文献类型：期刊文献

英文题名：Pollen morphology and its phylogenetic implications in the genus Picea

作者：Jia, Zi Rui[1,2] Wang, Jun Hui[1,2] Zhang, Shou Gong[1,2]

第一作者：贾子瑞

通信作者：Wang, JH[1]

机构：[1]Chinese Acad Forestry, State Key Lab Tree Genet & Breeding, Beijing 100091, Peoples R China;[2]Chinese Acad Forestry, Forestry Res Inst, Beijing 100091, Peoples R China

年份：2014

卷号：300

期号：3

起止页码：461-473

外文期刊名：PLANT SYSTEMATICS AND EVOLUTION

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000330988400006)】；

基金：We wish to thank Ma Changgeng (Forestry Research Institute, Chinese Academy of Forestry, in Beijing, China) for the precious comments made on an earlier version of this article. We are also grateful to Xiao Yinhou (Institute of Botany, the Chinese Academy of Sciences, in Beijing, China) for help in the scanning electron microscopy. This work was financially supported by the Phylogeny in Spruce from Orangelle and Nuclear Genomes of National natural Science Foundation of China (NSFC 31271265), and by the Phylogeny in Spruce from Orangelle Genomes of Grant (R-2175).

语种：英文

外文关键词：Picea; Pollen morphology; Scanning electron microscopy; Phylogeny

摘要：Pollen grains from 20 spruce species were examined using scanning electron microscopy, to study the phylogeny of pollen morphology in spruce. Morphological characteristics of the pollen were examined among different species based on statistical data and photographic observation. The mean pollen size of 20 spruce species ranged from 84.327 to 118.793.18 mu m. Based on morphological photography, two zygomorphic bladders were distributed on the underside of the corpus and were found at the edge of the cap near the corpus surface. The bladder's surface texture was smooth and had no distinct variations among species. Germinal furrows formed clear striates between the two bladders. According to clustering analysis, 20 spruce species were classified into three sections, namely, Castict, Schrenkiana and Picea, and the Picea section was classified into two subsections, Jezonensis and Picea. Corpus veins experienced notable differentiation among sections, and their evolutionary trend progressed through sections Castict, Schrenkiana and Picea. Within subsection Picea, parallel evolution occurred between the two subsections.