不同粒径大白菜种子的部分生物特性研究

Part Biological Characteristics Study on Various Diameter Seeds in Chinese Cabbage

连续4年的研究结果表明:太原二青种子中,以B粒径等级种子比例最高;晋菜三号种子中,虽然B粒径等级种子比例最高,但与C粒径等级种子比例差距相对较小。以A粒径等级种子千粒质量最高,随着种子粒径的减小,其千粒质量也减小,其中A,B,C这3个粒径等级种子平均千粒质量分别为D粒径等级种子平均千粒质量的2.7倍、2.1～2.2倍、1.5倍。不同粒径等级种子的室内发芽势和发芽率,以B粒径等级种子最高,D粒径等级种子最低。不同粒径等级种子的田间出苗势和出苗率,以D粒径等级种子最低。A粒径等级种子中破损种子及杂质占有的比例较大。

Four years successive research showed： The proportion of B diameter class was the highest in Taiyuan Erqing seed;The proportion of B diameter class was the highest in Jincai 3,but it showed higher relation with the proportion of C diameter class.1 000-seed weigh of A class was the highest,but it reduced with the decrease of seed diameter.The average 1 000-seed weight ratio of A,B,C classes was 2.7,2.1～2.2 and 1.5 times than D class.As far as the indoor germination energy and seed germination percentage was concerned,B class was the highest,while D class the lowest.And for the seedling emergence and rate in open field,D class was the lowest.Broken seed and impurity of A class was higher than the other classes.