棉 花 学 报    Cotton Science   2010，22（4）：312-318

Polymorphism Analysis and Sensitivity Materials Screening of Offspring of Cotton Varieties on Space Mutation
PENG Zhen^1,2, SONG Mei-zhen^1*, YU Shu-xun^1*, FAN Shu-li¹, YU Ji-wen¹, FENG Li-na^1,3, GONG Wen-fang^1,2
(1. Cotton Research Institute , Chinese Academy of Agriculture Science / Key Laboratory of Cotton Genetic Improvement , Ministry of Agriculture , Anyang , Henan 455000, China; 2.Huazhong Agricultural University , Wuhan 430070 ， China ; 3. Northwest A&F University , Yangling , Shaanxi 712100, China )

Abstract: Dry seeds of ten cotton varieties were carried by the Shijian-8 satellite for space mutation treatment. The SP₁ and SP₂ offspring of cotton varieties were used to screen mutants and analyze DNA molecular polymorphism and investigate the agronomic traits. The aim was to study sensitivity of cotton varieties under space mutation. The results showed that seven susceptive varieties were confirmed and expressed high polymorphism and changed significantly on the agronomic traits. These results indicated that the outer space mutation would be an effective method to develop new cotton varieties.
Key words: cotton; space mutation; mutant; agronomy characters; polymorphism   [Full Text, 4819KB]