米丘林在培育果树新品种时,曾常向国外征集花粉,用来和本地的果树杂交授粉。我们进行育种工作也常碰到,气候变化了,对雌蕊不能立即施行人工授粉而带来的花粉贮藏问题。因而对花粉寿命和花粉贮存条件的研究,不仅是遗传育种工作的需要,也是当前开发利用花粉资源的需要。花粉要在低温和干燥条件下贮藏,许多实验证明,零度以下的低温是保存花粉的好条件。例如:西洋梨的花粉在—17℃贮存9年还有轻度的萌发力;苹果的花粉在—190℃贮藏2年其 Michurin cultivated in the new varieties of fruit trees, polo ralph lauren, often solicited pollen abroad, used to cross-pollination and local fruit trees. We often encounter breeding work, climate change, pollen storage problems caused by the pistil can not be implemented immediately artificial pollination. Therefore, the study of pollen life and pollen storage conditions is not only the need of genetic breeding work, but also the current need of developing and utilizing pollen resources. Pollen should be stored under low temperature and dry conditions, and many experiments show that the low temperature below zero is a good condition for keeping pollen. For example, pollen of western pear has mild germination power at -17 ° C for 9 years and pollen of apple has been stored at -190 ° C for 2 years