文献类型：期刊文献

中文题名：海拔对滇重楼种子大小和数量的影响

英文题名：Effects of altitude on seed size and number of Paris polyphylla var. yunnanensis

作者：高成杰[1] 张婷婷[2] 唐国勇[1] 刘方炎[1] 李昆[1]

第一作者：高成杰

机构：[1]中国林业科学研究院资源昆虫研究所;[2]昆明市呈贡区龙城街道办事处

年份：2018

卷号：37

期号：2

起止页码：366-373

中文期刊名：生态学杂志

外文期刊名：Chinese Journal of Ecology

收录：CSTPCD;;Scopus;北大核心:【北大核心2017】；CSCD:【CSCD2017_2018】；

基金：国家林业公益性行业科研专项(201304202)资助

语种：中文

中文关键词：滇重楼;种子质量;种子败育;繁殖对策;权衡

外文关键词：Paris polyphylla var. yunnanensis ; seed mass ; seed abortion ; reproductive strategy;trade -off

分类号：S565.1

摘要：种子大小和数量关系是植物繁殖对策研究的重要问题之一。为了解不同海拔下滇重楼(Pairs polyphylla var.yunnanensis)种子数量和大小的差异及其关系,以云南省普洱地区滇重楼为研究对象,对该地区景东(海拔1984 m)和镇沅(海拔1025 m)2个不同海拔点滇重楼种子数量与大小进行比较研究。结果表明:不同海拔下滇重楼果实内种子总数差异不显著(P>0.05),但景东县滇重楼果实内饱满种子数量显著高于镇沅县(P<0.05),败育种子数显著低于镇沅县(P<0.01),种子百粒重以镇沅县高于景东县(P>0.05);不同海拔下滇重楼种子败育与种子数量和大小的关系不一致,低海拔试验点种子败育率与种子数量呈极显著正相关关系(P<0.01),而高海拔试验点种子败育率则与种子大小呈显著正相关关系(P<0.05);不同海拔下滇重楼果实内种子数量与大小呈显著或极显著负相关,即滇重楼果实内种子数量与大小在不同海拔下均存在权衡关系,但海拔1025 m试验点的回归斜率显著低于海拔1984 m试验点(P<0.05),表明滇重楼种子数量和大小之间的权衡关系对海拔的响应具有敏感性。
The relationship between seed size and number is an important topic in the research of plant reproduction strategy. The seed number, size, and aborted number in each fruit of Paris polyphylla var. yunnanensis were investigated in Jingdong （ 1984 m a.s.l. ） and Zhenyuan （ 1025 m a.s.l.） of Puer, Yunnan Province, to better understand： （1） the effects of altitude on seed size and number and （2） the relationship between the aborted seed number and the seed number/size. The results showed that there was no significant difference in total seed number per fruit between Jingdong and Zhenyuan （P〉0.05）. The filled seed number per fruit in Jingdong was significantly higher than that in Zhenyuan （P 〈 0.05 ）, and the aborted number was significantly lower than that in Zhenyuan （P〈0.01）. The seed size in Zhenyuan was slightly though not significantly higher than that in Jingdong （P〉 0.05 ）. The seed abortion rates were positively correlated with the seed numbers in Zhenyuan （P〈0.01） , and the similar correlation with the seed size was observed in Jingdong （P〈0.05）. The negative correlation between seed size and seed number was found at different altitudes, suggesting the existence of seed sizenumber trade-off in P. polyphylla var. yunnanensis. The regression coefficient between the seed size and number in Zhenyuan was significantly lower than that in Jingdong （P〈0.05）, implying the sensitivity of the trade-off between seed size and number of Paris polyphylla var. yunnanensis to the changes of altitude.