摘要
本文研究了甘南亚高山草甸群落中６种常见野生禾草种子在不同温度条件下的萌发过程。所用计算公式为ｙ＝ａ（１－ｅ^（－ｋ（ｔ－ｌ）），其参数具有确切的生物学含义，因而真实地反映了此６种植物种子在不同温度条件下的萌发过程。在同一温度条件下，６种植物种子的ａ、ｋ、ｌ值各异。同一种植物的种子在不同温度条件下的ａ、ｋ、ｌ值也不相同。这些结果说明不同温度条件对此６种野生禾草种子的萌发能力、萌发速率、萌发历期的影响显著不同．
The germination process of the seeds of 6 species of common grasses in the community of subalpine meadow under different temperatures was studied. The formulation used here is y=a (1-e￣(-k(t-1)),in which each parameter has exact biological meaning and thereby the formulation exactly shows the germination process of seeds of the 6 species under different temperature conditions. The values of a, k, l for 6 species were different from each other even under the same condition of temperature. The values of a, k, l for each species were also different under different temperatures. These results, however, have demonstrated that the different temperatures have significantly different effects on the seed germinabilities, rate and duration of germination of the 6 species of wild grasses.
出处
《兰州大学学报（自然科学版）》
CAS
CSCD
北大核心
1994年第3期112-116,共5页
Journal of Lanzhou University(Natural Sciences)
关键词
种子
温度梯度
萌发
草地
禾草
seeds
temperature gradients
germination
