| Evaluation of the introgressed lines and screening for elite germplasm in Gossypium |
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| 作者姓名： | PANG Chaoyou DU Xiongming MA Zhiying |
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| 作者单位： | [1]Cotton Research Institute, Chinese Academy of Agricultural Sciences, Key Lab of Cotton Genetic Improvement, Anyang 455112,China [2]Hebei Agricultural University, Baoding 071001,China |
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| 基金项目： | We gratefully acknowledge Dr. Ma Xuan who reviewed and translated this article, and Jing Yu at USDA-ARS, College staion, TX 77845, for her careful review. This work was supported by the National Key Science and Technology R＆D Program in the 10th five-year plan of China （Grant No. 2004BA525B05）. |
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| 摘 要： | THERE ARE 51 SPECIES IN THE GENUS OF GOSSYPIUM1]. EXCEPT UPLAND COTTON CULTIVARS, WILD CULTIVARS, SPECIES AND RACE HAVE ABUNDANT GENETIC POLYMORPHISMS DUE TO THEIR VARIOUS ENVIRONMENTAL DISTRIBUTION AND LONG-TERM NATURAL SELECTION. THEREFORE, THEY POSSESS LOTS OF EXCEL- LENT GENES THAT CAN BE USED TO EXPLOIT POTENTIAL TRAITS, SUCH AS DROUGHT RESISTANCE, DISEASE AND INSECT …
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| 关 键 词： | 棉花 种间杂交 促进作用 种质 基因渗入 |
| 收稿时间： | 2005-09-24 |
| 修稿时间： | 2005-09-242005-10-22 |
Evaluation of the introgressed lines and screening for elite germplasm in Gossypium |
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| PANG Chaoyou DU Xiongming MA Zhiying.Evaluation of the introgressed lines and screening for elite germplasm in Gossypium[J].Chinese Science Bulletin,2006,51(3):304-312. |
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| Authors: | Chaoyou Pang Xiongming Du Zhiying Ma |
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| Institution: | (1) Cotton Research Institute, Chinese Academy of Agricultural Sciences, Key Lab of Cotton Genetic Improvement, Anyang, 455112, China;(2) Hebei Agricultural University, Baoding, 071001, China |
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| Abstract: | In this research, 155 cotton introgressed lines from interspecific hybridization have been col- lected for the purpose of evaluating the effects of enhancement of new upland cotton germplasm by interspecific hybridization, screening for elite germ- plasm and improving cotton breeding. Through iden- tification of various agricultural traits, we found that different wild cotton species had different capacities in terms of fiber quality, disease resistance, tolerance of abiotic stress, pest resistance and so on. SSR molecular marker technology has been used to de- tect the exotic genetic elements in interspecific hy- brids, and 25 SSR specific loci that can be classified into two groups were found among 15 pairs of SSR primers. Results also showed that 8 exotic germ- plasm (Gossypium barbadense, G. arboreum and G. thurberi, etc) had genetic transmission toward upland cotton. A strategy of screening elite germplasm with exotic genes based on the molecular marker-assisted breeding techniques was suggested, and 18 lines with high-quality fiber and 4 lines with resistance to Fusanrium wilt and Verticillium wilt have been ob- tained. |
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| Keywords: | interspecific hybridization in Gossypium germplasm enhancement elite germplasm SSR |
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