文献类型： 外文期刊
作者： Li, Wenwen 1 ; Wang, Yanan 1 ; Liu, Liqiang 1 ; Niu, Yingying 1 ; Zhao, Shirong 1 ; Zhang, Shikui 2 ; Wang, Yatong 2 ; Li 1 ;
作者机构： 1.Xinjiang Agr Univ, Coll Hort & Forestry, Urumqi, Peoples R China
2.Xinjiang Acad Agr Sci, Luntai Natl Fruit Germplasm Resources Garden, Luntai, Peoples R China
关键词： Apricot; ecological group; pollen morphology; light microscopy; scanning electron microscopy
期刊名称：PALYNOLOGY （ 影响因子：2.344； 五年影响因子：1.98 ）
ISSN： 0191-6122
年卷期：
页码：
收录情况： SCI
摘要： The purposes of this study were to provide palynological information about apricots and to reveal the relationships among six ecological groups of apricots by describing the morphological characteristics of their pollen. The pollen grains of 175 accessions belonging to three species (Prunus armeniaca L., Prunus sibirica L., and Prunus mume Sieb. et Zucc.) of Prunus were examined using light microscopy and scanning electron microscopy. The pollen grains were isopolar monads, radially symmetric, medium to large in size, prolate or subprolate, and 3-colporate. Most pollen grains exhibited striate exine ornamentation, and a few exhibited striato-reticulate or cerebroid exine ornamentation. Cluster analysis divided the six ecological groups into two groups: one including the Central Asian, North China, and Dzhungar-Ili ecological group accessions and another including the Northeast Asian, European, and East China ecological group accessions. Principal component analysis revealed that equatorial diameter, colpus length, colpus width, and ridge width were the most important metrical pollen traits, and can be used as powerful diagnostic characters in apricot identification. We speculated that the cultivated apricots in Xinjiang were domesticated from wild apricots from the Ili Valley. This study describes the morphological characteristics of apricot pollen grains and provides some morphological information for future studies on the phylogenetic relationships of apricots.
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