Sex distribution in pili morphology and biology of flowers from hermaphrodite trees [Philippines]
1979
Zuno, J.C. | Coronel, R.E. (University of the Philippines at Los Banos, College, Laguna. Inst. of Plant Breeding)
Out of 195 seedling pili trees in the UPLB Campus, 50.9 percent are female, 47.2 percent male and 1.9 percent "hermaphrodite". On the average, male trees bear 18 male flowers per inflorescence, female trees 5 female flowers, and "hermaphrodite" trees 17 male and one perfect flowers. "Hermaphrodite" inflorescence is cymose, 97 mm long and arises at leaf axil of young shoot. Male and perfect flowers are morphologically the same except for the presence of a functional pistil in the perfect flower. Blooming in the inflorescence is basipetal and maximum anthesis of both flower types takes place three days after petal splitting. Anther dehiscence and stigma receptivity occur at anthesis. Pollen from perfect flower is capable of pollinating female flowers resulting in 72.2 percent fruit set. Fruit and kernel of hermaphrodite trees are smaller and lighter than those from female trees.
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