【摘要】 1987—1988年,利用人工气候箱对我国东北春大豆品种(系)1910份进行了萌发期抗冷的筛选与研究,温度控制于6℃,恒温,并以25℃发芽实验作对照。(1)不同品种(系)在6℃下发芽率变化很大,其范围从0—100％;(2)黑龙江大豆在6℃下发芽速率最快;(3)确定了6℃下发芽时的最佳调查时间为13—14天;(4)两年共筛选出358个高抗冷材料,占参试材料的18.7％;(5)黑种皮,深褐脐,肾状、扁椭粒,种皮无光泽表现出较强的抗冷性;(6)百粒重与抗冷呈极显著的负相关;(7)种子的蛋白质含量与抗冷性关系不大,粗脂肪含量、脯氨酸含量与抗冷性呈极密切的负相关,亚油酸与油酸的比值与抗冷性呈极显著的正相关。更多还原

【Abstract】 Screening and study for tolerance to cold during germination at 6********** on soybean were conducted with controlled phytotron in 1987 and 1988. A total of 1910 varieties from the northeastern area of China were tested and the results are displayed as follow: (1) , The germination percentages from different varieties varied greatly with the range from 0 to 100%. (2), 13- 14 days treated under low temperature were considered as the best investigative date for germination at 6℃, (3), Tolerance to cold is different oweing to the difference of seed coat colour, hilum colour, seed shape and lustre of seed coat. (4), The negative correlation coefficient between weight of 100 seeds and tolerance to cold is closely up to i % significant level. (5), Fat %, Proline % and L/O acid ratioes are related to cold tolerance except protein % in dry seed.更多还原