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1 影响杂交水稻母本异交结实的主要因素 1.1 品种特性。由于品种间开花习性不一致,在母本异交结实上呈现很大差别。在花期相遇情况下,每天开花时间以母本早于父本或父母本接近的异交结实高,母本开花时间晚于父本的异交结实较低;母本雌性器官发育正常,柱头外露率高,包颈度小,开颖时间长的异交结实率高,开颖时间短的异交结实低;母本雌性花器对温湿度反应比较迟钝,柱头活力强,开花比较集中的异交结实高;母本雌
1 affect the male parent of hybrid rice hardcore main factors of 1.1 breed characteristics. Due to inconsistencies in the flowering habits between breeds, there was a big difference in the male parent’s diplomacy. In the case of flowering encounter, the flowering time per day was higher in the outcrossing of the female parent earlier than the male parent or the parent parent, and the flowering time of the female parent was lower than that of the male parent in the flowering period. The female parent had normal development of the female organ and stigma- The rate of outcrossing and fruiting is high, the opening degree is longer, the rate of outcrossing and fruiting is short, and the female flower of female is relatively insensitive to temperature and humidity, the stigma vigor is strong, and the flowering is more concentrated. Strong high; female female