LU Xue-jia
Research Institute of Resource Insects, Chinese Academy of Forestry, Kunming 650224, ChinaLIU Fang-yan
Research Institute of Resource Insects, Chinese Academy of Forestry, Kunming 650224, ChinaGAO Cheng-jie
Research Institute of Resource Insects, Chinese Academy of Forestry, Kunming 650224, ChinaLI Kun
Research Institute of Resource Insects, Chinese Academy of Forestry, Kunming 650224, ChinaTo understand the embryological characteristics of Dodonaea viscosa in the dry and hot valley and the reasons for its low seed setting rate, microsporogenesis, male gametophyte development and pollen morphological characteristics of D. viscosa were studied with traditional paraffin sections and scanning electron microscopy. The results showed that the anther of D. viscosa had four pollen sac. The anther wall was composed of the epidermis, the endothecium, 2-3 middle layers, and tapetum (glandular tapetum) from the outside to the inside; at anther mature stage, the middle layer and tapetum denegerated and disappeared. The cytokinesis occurred simultaneously in a microspore mother cell; the tetrad was tetrahedral. The mature pollen was two-celled type. The mature pollen grain was nearly spherical with granular ornamentation on exine and 3 germ furrows which did not form syncolpate. Our researches showed that some abnormal phenomenon in male reproductive development might be one of the reasons of low seed setting rate.
卢雪佳,刘方炎,高成杰,李昆.车桑子小孢子发生与雄配子体发育[J].热带亚热带植物学报,2019,27(2):181~186
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