【摘要】 采用普通发芽法对本所在昆明自然贮藏条件下贮存了 1～ 17年的甘蓝型油菜 (B.napus L.)种子的发芽率、始萌发时间、萌发高峰期及幼苗素质等发芽特性的变化进行了研究。结果表明 :甘蓝型油菜种子的发芽率随贮存年限的增加而呈阶梯式的下降 ,而且随着贮存年限的增加 ,种子始萌发所需时间及萌发高峰期出现的时间也随之增加 ,峰高降低 ,幼苗素质下降。根据测定结果 ,在昆明自然贮藏条件下 ,甘蓝型油菜种子的贮藏寿命为 8～ 9年 ,安全贮藏期为 1～ 7年。相关分析表明 :贮藏 1～ 7年的甘蓝型油菜种子的发芽率与贮存年限呈极显著负相关 ,相关系数 r=- 0 .95 2 7* * ,回归方程 y=93.0 7- 0 .5 9x更多还原

【Abstract】 The ordinary germination test was conducted on B. napus L. seeds which were preserved for 1-17 years under natural condition in Kunming. Germinating properties like germination percentage, initial germinating time, germinating peak period, and seedling vigor, were studied. The results showed: the germination percentage decreased in bench type as the length of storage period increased; the initial germinating time and germinating peak period appeared later and later as the length of storage became longer and longer; when the germinating peak decreased, the seedling vigor lessened .According to the tested results, the storage life of B. napus L. seeds ranges from 8-9 years, and its safe storage period is between 1-7years under natural condition in Kunming. The correlative analysis revealed that the germination percentage of 1-7 years Preserved B. napus L. seeds is significantly negative correlation with the length of storage period (r=-0.9527 ** ,y=93.07-0.59x).更多还原