Regulation of Seed Number and Female Incitation of Mate Competition by a pH-Dependent Proteinaceous Inhibitor of Pollen Grain Germination in Leucaena leucocephala. Ganeshaiah, K., N. & Shaanker, R., U. Oecologia, 75(1):110-113, 7, 1988.
Website abstract bibtex Leucaena leucocephala generally produces pods with more than 7-9 seeds. This is regulated by the stigmatic inhibition of pollen grain germination when the pollen grains are less than a critical number in the stigma. This number-dependent inhibition of pollen grain germination is effected by a pH-dependent proteinaceous inhibitor active at the stigmatic pH. Only when the pollen grains in the stigma exceed the critical number, they inactivate the inhibitor by collectively raising the stigmatic pH and thus overcoming the inhibition. The adaptive significance of such pre-fertilization mechanism for the female in inciting mate competition among the pollen grains is discussed. The evolution of en masse pollen grain dispersal units is explained as a sexual selection strategy by males in response to such stigmatic inhibition by females.
@article{
title = {Regulation of Seed Number and Female Incitation of Mate Competition by a pH-Dependent Proteinaceous Inhibitor of Pollen Grain Germination in Leucaena leucocephala},
type = {article},
year = {1988},
pages = {110-113},
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month = {7},
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abstract = {Leucaena leucocephala generally produces pods with more than 7-9 seeds. This is regulated by the stigmatic inhibition of pollen grain germination when the pollen grains are less than a critical number in the stigma. This number-dependent inhibition of pollen grain germination is effected by a pH-dependent proteinaceous inhibitor active at the stigmatic pH. Only when the pollen grains in the stigma exceed the critical number, they inactivate the inhibitor by collectively raising the stigmatic pH and thus overcoming the inhibition. The adaptive significance of such pre-fertilization mechanism for the female in inciting mate competition among the pollen grains is discussed. The evolution of en masse pollen grain dispersal units is explained as a sexual selection strategy by males in response to such stigmatic inhibition by females.},
bibtype = {article},
author = {Ganeshaiah, K N and Shaanker, R Uma},
journal = {Oecologia},
number = {1}
}
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