POLLINATION AND THE FUNCTION OF FLORAL PARTS IN CHAMAECRISTA-FASCICULATA (FABACEAE)

Authors
Citation
Ad. Wolfe et Jr. Estes, POLLINATION AND THE FUNCTION OF FLORAL PARTS IN CHAMAECRISTA-FASCICULATA (FABACEAE), American journal of botany, 79(3), 1992, pp. 314-317
Citations number
17
Language
INGLESE
art.tipo
Article
Journal title
ISSN journal
0002-9122
Volume
79
Issue
3
Year of publication
1992
Pages
314 - 317
Database
ISI
SICI code
0002-9122(1992)79:3<314:PATFOF>2.0.ZU;2-Z
Abstract
Chamaecrista fasciculata has a rigid upper petal that curves over nine of the ten anthers. The single anther is deflexed. as is the style. A n experimental pollination study was designed to test the hypotheses t hat: 1) the rigid petal acts as flight guide to ensure pollination; an d 2) the nine grouped anthers serve as fodder anthers, whereas the sin gle deflexed anther functions in pollination. The rigid petal was remo ved from 97 flowers. Only 5% of the manipulated flowers set fruit in c omparison to a fruit set of 47% for the control group. The results of the study support the flight guide hypothesis. Pollen from both sets o f anthers is viable and germinates on receptive stigmas. A pollen flow experiment using powdered metals, backscatter scanning electron micro scopy, and X-ray microanalysis revealed that there is no difference in the frequency of pollen distribution from either set of anthers. Ther efore, this study refutes the fodder pollinating anther hypothesis.