Fagopyrum longistylum (Polygonaceae), a new species from Sichuan, China

被引：0
作者：
Zhang, Kaixuan [1 ]
Fan, Yu [1 ]
Weng, Wenfeng [1 ]
Tang, Yu [1 ,2 ]
Zhou, Meiliang [1 ]
机构：
[1] Chinese Acad Agr Sci, Inst Crop Sci, Beijing 100081, Peoples R China
[2] Sichuan Tourism Univ, Coll Food Sci & Technol, Chengdu 610100, Peoples R China
来源：
PHYTOTAXA | 2021年 / 482卷 / 02期
基金：
国家重点研发计划;
关键词：
Buckwheat; Fagopyrum F. gracilipes; new species; MORPHOLOGY; BUCKWHEAT; EVOLUTION; REGION;
D O I：
10.11646/phytotaxa.482.2.5
中图分类号：
Q94 [植物学];
学科分类号：
071001 ;
摘要：
A new species of Fagopyrum (Polygonaceae), Fagopyrum longistylum, is described and illustrated from Huili County, Sichuan Province, China on the basis of morphological, caryological, and molecular data. F. longistylum is morphologically similar to F. gracilipes from which it differs in having green stem and short-styled flowers with long anther but it is self compatible. In addition, F. longistylum is a diploid species with 2n=2x=16 while F. gracilipes is tetraploid with 4n=4x=32. Molecular data based on nucleotide sequence polymorphisms of internal transcribed spacers (ITSs) and the maturase K (matK) gene confirm the separation of the new species.
引用
收藏
页码：173 / 182
页数：10
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