PATERNAL EFFECTS ON OFFSPRING QUALITY IN CAMPSIS-RADICANS

被引:17
作者
BERTIN, RI
PETERS, PJ
机构
关键词
D O I
10.1086/285408
中图分类号
Q14 [生态学(生物生态学)];
学科分类号
071012 ; 0713 ;
摘要
We investigated Paternal effects on seedling performance in relation to patterns of fruit abortion in Campsis radicans using a series of 14 experiments with various combinations of pollen donors and recipients. In eight experiments significant paternal effects on three or four dependent performance variables were detected by multivariate ANCOVA. These effects were independent of seed weight, which was controlled in the experimental design and in the statistical analysis. In six of the eight experiments with significant results the favored pollen recipient sired the more vigorous offspring. In general, therefore, patterns of fruit abortion with respect to outcross donor enhance progeny fitness. Maternal discrimination is reduced, however, when pollen from several outcross donors is deposited on the same stigma, a likely occurrence in nature. Discrimination among pollen from different outcross donors is also less important than the ability to discriminate between self- and cross-pollen because the latter distinction has much larger effects on offspring performance. This is one of the first studies to show a relationship between patterns of maternal choice among outcross pollen donors and quality of resultant offspring.
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页码:166 / 178
页数:13
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