Inheritance of resistance to race 7 of Cercospora sojina in soybeans and RAPD tagging of the resistance gene  

作　　者：Zou, JJ Dong, W Yang, QK Cao, YP Chen, SY 

机构地区：[1]Chinese Acad Sci, Inst Genet, Plant Biotechnol Lab, Beijing 100101, Peoples R China [2]NE Agr Univ, Soybean Res Inst, Harbin 150030, Peoples R China

出　　处：《Chinese Science Bulletin》1999年第5期452-456,共5页

摘　　要：Frog-eye leaf spot of soybean caused by Cercospora sojina Hara is a kind of worldwide disease. Resistance to race 7 of C. sojina was found to be due to a single dominant gene through analyzing resistant behavior of the cross NEAU91212 （susceptible to race 7）× NEAU9674 （resistant to all races）. 3 RAPD markers linked to the resistant gene Rcsc 7 were identified using the BSA method. 2 fragments of OPS03₆₂₀ and OPS03₅₈₀ amplified with primer OPS03 co-dominantly segregated in the F₂ individuals. The genetic distance between OPS03₆₂₀ and the resistant gene is 8.7 cM. According to the co-dominant marker, the accuracy of predicting the homozygous and heterozygous resistant F₂ individuals were 100% and 97.6%, respectively.Frog-eye leaf spot of soybean caused by Cercospora sojina Hara is a kind of worldwide disease. Resistance to race 7 of C. sojina was found to be due to a single dominant gene through analyzing resistant behavior of the cross NEAU91212 (susceptible to race 7) x NEAU9674 (resistant to all races). 3 RAPD markers linked to the resistant gene Rcsc 7 were identified using the BSA method. 2 fragments of OPS03(620) and OPS03(580) amplified with primer OPS03 co-dominantly segregated in the F-2 individuals. The genetic distance between OPS03620 and the resistant gene is 8.7 cM. According to the cc-dominant marker, the accuracy of predicting the homozygous and heterozygous resistant F-2 individuals were 100% and 97.6%, respectively.

关 键 词：CERCOSPORA sojina Hara resistant gene molecular MARKERS co-dominance. 

分 类 号：Q943[生物学—植物学]