Studies on genetic variability for water deficiency tolerant in some rapeseed genotypes

摘要

Seeds of 14 double haploid lines and two cultivars of spring rapeseed(Brassica napus)Fido and Serw4 were grown in irrigated soil under normal and water stress conditions. The experiments were conducted in El-Serw Agricultural Research Station,North Delta of Egypt during 2002/2003 and 2003/2004 seasons. Genetic variability were recorded for seed yield, oil content,1000 seed weigh, number of branches/plant and plant height. The stress tolerance index revealed that the genotypes double haploids lines Dh16, DhLA6 and cultivars serw4 recorded high stress tolerance and yield potential. Harvest index, days to 50% flowering and total dry mater were also studied.