贮藏时间对“川草1号”老芒麦种子发芽特性的影响

以贮藏0～8个月的"川草1号"老芒麦种子为材料,通过发芽试验,测定发芽势、发芽率、发芽指数、畸形率等参数,研究其发芽特性。结果表明:老芒麦种子具有一定的休眠性,贮藏时间对种子发芽特性有显著的影响;随贮藏时间的增加,种子发芽势、发芽力、发芽指数显著增大,幼苗的畸形率逐渐下降,但种子的腐败率逐渐增加;生产中要选择合适的播种时期与播种量,以提高种子的种用价值。种子贮藏时,要注意贮藏条件的选择,避免种子腐败,保持种子具有较强的种子活力。

Effect of Storage Time on Seed Germination Characteristics of us sibiricus L. cv.Chuancao No.1

In the study, seed of Elymus sibiricus L. cv.chuancao No.1 was stored for 0 - 8 months, its germination potential, germination rate, germination index, malformation rate and other parameters on the paper-bed at room temperature were determined and analyzed. The results showed that the seeds of E. sibiricus L. had some dormancy. Storage time had a significant effect on germination characteristics of seed. With the storage time increasing, germination potential, germination ability and germination index significantly increased, and malformation rate of seedlings gradually decreased, but corruption rate of seed gradually increased. In practice, it was important to select appropriate sowing date and amount for improving the breeding value of seed. When seed was stored, we should pay attention to the choice of storage condition in order to keep strong seed vigor.