西藏光核桃资源花粉粒的进化研究  

Study on the Pollen Variation and Evolution of Prunus mira Koehne Germplasm Resources in Tibet

作　　者：崔永宁[1] 张姗姗[1] 王力荣[2] 赵凡[1] 格桑平措[1] 王新卫[2] 曾秀丽[1] CUI Yongning;ZHANG Shanshan;WANG Lirong;ZHAO Fan;Gesangpingcuo;WANG Xinwei;ZENG Xiuli(Institute of Vegetable,Tibetan Autonomous Region Academy of Agricultural and Pastoral Sciences/Scientific observation and experiment station of fruit trees on Qinghai-tibet plateau,Ministry of Agriculture,Tibet Lhasa 850032,China;Zhengzhou Fruit Tree Research Institute,Chinese Acad-emy of Agricultural Sciences,Henan Zhengzhou 450009,China)

机构地区：[1]西藏自治区农牧科学院蔬菜研究所/农业部青藏高原果树科学观测实验站,西藏拉萨850032 [2]中国农业科学院郑州果树研究所,河南郑州450009

出　　处：《西藏农业科技》2024年第4期68-72,共5页Tibet Journal of Agricultural Sciences

基　　金：“果树新品种引进选育与高效技术研究示范”项目(藏科发〔2017〕72号);农业部公益性行业(农业)科研专项(201303093)。

摘　　要：分析光核桃花粉粒形态变化特征,揭示其种质资源内部花粉进化规律。对西藏47份光核桃种质资源的花粉粒进行电镜扫描观察结果发现,有10个材料的光核桃花粉粒外壁形态呈椭圆球形,外壁纹饰呈简单的直纹平行型,穿孔较少或没有,这些材料最为原始;有9个材料的花粉粒外部形态特征条纹复杂,纹孔较多且密,与较为原始材料比较属于进化类型;其他材料则介于两类之间。光核桃资源不是都处于原始阶段,其内部发生了进化,不同类型的资源为光核桃新品种选育和研究提供了丰富的材料。This paper analyze the morphological changes of Prunus mira Koehne pollen grains and revealed the evolutionary patterns of pollen within their germplasm resources.Pollen grains of 47 accessions of Juglans glabra in Xizang were observed by scanning electron microscope.The outer wall morphology of the Prunus mira Koehne pollen grains with 10 materials were elliptical spherical,and the outer wall decoration were simple straight parallel pattern with few or no perforations.These materials were the most primitive.The external morphological characteristics of pollen grains in 9 materials were characterized by complex stripes,numerous and dense pores,which belong to the evolutionary type compared to more primitive materials.While other materials were between the two categories.Not all Prunus mira Koehne resources were in the primitive stage,but have undergone internal evolution.Different types of resources provided abundant materials for the breeding and research of new Prunus mira Koehne varieties.

关 键 词：光核桃 电镜扫描 花粉形态 进化 

分 类 号：S664.1[农业科学—果树学]