Pollination Biology ofHosta sieboldiana(Lodd.) Engler andH. sieboldii(Paxton) J. Ingram (Liliaceae)
作者:
HIROSHI TAKAHASHI,
YAYOI GOTO,
SHINKO KANEMATSU,
SHIZUKO NIWA,
KAZUYO MORI,
KUNIYOSHI NOZAKI,
期刊:
Plant Species Biology
(WILEY Available online 1994)
卷期:
Volume 9,
issue 1
页码: 23-30
ISSN:0913-557X
年代: 1994
DOI:10.1111/j.1442-1984.1994.tb00078.x
出版商: Blackwell Publishing Ltd
关键词: herkogamy;homogamy;Hosta sieboldiana;Hosta sieboldii;pollination
数据来源: WILEY
摘要:
AbstractThe pollination biology ofHosta sieboldianaandH. sieboldiiis investigated comparatively in Central Japan. Both species have homogamous, one‐day flowers pollinated by bumblebees. The abdomens of the bees touch the stigma on the extended style when they land on the anthers inside the herkogamous flower, and autogamy is effectively prevented. However, the flowers are fairly self‐compatible, and geitonogamy may occur rather frequently because two or more flowers on a scape very often bloom at the same time and many ramets are contiguous. The pollen/ovule ratios suggest that these species are facultative outbreeders. The flower ofH. sieboldiiseems completely suited to bumblebee pollination. InH. sieboldianathe stigma of the flower, whose style strongly protrudes, is not always touched by bumblebees, but frequent visitation of bumblebees results in pollination of almost all the flowers. Both species have similar pollination systems but seem reproductively isolated by blooming times and habitats. Their common pollinators, however, may sometimes cause introgressive hybridization in contiguous populati
点击下载:
PDF
(1625KB)
返 回