The capacity for selfing in these fishes has apparently persisted for at least several hundred thousand years. |
Although not in a significant proportion, seeds produced by selfing often show a bimodal weight distribution, with about one-quarter of seeds lighter than others. |
As for calculation of the selfing rate, self-pollination was with pollen from other flowers of the same plant. |
As a floral device to reduce selfing, the pistil of wild tomatoes extends farther out of the flower than today's cultivars. |
Accessions generally consist of seed multiplied by selfing a single initial wild-collected individual. |
Moreover, the high loads of inviable or weak aneuploid pollen produced by triploids induce high selfing rates in normally self-incompatible sexual diploids. |