铅笔柏种子大小变异的初步研究

Preliminary Study on Seed Size Variation of Sabina virginiana

内布拉斯拉加种源的铅笔柏种子平均单粒质量7.72 mg,标准差2.345 3 mg,种子大小相差悬殊,最小粒与最大粒质量相差10余倍,其中单粒质量大于平均数一个标准差的种子占14.78%,破损坏粒种子占1.17%。单粒质量的离差系数0.303 9,偏倚系数1.018 9,呈偏正态曲线分布,种子大小具有较高的变异程度。

Average single seed quality of Sabina virginiana of Nebraska seed source was 7.72 mg, and standard deviation was 2.345 3mg, the difference of seed size was great disparity, the difference between minimum size and maximum size of seed quantity was more than 10 times, single seed quality was more than average standard disparity account for 14.78%, account for 1. 17%. Deviation coefficient of single seed quality was 0.303 9, its bias coefficient was 1.018 9, distribution presented curve of partial normal, and seed size had higher variation degree.