Allocation of reproductive effort to the male and female strategies in wind-pollinated plants
β Scribed by Cliff Lemen
- Publisher
- Springer-Verlag
- Year
- 1980
- Tongue
- English
- Weight
- 467 KB
- Volume
- 45
- Category
- Article
- ISSN
- 0029-8549
No coin nor oath required. For personal study only.
β¦ Synopsis
Amaranthus and several other wind-pollinated species of plants are used to test some of the theoretical models of relative reproductive effort towards the male and female sexes. Consistent with these models, in self-compatible, monoecious Amaranthus, Chenopodium, Digitaria, Setaria, and Lepidium, female effort represented over 90% of the total reproductive effort. Also consistent with predictions, Lolium, a self-incompatible wind-pollinated species, was found to have about equal male and female effort. A method is described here that should prove useful in quantifying male and female effort in both wind and insect-pollinated species of plants.
π SIMILAR VOLUMES
Costs of allocation to male versus female functions were determined for the monecious, annual vine Lagenaria siceraria by removing all flower buds of a given gender and using the additional vegetative growth as a measure of the cost of allocation to that gender (following methods of Silvertown 1987)
At the beginning of the reproductive period in May, there was an increment in both the gonad and heaptopancreas. During the peak phase in June, with high ovary production, there was a decrease in the hepatosomatic index (HSI), particularly for the Ariake females. The minimum gonadosomatic index (GSI