西瓜雄花退化系“华知Ａ”是华知农业科学发展研究所以“华知Ｂ”为母本，“华知Ｃ”为父本授粉繁殖而成的。雄花退化和花粉败育率达１００％。用“华知Ａ”雄花退化系同任何西瓜品种为父本杂交，无需去雄和套袋，就可’以收到高纯度的杂交种子，杂交一代均为极少籽西瓜。利用 Watermelon male flower degeneration “Hua Zhi A” is Hua Zhi Agricultural Science Development Institute with “Hua B” as the female parent, “Hua C” as the male pollination from. Male flower degeneration and pollen abortion rate of 100%. With “Hua Zhi A” male flower degeneration line with any watermelon varieties as the male parent, without removing and bagging, you can receive high purity hybrid seed, hybrid generation are very few seeds of watermelon. use