摘要
为证实潜育期长、病情发展缓慢、最终病情轻的数量抗性的利用价值 ,在接种SMV -Sa株系条件下 ,比较了同一遗传背景、不同发病时期、不同病情下大豆品种主要农艺性状的变异。研究表明早期感染SMV对大豆产量、褐斑率等的影响显著大于花期感染 ;病情指数与大豆产量、单株荚数、单株粒数等存在显著负相关 ,病情指数越高 ,对产量等危害越大 ;通过比较SMV对质量抗性、数量抗性和感病 3类大豆品种的影响 ,证实数量抗性品种在株高、单株粒数以及大豆产量等方面受SMV影响显著小于感病品种 ,与质量抗性品种接近。说明选育数量抗性品种对控制SMV危害有实质性意义。
Effects of soybean mosaic virus on seed traits of soybean cultivars inoculated with strain Sa at different growth stages (V1 and R1) were studied. The results showed that early infection caused greater reduction of yield and higher percentages of seeds mottling than late infection did. There showed significant negative correlations between disease index and agronomic characters such as yield per plant, seed number per plant, plant height and so on. The effects of SMV on most of the agronomic characters were greater in susceptible than in resistant cultivars and the similar were found between qualitative resistant cultivars and quantitative resistance cultivars. Therefore, the quantitative resistance to SMV can well control the effects of SMV in the field as it is close to the qualitative resistance.
出处
《大豆科学》
CAS
CSCD
北大核心
2004年第1期1-5,共5页
Soybean Science
基金
国家自然科学基金资助项目 ( 3 0 170 60 7)NSFCProject 3 0 170 60 7
关键词
大豆花叶病毒
质量抗性
数量抗性
育种价值
Soybean mosaic virus
Qualitative resistant
Quantitative resistance
Value of utilization
