Fagopyrum pugense (Polygonaceae), a New Species from Sichuan, China

Yu, Tao; Zhou, Meiliang; Bai, Da-Quan; Shao, Ji-Rong; Zhu, Xuemei; Wang, De-Zhou; Tang, Yixiong

doi:10.3417/2008072

Cited by 25 publications

(9 citation statements)

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“…odontopterum and F. gracilipes are tetraploid (2n = 4x = 32) (Tang et al 2010;Yang et al 2010). In this research, we found that F. wenchuanense, F. qiangcai and F. pugense are diploid (2n = 2x = 16) (Tang et al 2010;Shao et al 2011), F. crispatofolium is tetraploid (2n = 4x = 32), F. qiangcai has one pair of satellite RNAs, and F. crispatofolium also has one pair of satellite RNAs, but their satellite RNAs have different positions and numbers. The karyotypes of F. wenchuanense, F. crispatofolium and F. pugense are 1A type, but F. qiangcai is 2A type.…”

Section: Discussionmentioning

confidence: 99%

“…1b (Tang et al 2010). The somatic chromosomes of F. pugense indicate that the species is diploid with a chromosome number of 2n = 2x = 16, and all 16 chromosomes are metacentric with no satellites.…”

Section: Fagopyrum Pugense T Yumentioning

confidence: 99%

“…Recently four new species, Fagopyrum crispatifolium J. L. Liu (Liu et al 2008), F. pugense T. Yu (Tang et al 2010), F. qiangcai D. Q. Bai and F. wenchuanense J. R. Shao (Shao et al 2011), were discovered in the genus Fagopyrum, and their distribution and taxonomic position in Sichuan province (China) have been clarified (Liu et al 2008;Tang et al 2010;Shao et al 2011). The purpose of this study was to investigate phylogenetic relationships among new and already known buckwheat species of the southwestern Sichuan province from the viewpoints of karyotype, allozyme variability, and ISSR molecular markers.…”

Section: Introductionmentioning

confidence: 99%

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Genetic diversity of four new species related to southwestern Sichuan buckwheats as revealed by karyotype, ISSR and allozyme characterization

et al. 2012

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The genetic diversity of four new species related to southwestern Sichuan buckwheats was examined using karyotypes, allozymes and intersimple sequence repeats (ISSR). Karyotype analysis showed that Fagopyrum wenchuanense, F. qiangcai and F. pugense are diploid (2n = 2x = 16) while F. crispatofolium is tetraploid (2n = 4x = 32). The karyotype evolutionary trend of buckwheat indicated that F. crispatofolium, F. gracilipes var. odontopterum and F. gracilipes seemed to be more advanced than F. wenchuanense, F. qiangcai, F. pugense, F. esculentum, F. cymosum and F. tataricumare. Three polymorphic enzyme systems were used for the examination of variation, including peroxidase, esterase and superoxide dismutase. Consistent banding patterns were obtained for esterase and superoxide dismutase, while peroxidase produced a large number of sharp bands. A total of 18 ISSR primers were selected for the analysis and showed high variations among the species. Allozymes and ISSR markers were utilized to estimate the genetic distance among accessions and to draw phylogenetic trees. Our data provide evidence of a high degree of genetic diversity among southwestern Sichuan buckwheats. In addition, both cultivars and wild types showed a high degree of divergence suggesting a complex domestication process in this crop. This study provides a better understanding of evolutionary mechanisms and genetic relationships in four new species of buckwheat.

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Section: Discussionmentioning

confidence: 99%

Section: Fagopyrum Pugense T Yumentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Genetic diversity of four new species related to southwestern Sichuan buckwheats as revealed by karyotype, ISSR and allozyme characterization

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“…Recently Zhou and colleagues reported several new species, most of which possibly belong to the urophyllum group. F. pugense (Tang et al 2010) was first found in Luojishan, Puge county, Sichuan. This species is reported to show similar morphology to F. gracilipes whereas the chromosome number is 2n = 16.…”

Section: Recent Discovery Of the New Species Of Fagopyrum And Their Smentioning

confidence: 99%

Classification and systematics of the <i>Fagopyrum</i> species

Ohsako

2020

Breed. Sci.

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Fagopyrum (Polygonaceae) is a small genus including less than 30 species, mostly endemic to southern China. The genus includes two cultivated species, common buckwheat F. esculentum and Tartary buckwheat F. tataricum. Fagopyrum is clearly distinguished from other genus in Polygonaceae by the central position of embryo in achene. The genus is divided into two major groups, namely the cymosum group and the urophyllum group, based on morphological characters and molecular systematics. In the last three decades the number of species in the genus has doubled by the discovery of new species by Japanese and Chinese groups. Most of them are revealed to be included in the urophyllum group based on morphological and molecular genetic analyses. Molecular systematic surveys have also detected inappropriate treatment of some non-Fagopyrum species as new species or combination in the genus.

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“…Molecular systematic research and genome studies in the last two decades have discovered new species and their proper classification into the genus Fagopyrum ( Table 1 ) [ 2 , 4 , 28 , 30 , 31 , 32 , 33 , 34 , 35 , 36 , 37 , 38 , 39 , 40 , 41 , 42 , 43 ].…”

Section: Introductionmentioning

confidence: 99%

Biotechnological Methods for Buckwheat Breeding

Luthar

Fabjan

Mlinarič³

2021

Plants

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The Fagopyrum genus includes two cultivated species, namely common buckwheat (F. esculentum Moench) and Tartary buckwheat (F. tataricum Gaertn.), and more than 25 wild buckwheat species. The goal of breeders is to improve the properties of cultivated buckwheat with methods of classical breeding, with the support of biotechnological methods or a combination of both. In this paper, we reviewed the possibility to use transcriptomics, genomics, interspecific hybridization, tissue cultures and plant regeneration, molecular markers, genetic transformation, and genome editing to aid in both the breeding of buckwheat and in the identification and production of metabolites important for preserving human health. The key problems in buckwheat breeding are the unknown mode of inheritance of most traits, associated with crop yield and the synthesis of medicinal compounds, low seed yield, shedding of seeds, differential flowering and seed set on branches, and unknown action of genes responsible for the synthesis of buckwheat metabolites of pharmaceutical and medicinal interest.

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Fagopyrum pugense (Polygonaceae), a New Species from Sichuan, China

Cited by 25 publications

References 0 publications

Genetic diversity of four new species related to southwestern Sichuan buckwheats as revealed by karyotype, ISSR and allozyme characterization

Genetic diversity of four new species related to southwestern Sichuan buckwheats as revealed by karyotype, ISSR and allozyme characterization

Classification and systematics of the <i>Fagopyrum</i> species

Biotechnological Methods for Buckwheat Breeding

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