一、引言 花粉不仅可以通过与雌配子的结合,直接影响后代的遗傳性,而且还能間接依靠蒙导作用,異种花粉的相互刺激以及改变受精的生理环境等等来改善杂种后代的遗傳性。为此研究花粉的生理,对育种工作来說确实有着巨大的现实意义,尤其研究树木花粉的生理,因为进行树木的有性杂交 I. INTRODUCTION Pollen not only can directly affect the heredity of offspring through the combination with female gametes, but also can indirectly depend on the role of guide, the mutual stimulation of different pollen and the physiological environment of fertilization to improve the inheritance of hybrid offspring Passing sex. Therefore, researching pollen physiology is indeed of tremendous practical significance for breeding work. In particular, the research on the physiological pollen of trees is carried out because of the sexual hybridization of trees