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STARCHY AND STARCHLESS POLLEN IN THE ONAGRACEAE
被引：28
作者：
BAKER, HG
BAKER, I
机构：
关键词：
D O I：
10.2307/2398994
中图分类号：
Q94 [植物学];
学科分类号：
071001 ;
摘要：
Mature pollen from 76 spp. in the complete roster of genera in the Onagraceae was examined for starch-containing or starchless contents. Fuchsia and Lopezia pollen grains, after passing through a stage of starch accumulation, lose the starch (presumably converted to lipid) and are classified as starchless. All other genera have pollen that is starch-containing at maturity. The phylogenetic implications of this are considered. Pollen grain diameter is larger in the starchy taxa than in the starchless ones. There is a strong correlation of pollen grain diameter and the length of style to be traversed by the pollen tube in species with starchy grains.
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页码：748 / 754
页数：7
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