风箱果结实量及种子特性

摘要

风箱果（ Physocarpus amurensis）为濒危种。通过对风箱果种子结实量和种子特性进行测定，结果表明：风箱果果实出种量很低，含1～2粒种子的果实比例最大，平均为3．0粒种子，且不同采种母树间种子质量差异显著（ P＜0．05）；风箱果种子含水量、千粒种子质量和生活力分别为9．86％、1．42 g和94．44％；种子24 h达到了吸水饱和状态，种子不存在种皮透水不良的问题；不同采种母树间种子的发芽率差异不显著（P＞0．05），平均发芽率较低（21．25％）且发芽缓慢；播种出苗率仅为6．22％。%Physocarpus amurensis is one of endangered plants.The experiment was conducted to measure the seed yield and seed characteristics .The fruit yield is very low, the proportion of fruit with 1-2 grains is the largest and mean seed number per fruit is 3.0.Seed weight between different mother trees is significantly difference ( P0.05).The average germination rate is low (21.25%) with slower germination, and the seedling emergence rate is only 6.22%.