大型冬瓜杂交制种关键技术研究

以大型冬瓜一代杂种白星的父母本为试材，研究了人工授粉、留瓜节位、单株留瓜数、种瓜采收期和后熟期，以及种植密度对种子产量和质量的影响。结果表明，第2或第3雌花节位留种瓜较好，单株选留1个种瓜较为适宜；7：00~9：00每朵雄花授1~3朵雌花为较适宜的授粉量；授粉60 d后采收种瓜，并经过20 d的后熟期，种子成熟度好,发芽率高；每667 m2栽800~900株的定植密度可以获得较高的种子产量。

Studies on Key Technique of Hybrid Seed Production of Big-type Wax Gourd

The technique of hybrid seed production in big-type wax gourd was studied in this paper.The results indicated that it is better to leave one fruit for propagation and the fruit on the 2nd or 3rd female flower node is better than other nodes.One male flower is better pollinated to 1-3 female flowers at 700-900.Good seed maturity and high seed germination percentage could be achieved when the fruit was picked 60 days after pollination and left ripening for 20 days.Planting density of 12 000-13 500 plants per hm2 can gain higher seed yield.