EVALUATION OF THE INTROGRESSED LINES AND SCREENING FOR ELITE GERMPLASM IN GOSSYPIUM

作     者：PANG Chaoyou DU Xiongming MA Zhiying 

作者机构：Cotton Research Institute Chinese Academy of Agricultural Sciences Key Lab of Cotton Genetic Improvement Anyang 455112China Hebei Agricultural University Baoding 071001China 

出 版 物：《Chinese Science Bulletin》 (中国科学通报)

年 卷 期：2006年第51卷第3期

页      面：304-312页

核心收录：

学科分类：0710[理学-生物学] 07[理学] 09[农学] 071007[理学-遗传学] 0901[农学-作物学] 090102[农学-作物遗传育种] 

基　　金：National Key Science and Technology R&D Program in the 10th five-year plan of China  (2004BA525B05) 

主　　题：棉花 种间杂交 促进作用 种质 基因渗入 

摘      要：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.