TLDR
Fertility of plants of crossed and self-fertilised parentage, both lots
being fertilised in the same manner.
Fertility of the parent-plants when first crossed and self-fertilised,
and of their crossed and self-fertilised offspring when again crossed
and self-fertilised.
Comparison of the fertility of flowers fertilised with their own pollen
and with that from other flowers on the same plant.
Self-sterile plants.
Causes of self-sterility.
The appearance of highly self-fertile varieties.
Self-fertilisation apparently in some respects beneficial, independently
of the assured production of seeds.
Relative weights and rates of germination of seeds from crossed and
self-fertilised flowers.via the TL;DR App
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Written by charlesdarwin | On the Origin of Species By Means of Natural Selection
