Plasticity of flower longevity in Corydalis ambigua

被引:46
作者
Yasaka, M [1 ]
Nishiwaki, Y
Konno, Y
机构
[1] Hokkaido Forest Res Inst, Bibai, Hokkaido 0790198, Japan
[2] Obihiro Univ Agr & Vet Med, Lab Environm Bot, Obihiro, Hokkaido 0800834, Japan
关键词
Corydalis ambigua; flower longevity; plasticity; pollination; temperature;
D O I
10.1046/j.1440-1703.1998.00259.x
中图分类号
Q14 [生态学(生物生态学)];
学科分类号
071012 [生物信息与计算生物学]; 0713 [生态学];
摘要
We investigated the longevity of individual flowers of Corydalis ambigua Cham. et Schlecht. during different periods of pollinator activity and at different temperatures. To measure potential (unpollinated) flower longevity of C. ambigua, this study was conducted at forest islands where pollinator visits were scarce. The longevity of individual flowers of C. ambigua indicated high plasticity. The longevity of unpollinated flowers in natural pollination ranged from 2 to 25 days and continuously decreased with the date of flower opening. The temperature increased as the flowering season progressed. Furthermore, the greenhouse transplanting experiment showed that higher temperatures shorten the life span of flowers. The longevity of pollinated flowers subjected to hand pollination of newly opened flowers was shorter than that of unpollinated flowers in natural pollination regardless of the date of flower opening. These results showed that not only high temperature but also pollination shortens flower longevity. We discuss the role of plasticity in flower longevity for C. ambigua in relation to pollination success and reduction in the maintenance cost of the flowers.
引用
收藏
页码:211 / 216
页数:6
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