Genetic effects and heterosis of the fibre colour and quality of brown cotton (Gossypium hirsutum)
文献类型: 外文期刊
第一作者: Hong-Jie FENG
作者: Hong-Jie FENG;Jun-Ling SUN;Jie WANG;Ying-Hua JIA;Xin-Yu ZHANG;Bao-Ying PANG;Jie SUN;Xiong-Ming DU
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关键词: DNA;simple sequence repeat: SSR;environmental variation;genetic effect;lint percentage;fibre length;fibre quality;residual variance;hybrid generation;fibre strength;fibre color;fibre uniformity
期刊名称:PLANT BREEDING ( 影响因子:1.832; 五年影响因子:1.956 )
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收录情况: SCI
摘要: The genetic effects and heterosis of the colour and quality of brown fibres were analysed in this paper through the complete 5 x 5 diallel crossing among two brown cotton cultivars and three white cotton cultivars in upland cotton (Gossypium hirsutum). Parents and F-1 were arranged in a randomized block design in three locations. The results showed that the inheritability for all the traits has exceeded 50%, with significant dominance effect at the 0.01 level. The additive effect of fibre colour, lint percentage, elongation and strength was also significant at the 0.01 level, reaching 85.6%, 29.7%, 16.1% and 19.1%, respectively. The ratio of residual variance of lint percentage and fibre qualities was 29.5 - 45.9%, that of colour was only 1.1%. Fibre colour had significant negative correlation with lint percentage, fibre length, uniformity, elongation and strength. The mid-parent heterosis of fibre colour was negative, which was) 0.7%; those of lint percentage, fibre length, uniformity and strength were 3.5%, 4.2%, 1.7% and 2.6%, respectively, reaching the significant level. The simple correlation coefficient between heterosis of fibre length and strength and SSR genetic distance was 0.718 and 0.724, respectively, with a significant level. For the heterosis utilizing, the fibre quality of F1 could be predicted via the mean value of the fibre qualities of parents or the SSR genetic difference among varieties (lines). Selection among the early hybrid generations was suggested. Regional planning could be applied to improve lint percentage and fibre qualities by taking advantage of environmental variation.
分类号: S3
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