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作 者 ：李晓洁 徐化成

期 刊 ：林业科学 1989年 25卷 2期 页码：97-105

关键词：种子；发芽；种源；白皮松；

Keywords:Seed, Germination, Provenance, Pinus bungeana Zucc. Ex Endl,

摘 要 ：我们从形态与生化组成、休眠习性以及发芽要求三方面研究了山西临汾和陵川、甘肃徽县、四川江油四个不同种源白皮松种子的变异情况,发现种子大小和千粒重以及脂肪酸与氨基酸组成在种源间存在显著差异,种源间种子休眠深浅显著不同。干冷生境种源(临汾、陵川)种子休眠较深 ,比湿暖生境种源(徽县、江油)种子更能抵抗水分逆境。而温度与种源没有显著交互作用,25/20和25/15均适宜各种源种子的发芽。

Abstract:Seeds of Pinus bungeana from 4 different provenances were studied. Results showed that seed size, 1000-seed-weight as well as the compositions of fat acid and amino acid of seeds varied according to provenances. Seeds from Lin-feng and Ling-chuan appeared to be more dormant and more resistant to osmotic water stress. Under the temperatures of 25/20 and 25/15(day/night), however, seeds of all the 4 provenances germinated quite well, dictating no significant combination effect of provenance and temperature.

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