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Genome constitutions of Roegneria alashanica , R . elytrigioides , R . magnicaespes and R . grandis (Poaceae: Triticeae) via genomic in‐situ hybridization
Author(s) -
Yu HaiQing,
Zhang Chun,
Ding ChunBang,
Zhang HaiQin,
Zhou YongHong
Publication year - 2010
Publication title -
nordic journal of botany
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.333
H-Index - 33
eISSN - 1756-1051
pISSN - 0107-055X
DOI - 10.1111/j.1756-1051.2009.00611.x
Subject(s) - biology , triticeae , genome , agropyron , agropyron cristatum , genus , botany , elymus , genetics , poaceae , gene
The genomic constitutions of Roegneria alashanica , R. elytrigioides , R. magnicaespes and R. grandis were studied using GISH. DNA of Pseudoroegneria spicata (St), P. libanotica (St), P. stipifolia (St), R. ciliaris (StY), Lopophyllum elongatum (E e ), Agropyron cristatum (P) and Hordeum bogdanii (H) were used for probing, respectively. The results indicated that: 1) R. alashanica and R. magnicaespes contained one St genome, the other genome was unidentified, however, it was not an E, P, H or Y genome; 2) R. elytrigioides contained two St genomes and should on this basis be included in Pseudoroegneria ; 3) R. grandis contained an St and an St g genome. The St g genome is suggested to be a modified form of the St genome of Pseudoroegneria and to be homoeologous with the Y genome. It might be an intermediate type between the St and Y genomes. Therefore, R. elytrigioides should be treated as Pseudoroegneria elytrigioides. Roegneria alashanica , R. magnicaespes and R. grandis does apparently not belong in the genus Roegneria but further studies are needed to establish their correct taxonomic position.