Abstract
Induced polyploidy is suggested as a way of restudying the origin, evolution and relationships of crop plants. The author stresses the need of trained cytological help in using polyploidy as an aid in breeding; gives suggestions as to ways of obtaining improved Logan types of berries by the use of polyploid blackberry series; and refers to the origin of the Pacific Coast blackberry from a cross of a dewberry and a black raspberry.

This publication has 2 references indexed in Scilit: