春大豆花叶病毒(SMV)三株系与褐斑粒的关系研究

ASSOCIATION OF INFECTION BY THREE STRAINS OF SOYBEAN MOSAIC VIRUS WITH SEED MOTTLING ON SPRING SOYBEAN

大豆褐斑粒率的高低受品种和SMV株系的影响。有的品种高感三个株系所引致的褐斑粒,而有的则高抗或免疫。1号株系引致的褐斑粒率高于2号和3号株系。植株感病后严重程度与褐斑率高低没有直接相关性。用选育抗褐斑粒的品种来提高大豆品质是可行的。

The rate of seed mottling depended on soybean cultivars and strains of SMV. Some cultivars inoculated with 3 strains of SMV were highly mottling-snsceptible and others were highly mottling- resistant or absence of Seed mottling. The rate of seed mottling infected by Strain 1 of SMV was more than strain 2 or strain 3. The disease rating index of infected plants did not correlate with the rate of Seed mottling. Improved quality of Soybean seed with the help of selective breeding of mottling-resistant variety that may tbe feasible.