A New Species of Roegneria (Poaceae: Triticeae) from Tibet

Yang, Junliang; Zhou, Yong‐Hong

doi:10.2307/3391663

Cited by 3 publications

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“…The tetraploid species P. alashanica and P. elytrigioides were closely related based on morphological and cytological evidence (Lu 1994;Cai 1997). Morphologically, P. alashanica and P. elytrigioides were first recognized as the species of Roegneria (Keng 1959;Yen & Yang 1984). Lu (1994) reported the genomic constitutions of R. elytrigioides as StSt and combined it to Pseudoroegneria.…”

Section: Phylogenetic Relationships Of Polyploid Pseudoroegneria Speciesmentioning

confidence: 99%

Phylogenetic relationships of species in Pseudoroegneria (Poaceae: Triticeae) and related genera inferred from nuclear rDNA ITS (internal transcribed spacer) sequences

Fan

Zhang

et al. 2008

Biologia

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To evaluate the phylogenetic relationships of species in Pseudoroegneria and related genera, the nuclear ribosomal internal transcribed spacer (ITS) sequences were analyzed for eighteen Pseudoroegneria (St), two Elytrigia (E e St), two Douglasdeweya (StP), three Lophopyrum (E e andE b ), three Agropyron (P), two Hordeum (H), two Australopyrum (W) and two Psathyrostachys (Ns) accessions. The main results were: (i) Pseudoroegneria gracillima, P. stipifolia, P. cognata and P. strigosa (2x) were in one clade, while P. libanotica, P. tauri and P. spicata (2x) were in the other clade, indicating there are the differentiations of St genome among diploid Pseudoroegneria species; (ii) P. geniculata ssp. scythica, P. geniculata ssp. pruinifera, Elytriga caespitosa and Et. caespitosa ssp. nodosa formed the E e St clade with 6-bp indel in ITS1 regions; and (iii) Douglasdeweya wangii, D. deweyi, Agropyron cristatum and A. puberulum comprised the P clade. It is unreasonable to treat P. geniculata ssp. scythica and P. geniculata ssp. pruinifera as the subspecies of P. geniculata, and they should be transferred to a new genus Trichopyrum, which consists of species with E e St genomes. It is also suggested that one of the diploid donor of D. wangii and D. deweyi is derived from Agropyron species, and it is reasonable to treat tetraploid species with StP genomes into Douglasdeweya.

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Section: Phylogenetic Relationships Of Polyploid Pseudoroegneria Speciesmentioning

confidence: 99%

Phylogenetic relationships of species in Pseudoroegneria (Poaceae: Triticeae) and related genera inferred from nuclear rDNA ITS (internal transcribed spacer) sequences

Fan

Zhang

et al. 2008

Biologia

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Biosystematic study ofRoegneria tenuispica, R. ciliaris andR. pendulina (Poaceae:Triticeae)

et al. 1999

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The Domestication Syndrome Genes Responsible for the Major Changes in Plant Form in the Triticeae Crops

Sakuma

Salomon

Komatsuda

2011

Plant and Cell Physiology

104

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The process of crop domestication began 10,000 years ago in the transition of early humans from hunter/gatherers to pastoralists/farmers. Recent research has revealed the identity of some of the main genes responsible for domestication. Two of the major domestication events in barley were (i) the failure of the spike to disarticulate and (ii) the six-rowed spike. The former mutation increased grain yield by preventing grain loss after maturity, while the latter resulted in an up to 3-fold increase in yield potential. Here we provide an overview of the disarticulation systems and inflorescence characteristics, along with the genes underlying these traits, occurring in the Triticeae tribe.

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A New Species of Roegneria (Poaceae: Triticeae) from Tibet

Cited by 3 publications

References 1 publication

Phylogenetic relationships of species in Pseudoroegneria (Poaceae: Triticeae) and related genera inferred from nuclear rDNA ITS (internal transcribed spacer) sequences

Phylogenetic relationships of species in Pseudoroegneria (Poaceae: Triticeae) and related genera inferred from nuclear rDNA ITS (internal transcribed spacer) sequences

Biosystematic study ofRoegneria tenuispica, R. ciliaris andR. pendulina (Poaceae:Triticeae)

The Domestication Syndrome Genes Responsible for the Major Changes in Plant Form in the Triticeae Crops

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