The Effects of Cross and Self Fertilisation in the Vegetable Kingdom The Effects of Cross and Self Fertilisation in the Vegetable Kingdom The Effects of Cross and Self Fertilisation in the Vegetable Kingdom is a book on evolution in plants by Charles Darwin, first published in 1876. In this book Darwin examines the effects of cross and self fertilisation of plants and provides experimental evidence for a hypothesis stated in his famed book of 1859, Origin of Species, that "... in none [i.e. plant] [...]can self-fertilisation go on for perpetuity" ("Origin", p. 101). He reports on experiments conducted on over 60 different species of plants, where he used controlled pollinations in
Systematics and the Origin of Species Systematics and the Origin of Species Systematics and the Origin of Species from the Viewpoint of a Zoologist is a book written by zoologist and evolutionary biologist Ernst Mayr, first published in 1942 by Columbia University Press. The book became one of the canonical publications on the modern synthesis. Based on Mayr's Jesup Lectures delivered at Columbia University in 1941, the book combines concepts of zoology and genetics, and features Mayr's biological species concept. The biological species concept defines a species in terms of biological factors such as reproduction, taking into account ecology, geography, and life history; it remains an