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作 者 ：冯建菊  谭敦炎

期 刊 ：西北植物学报 2006年 12期

关键词：软紫草；二型花柱；结实特性；结籽特点；

Keywords:Arnebia euchroma, distyly, fruit-setting characteristic, seed-setting characteristic,

摘 要 ：对软紫草二型花柱植株结实特性的观察结果表明:3个样地中长花柱植株的分枝数、每株花数及结实率均高于短花柱植株;在S1和S2中,长花柱植株的单株种子产量、结籽率和种子千粒重均高于短花柱植株;S3中长花柱植株的单株种子产量和结籽率高于短花柱植株,而种子千粒重却低于短花柱植株。统计分析显示,软紫草2种花型植株的结实特性在各样地中存在不同程度的差异,而同一花型植株的结实特性在不同样地间多表现出差异显著,说明软紫草的结实特性受花型和生境的双重影响,且生境比花型对其结实特性的影响更大。

Abstract:The observation of the fruit-setting characteristics of distyly Arnebia euchroma plants revealed that in three quadrats,the plants with long and middle-length styles had higher branch numbers,higher flower umbers per plant and high setting rates than the

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