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观察和统计昆明地区４个云南松居群的花粉粒形态，揭示云南松居群内花粉粒形态的多态性及其分布频率，并应用巢式等级方差分析方法，试图探讨云南松花粉粒在居群间、个体间和个体（家系）内形态变异的分化大小．研究表明，云南松花粉粒形态、大小、气囊数目及其大小的变异极其复杂多样，在松属植物中所少见．巢式等级方差分析表明，昆明地区云南松居群具有两个气囊的正常花粉粒，其形态变异有大约２０．２％源于居群间，有７９．８％左右源于居群内个体间和个体（家系）内，其中个体（家系）内花粉粒形态变异方差分量占８８．３％，说明云南松个体（家系）内花粉粒形态的变异较大，环境饰变作用很大．
Observing and counting the pollen grain morphology of four Pinus yunnanensis population in Kunming region, revealing the pollen morphology polymorphism and distribution frequency of Pinus yunnanensis population in Yunnan province, and using nested rank analysis of variance method, Differentiation size of morphological variation among individuals, individuals and individuals (pedigrees). Studies have shown that the variation of pollen grains morphology, size, number of air sacs and their size is extremely complex and diverse, which is rare in Pinus. The results of nested rank analysis showed that the normal pollen grains with two air sacs in the population of Pinus yunnanensis population in Kunming region were found. About 20.2% of the morphological variation originated from the populations, with about 79.8% originated from the individuals within the population and Among individuals (pedigrees), the variance component of morphological variance of pollen grains accounted for 88.3% of the individuals (pedigrees), indicating that variation of pollen grains in individuals (families) of Pinus yunnanensis is larger and the environment modification is very significant.