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为制定黔油 12号大面积制种技术方案 ,明确该品种父母本的最佳播差期和最佳播期 ,提高异交结实率和制种产量 ,1999年 9月 18日至 11月 6日共进行了 9期相隔 6 d的父母本播期试验。结果表明 :父母本最佳播差期为 6 d;最佳播期在 9月中旬至 10月中上旬 (父本最迟播期为 10月 12日 ) ;在最佳播期内 ,父本比母本提前 6 d播种的花期相遇较好 ,异交结实率高 ,制种产量高
In order to formulate the technical plan for large-scale seed production of Qianyou 12, the optimal sowing date and sowing date of the parents of this variety were clarified, and the rate of outcrossing and seed production was increased. From September 18 to November 6, 1999 Japan conducted a total of 9 6 days apart from the parents of this sowing date test. The results showed that: the optimal sowing date for parents was 6 days; the best sowing date was from mid September to mid October (the latest sowing date was October 12); in the best sowing date, The flowering date seeding 6 days ahead of the female was better, the rate of outcrossing was higher and the seed yield was higher