植物研究2011，Vol.31Issue(1)：9-14,6.
青藏高原东缘常见40种禾本科植物种子大小变异研究
The Seed Size Variation of 40 Graminious Species in the Eastern Qinghai-Tibet Plateau
摘要
Abstract
The seeds of 40 gramineous species were collected from the alpine meadow in eastern Qinghai-Tibet Plateau. Based on the data of 9 morphological characteristics of seeds, the relativity among the morphological characteristics of seeds with altitude, variance and seed weight was analyzed. The results showed that: ①The seeds traits of 40 gramineous species exhibited certain differentiations in 9 morphological characteristics and the variation of coefficient of ratio of length to high of seed was the highest, while the coefficient of variation of seed weight was the lowest, indicating that seed weight was more stable than the others among the characteristics studied. ②Correlation analyses suggested that there is significant linear correlation between the morphological variation of seeds and altitude, and there is significant linear correlation between seed length and seed weight. Variance considering three dimensions ( length, breadth and high) of seeds have higher correlation to SL/SH. SL/SH instead of the variance considering three dimensions is more appropriate than the others to measure the seeds overall pattern of gramineous species; The altitude is an important factor affecting the seed size and its variation.关键词
禾本科/种子大小/变异/青藏高原东缘分类
农业科技引用本文复制引用
陈学林,杨建美,王文敏..青藏高原东缘常见40种禾本科植物种子大小变异研究[J].植物研究,2011,31(1):9-14,6.基金项目
国家自然科学基金项目(30470307) （30470307）
西北师范大学植物学重点学科经费 （）
