Photosynthetic characteristics of the subtending leaf and the relationships with lint yield and fiber quality in the late-planted cotton
文献类型: 外文期刊
第一作者: Jingran Liu
作者: Jingran Liu;Yali Meng;Binglin Chen;Zhiguo Zhou;Yina Ma;Fengjuan Lv;Ji Chen;Youhua Wang
作者机构:
关键词: Cotton (Gossypium hirsutum L.);Planting date;Photosynthesis;Source-sink relationship;Subtending leaf to cotton boll
期刊名称:ACTA PHYSIOLOGIAE PLANTARUM ( 影响因子:2.354; 五年影响因子:2.711 )
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收录情况: SCI
摘要: To investigate the photosynthetic characteristics in the subtending leaf of cotton (Gossypium hirsutum L.) boll (LSCB), and their relationships with lint yield and fiber quality under cool temperature due to late planting, field experiments during 2009 to 2011 were conducted using two different cool temperature-tolerant cultivars, Kemian 1 (temperature-tolerate) and Sumian 15 (temperature-sensitive), at three planting date (25 April, 25 May and 10 June) in Nanjing (118 degrees 50'E, 4 32 degrees 02'N), China. First, the chlorophyll components in LSCB decreased with days post-anthesis, as well as soluble sugar content, amino acid content and C/N ratio. In addition, Pn, Phi(PS) (II) and F-v/F-m significantly decreased, indicating that Pn depression in LSCB was due to non-stomata closure. Second, under cool temperature due to late planting (from 25 April to 25 May and/or 10 June), Pn depression was due to stomata closure. Compared to Sumian 15, Kemian 1 demonstrated superior photosynthetic capacity. Furthermore, under cool temperature, lint biomass and seed biomass significantly decreased in parallel with the lint distribution rate, seed distribution rate and lint/seed ratio, whereas carpel distribution rate increased. These changes under cool temperature led to low lint yield and fiber strength. According to CVs and variance among three planting dates, Sumian 15 was more sensitive to cool temperature than Kemian 1.
分类号: Q94
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