Development of anthracnose- (Colletotrichtum gloesporoides (Penz.) Penz & Sass.) resistant narrow-leaved forage lupine breeding lines

Abstract

Breeding for disease resistance is one of the most difficult tasks in breeding work. Rapid mutation of pathogen populations, their ability to continuously form a large amount of races differing in virulence and aggressiveness are the main obstacles in the development of diseaseresistant lupine varieties. In 2001 three, in 2001–2003 seven narrowleaved forage lupine breeding lines developed by the individual selection methods and characterised by a high resistance (7–9 points) to anthracnose (Colletotrichtum gloesporoides (Penz.) Penz & Sass.), rapid growth rate and high seed yield (2.2–2.7 tha–1) were tested in competitive variety testing trials. The investigated lines are a valuable material from the viewpoint of genetics, breeding and agronomic characteristics which will be used in subsequent breeding work, and the most promising lines will be transferred to an official variety testing. Keywords: narrow-leaved forage lupine, individual selection, variety, resistance to fungal diseases