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Genetic relationship between the 'Korla fragrant pear' and local pear varieties in xinjiang based on floral organ characteristics

文献类型： 外文期刊

作者： Niu, Yingying 1 ; Chen, Xiangying 1 ; Zhou, Weiquan 1 ; Li, Wenwen 1 ; Zhao, Shirong 1 ; Nasir, Mansur 1 ; Dong, Sheng 1 ;

作者机构： 1.Xinjiang Agr Univ, Coll Hort & Forestry, Urumqi 830052, Xinjiang, Peoples R China

2.Xinjiang Acad Agr Sci, Turpan Res Inst Agr Sci, Turpan 838000, Xinjiang, Peoples R China

3.Xinjiang Acad Agr Sci, Luntai Natl Fruit Germplasm Resources Garden, Luntai 841600, Xinjiang, Peoples R China

关键词： Pyrus sinkiangensis Yu.; Korla fragrant pear; Floral organ; Pollen microscopic characteristics; Genetic relationship

期刊名称：SCIENTIA HORTICULTURAE （ 影响因子：3.463； 五年影响因子：3.672 ）

ISSN： 0304-4238

年卷期： 2019 年 257 卷

页码：

收录情况： SCI

摘要： The characters of floral organ and pollen of local pear varieties in Xinjiang, such as the 'Korla fragrant pear' and 39 other varieties or types, Pyrus bretschneideri Rehd., Pyrus pyrifolia Nakai., and Pyrus communis L. were measured and described. The genetic relationships between the `Korla fragrant pear' and other local pear varieties in Xinjiang were analyzed by clustering. The number of flowers per inflorescence of varieties or types was approximately 7.6, and the difference in the number of stamens was small. Except for 'Aiwenqieke', 'Qipanli' and 'Daxiangshui', which had no pollen, the pollen quantity of the varieties or types was 1000.0-5000.0 grains. The pollen grains were isopolar and radiation symmetrical single-grain. The pollen grains had three germination furrows, and the main type of pollen grain exine ornamentation was stripe ornamentation. According to Erdtman's NPC classification system, the pear pollen was of the N3P4C5 type. According to the clustering results, there was high similarity between the 'Korla fragrant pear' and Pyrus sinkiangensis Yu. The 'Korla fragrant pear' clustered with most local varieties in Xinjiang, and a genetic relationship between P. bretschneideri and P. pyrifolia was observed. There were interspecific and variety or type differences in floral organ and pollen morphology between P. sinkiangensis and P. bretschneideri, P. pyrifolia, Pyrus ussuriensis Maxim., P. communis and Pyrus betulifolia Bunge. There were many similarities between the 'Korla fragrant pear' and local pear varieties in Xinjiang, which should be classified within the P. sinkiangensis system.

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