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报道了桃树[ Prunus percica Batsch(L)]23 个品种花粉发生发育和花粉败育过程中细胞形态学上的变化特征。桃雄性不育的主要表现形式为空粒花粉和花药空囊,及花粉形似发育正常,但生活力极低。导致空粒花粉产生的主要途径:①花粉母细胞减数分裂不正常;②花粉处于单核晚期———二核早、中期绒毡层细胞发生液化、增生现象。空囊产生的主要途径:①四分体———单核早期绒毡层细胞体积发生明显的增大、液化;②绒毡层细胞在四分体———单核早期发生增生;③造胞细胞或花粉母细胞生长发育不良。
The morphological changes of pollen morphology and pollen abortion in 23 cultivars of Prunus percica Batsch (L) were reported. The main manifestations of male sterility of peach are empty-particle pollen and anther empty bag, and pollen-shaped development is normal, but the viability is very low. The main pathways leading to the production of the empty grain pollen include: ① pollen mother cell meiosis is not normal; ② the pollen is in the early stage of mononuclear - the early and medium nucleus of the nucleus have liquefaction and hyperplasia in the tapetal cells. The main pathways of air sac production are as follows: (1) Tetragonuclear cells in early mononuclear cells significantly increase in volume and liquefy; (2) tapetal cells proliferate in early tetrad - mononuclear nuclei; (3) Cell or pollen mother cell dysplasia.