Selection for high self-incompatibility in inbred lines of brussels sprouts

摘要

An attempt to improve the self-incompatibility of an advanced inbred line of Brussels sprouts by selection has been unsuccessful. The apparent plant-to-plant variation in self-incompatibility has little or no genetic basis. It results from environmental effects and from intrinsic physiological differences between flowers on a single plant. A temperature rise from 17°C to 26°C markedly increases the self-compatibility of the lines tested, but no evidence was found for end-of-season compatibility. The best methods for producing inbreds with high and consistent self-incompatibility are discusse