º02´N) and Xuzhou (117°11´E, 34°15´N), Jiangsu Province, China, to study the response of fiber quality to the N concentration of the leaf subtending boll in cotton (Gossypium hirsutum L.). Results suggested that the N dilution curve of the leaf subtending boll can accurately indicate the stagespecific plant N status for fiber development. Fiber strength is likely to be the most variable fiber quality index responding to the leaf N variation which is different in cultivars. Fiber length was the most stable index among strength, length, micronaire, and elongation. There existed an optimum leaf N concentration for fiber strength development in each stage. The optimum leaf N regression curve was very close to the N dilution curve in the middle positional fruiting branches under the 240 kg N ha-1 soil N application rate.

关键词: cotton, fiber quality, leaf N concentration, cellulose

Abstract: This experiments were conducted in Nanjing (118º50´E, 32º02´N) and Xuzhou (117°11´E, 34°15´N), Jiangsu Province, China, to study the response of fiber quality to the N concentration of the leaf subtending boll in cotton (Gossypium hirsutum L.). Results suggested that the N dilution curve of the leaf subtending boll can accurately indicate the stagespecific plant N status for fiber development. Fiber strength is likely to be the most variable fiber quality index responding to the leaf N variation which is different in cultivars. Fiber length was the most stable index among strength, length, micronaire, and elongation. There existed an optimum leaf N concentration for fiber strength development in each stage. The optimum leaf N regression curve was very close to the N dilution curve in the middle positional fruiting branches under the 240 kg N ha-1 soil N application rate.

Key words: cotton, fiber quality, leaf N concentration, cellulose