摘要
试验采用两个莱用大豆品种研究春播和秋播不同成熟度 (R7,R8,R8后 )收获的菜用大豆种子活力的差异及生理生化特性。结果表明 :春播以收获 R8、R8后种子为好 ,种子活力高 ,这可以避免因 R7期收获种子含水量高 ,夏季烈日曝晒引起的种皮直接损伤 ;秋播以适当早收 (R7)为好 ,以避过后期的“田间蚀化”。适时收获的高活力种子表现为电导率。
The paper deals with the effect of planting time and maturity on vegetable spring soybean seed vigor in the southern area of Chian. Two spring soybean seed cultivars,Hua Chun 12' and 'Hua Chu 14' were planted in spring (April4) and fall (Autumn3) and the whole plants were harvested at the repoductive stage of R7,R8 and after 5days of R8. It was observed:Two cultivars which planted in spring should be harvested at the stage of R8 to avoid the seed coat injured directly due to sun drying, but the seed vigor of R7 in the fall planting was higher than that of R8 and after days of R8. The fall planting seed should be harvested at the stage of R7 to refrain from 'field weathering' which occurred in the field. The higher vigor vegetable soybean seed which harvested at the suitable time had higher activity of POD, lower free fatty acid and higher electrical conductivity during imbibition.
出处
《种子》
CSCD
北大核心
2001年第4期14-16,共3页
Seed
