To select and breed hybrid rapeseed with high oil,high yield and strong advantages suitable for mechanical cultivation,the aim is to provide excellent rapeseed varieties and innovative strong and excellent vari-eties for production.Through many years of multi-point experiments and directional selection,using the male sterile line"H04A"as the maternal parent and the high quality germplasm resource"DC2R"with good compre-hensive resistance as the paternal parent,a mechanically harvestable,strong dominant brassica napus double low hybrid rapeseed new variety'Qinyou 1618'has been bred.The average yield of this variety was 3 468.75 kg/hm2,which was 8.5%higher than that of'Qinyou 7',and the oil content was 46.76%.The average yield in the lower reaches of the Yangtze River was 2 854.05 kg/hm2,which was 10.67%higher than that of'Qinyou 10',and the oil content was 49.68%.It exhibited rapid growth,resilience to late sowing,tolerance to dense planting,strong disease resistance,and moderate plant height(160 cm).With lodging resistance and ideal for mechanical harvesting,'Qinyou 1618'is suitable for winter-sowing and cultivation in the Huanghuai area and low-er reaches of the Yangtze River.
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