Abstract:

‘Hulü 6’is a new broccoli F₁ hybrid developed from male sterile line. Its female and male parents are XY-2 and LFZY04-4，respectively. It is a late-maturity cultivar about 90–105 days from planting to harvest. It shows high uniformity，vigorous plant growth and excellent cold resistance. Its head is compact，spherical round，green color and fine. The main head diameter is 18 cm and the average single head weight is about 650 g. The average yield is 24 t · hm^-2 according to planting density about 37 500 plant · hm^-2. It is high resistance to black rot disease in field. The cultivar is good adaptability for different sowing time. It is no head-leaves under early sowing and no red ball under late sowing.

Key words: broccoli, late-maturing, male sterile, hybrid, cultivar