摘要
抗SCN3和SMV1互交 ,F1-F5采用 5种不同选择方法 ,产量LSD0 0 5测定处理间表现为A、B、C三个等级 ;不同选择方法的 6个产量性状变异系数差距大。SCN3和SMV1双抗性基因RsvRhg互作对产量累加增产效应于 8- 3 5 9%范围。品系产量和品系抗性基因聚合数量呈极显著正相关r =0 972 ,不同选择方法F5RsvRhg出现率 0 - 10 0 %。双接种法或交叉接种法F5RsvRhg10 0 % ,株系间变异性大 ,能结合异季南繁加代 ,是较好的选择方法。
Progenies of soybeans resistant to SCN 3×resistant to SMV 1 were studied, Five treatments for F 1 to F 5 were adopted under different selection pressures. The yield comparison (LSD 0.05 ) among these treatments showed in three classes A,B and C. The coefficient of variation of yield characters with each selection method was very different. The resistant gene interaction of SCN 3 and SMV 1 had an additive effect for incresed production The increase was 8-35.9%.The yield of the strains and quantity of polymerized resistant genes were positively correlated, r=0.972 * *. Resistant (RSVRSN) F 5 plants tad apparent rate various as 0-100% under different selection methods. RSVRSN in F 5 of double inoculation or cross inoculation was 100%, its variability among plants of each strain was great. It is better that to combine with off-seasion and nusery breeding in southern China to have an additional generation in one year.
出处
《大豆科学》
CAS
CSCD
北大核心
2001年第2期120-124,共5页
Soybean Science
基金
国家自然科学基金 (No 3 96 70 5 0 7)资助项目
