STUDIES ON RECURRENT SELECTION OF WHEAT RESISTANCE TO GIBBERELLA ZEAE (SCHW) PETCH (RESISTANCE TO SPREAD)

Three basic communities resistant to scab(Gibberella Zeae(schw) Petch) were separately established with eight varieties (Lines) in recurrent selection program. It was found that the mean mumber of diseased spikelets and the resistance of community were improved obviously after a recurrent selection circle. Nine wheat lines resistcnce to scab were selected through several recurrent selection circles and their resistance to scab was ranged from mid-resistance to resistance by natural and artificial inoculating identification in Plant Protection Institutes of Jiang Su,. Zhe Jiang, Jian Yang region of Fu Jian etc. , while agronomic characters were also improved simultaneously in. there resistant lines.The resistance stability of parent, techniques of inoculation and selection are also discussed here.