Photosynthetic characteristics of the subtending leaf of cotton boll at different fruiting branch nodes and their relationships with lint yield and fiber quality
文献类型: 外文期刊
第一作者: Jingran Liu;;Yali Meng
作者: Jingran Liu;Yali Meng;Fengjuan Lv;Ji Chen;Yina Ma;Youhua Wang;Binglin Chen;Lei Zhang;Zhiguo Zhou
作者机构:
关键词: cotton (Gossypium hirsutum L.);subtending leaf of cotton boll;fruiting branch nodes;chlorophyll;photosynthesis;yield and quality
期刊名称:FRONTIERS IN PLANT SCIENCE ( 影响因子:5.753; 五年影响因子:6.612 )
ISSN: 1664-462X
年卷期: 2015 年 6 卷
页码:
收录情况: SCI
摘要: To investigate photosynthetic characteristics of the subtending leaf at the 2-3rd and 10-11th fruiting branch (FBN, FB2-3, and FB10-11), and their relationship with cotton yield and quality, field experiments were conducted using two cotton cultivars, Kemian 1 and Sumian 15. The results showed that with FBN increasing, chlorophyll (Chl) components, Pn and non-photochemical quenching (NPQ) in the subtending leaf significantly declined, while soluble sugar, amino acid and their ratio (C-SS/C-AA) as well as F-v/F-m increased. These results indicated that (1) non-radiative dissipation of excess light energy at FB2-3 was reduced to improve solar energy utilization efficiency to compensate for lower Pn, (2) higher NPQ at FB10-11 played a role in leaf photo-damage avoidance, (3) boll weight was related to the C-SS/C-AA ratio rather than carbohydrates content alone, (4) with FBN increasing, lint biomass and lint/seed ratio increased significantly, but lint yield decreased due to lower relative amount of bolls, and (5) the decreases in Pn, sucrose content and C-SS/C-AA in the subtending leaf at FB2-3 resulted in lower boll weight and fiber strength.
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