大豆花叶病毒种子传染的研究

SEED TRANSMISSION OF SOYBEAN MOASAIC VIRUS

摘要:

大豆花叶病毒(SMV)种子传染率与品种间的抗性和SMV不同株系呈正相关,而与种子的褐斑粒率和种株的病情指数相关性极不显著。1号株系的种传病苗率高于2号和8号株系。高抗SMV种传的品种,能抗8个株系的传染。可以通过选育和筛选种传病苗率低的品种推广,减少本病的初次侵染来源。

Abstract:

The seed infection rate of SMV positively correlated with the disease resistance between cultivars and the different strains of SMV, but thè correlation did not noticeable between the seed infectionrate and seed-mottling rate or disease index of seed plants. The infected seedling rate of seed-borne SMV strain 1 was higher than strain 2 or 3. The cultivar which highly resist seed infection of SMV would be resistant to all 3 srains. Primary infection source may be reduced by breeding and selecting the variety with the lower infected seedling rate of seed-borne SMV.