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华南农业大学叶自行等用10年生糯米糍、20年生淮枝、桂味作研究,在缺乏蜂源及花期天气反常情况下,采用人工辅助授粉,以提高荔枝座果率。这就必须采集和贮藏花粉。适当可行的方法是:在荔枝雄花伸出花药但未开裂时,结合人工疏花剪下雄花,放在5—12℃低温下贮藏,50天之内糯米糍的花粉发芽率仍达67％—85.6％,淮枝的花粉发芽率达81.7％—90.9％;在室温下贮藏3天,糯米糍花粉发芽率达91.7％,桂味花粉发芽率达86.1％。据这一结果,可以从早熟的品种上采集花粉,通过低温贮藏,用于迟熟而花期雌雄花不遇或花期遇恶劣天气的品种上作辅助授粉,可提高产果率。
South China Agricultural University leaves and other 10-year-old glutinous rice 糍, 20-year-old Huai Zhi, Gui Wei for research, in the absence of bee sources and flowering weather anomalies, the artificial assisted pollination to improve the litchi fruit rate. This requires the collection and storage of pollen. Appropriate and feasible method is: litchi male flowers out of the anther but not cracking, combined with artificial flowers cut male flowers, stored at low temperature of 5-12 ℃, 50 days of glutinous rice pollen germination rate still reached 67% 85.6%, HuaiZhi pollen germination rate of 81.7% -90.9%; at room temperature for 3 days, the waxy rice germination rate of 91.7% pollen, pollen germination rate of 86.1%. According to this result, it is possible to collect pollen from precocious varieties and to increase the rate of fruit-setting by low-temperature storage, secondary maturity, and the flowering of female flowers and male-dominated flowers or anther weather.