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桉树主要靠昆虫授粉,种子合成主要是异型杂交(69—86％),但也存在相当多数量的自交。自交导致发芽率低,减少结籽数量,降低实生苗活力。在天然林中,由昆虫形成的自由授粉的效率低,并且花粉败育的百分比大。每个蒴果中,产生种子的数量通常较低,这与花中的胚株数有关。控制异花授粉通常能提高每个蒴果中种子的数量,表明在自由授粉的情况下,到达柱头上的花粉量可能是种子生产中的一个限制因子。蜜蜂传粉能提高按树种子产量。普遍认为:蜜蜂能很好地帮助缓和人工林和种子园种子产量低的问题。本研究略述了蜜蜂在种子生严过程中的价值。
Eucalyptus is mainly pollinated by insects, the seed synthesis is mainly heterotypic hybridization (69-86%), but there is also a considerable number of self-bred. Selfing lead to low germination rate, reduce the number of seeds, reduce seedling vitality. In natural forests, free pollination by insects is inefficient and the percentage of pollen abortion is large. The number of seeds produced per capsule is usually low, depending on the number of embryos in the flower. Controlling cross-pollination typically increases the number of seeds per capsule, indicating that the amount of pollen reaching the stigma in free pollinators may be a limiting factor in seed production. Pollinating bees can increase tree seed yield. It is generally agreed that bees can well help to alleviate the problem of low seed yield in plantations and seed orchards. This study outlines the value of bees in the process of seed abortion.