The invention discloses a breeding method of high-quality double-low
disease-resistant high-yield lodging-resistant rape
cultivar 'Zhen 2405'. The bred high-quality double-low rape
cultivar has the advantages of full and round seed grain, heavy thousand
grain weight,
black seed grain, good marketability, excellent
disease resistance, stable yield, good lodging resistance, good
plant-type trait, good maturity performance, consistent maturity and suitability for the mechanized harvest. The method comprises the following steps: A) selecting the early-mature high-yield
rapeseed line 'Zhen 9701' as the maternal
plant, which has
high resistance to
Sclerotinia sclerotiorum and lodging and has compact
plant-type trait, selecting rape line F1 as the male parent, which has good agronomic characters and high-yield trait, and cross-breeding to obtain a rape line F0; and B)
sowing the rape line F0,
sowing the excellent individual plants after the two-row
sowing of the rape line F0, and self-
inbreeding for 6 generations to obtain the high-quality double-low high-yield rape
cultivar (
Brassica napus) 'Zhen 2405' with excellent resistance to
Sclerotinia sclerotiorum and lodging.