Fagopyrum wenchuanenseandFagopyrum qiangcai, Two New Species of Polygonaceae from Sichuan, China

Shao, Ji-Rong; Zhou, Meiliang; Zhu, Xuemei; Wang, De-Zhou; Bai, Da-Quan

doi:10.3417/2009107

Cited by 28 publications

(18 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Both distyly and homostyly have been noted in previous studies of Fagopyrum (Darwin, 1877; Ohnishi, 1989; Ohnishi and Matsuoka, 1996; Nishimoto et al, 2003; Liu et al, 2008; Shao et al, 2011), but quantification of the reproductive system involved only the large‐achene group of buckwheat that includes F. dibotrys (Chen et al, 2014) and F. esculentum (Samborska‐Ciania et al, 1989; Björkman, 1995; Cawoy et al, 2006), while floral traits in F. tataricum and the small‐achene group of buckwheat have not before been examined. Compared to six species in the small‐achene group, flowers of the large‐achene group were significantly larger (test of corolla diameter, Wald χ 2 = 873.…”

Section: Discussionmentioning

confidence: 64%

Transitions from distyly to homostyly are associated with floral evolution in the buckwheat genus (Fagopyrum)

Wang

Schoen

et al. 2017

American J of Botany

View full text Add to dashboard Cite

show abstract

Section: Discussionmentioning

confidence: 64%

Transitions from distyly to homostyly are associated with floral evolution in the buckwheat genus (Fagopyrum)

Wang

Schoen

et al. 2017

American J of Botany

View full text Add to dashboard Cite

show abstract

“…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: 86%

“…1a (Shao et al 2011). The somatic chromosomes of F. wenchuanense 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 Wenchuanense J R Shaomentioning

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: 98%

See 1 more Smart Citation

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

et al. 2012

Self Cite

View full text Add to dashboard Cite

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.

show abstract

“…F. qiangcai was found at Kaku village, Wenchuan, where F. pleioramosum and F. callianthum distribute (Shao et al 2011). F. qiangcai bears heterostylous flowers with pink perianths and sagittate leaves with red veins.…”

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

confidence: 99%

Classification and systematics of the Fagopyrum species

Ohsako

2020

Breed. Sci.

View full text Add to dashboard Cite

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.

show abstract

Fagopyrum wenchuanenseandFagopyrum qiangcai, Two New Species of Polygonaceae from Sichuan, China

Cited by 28 publications

References 0 publications

Transitions from distyly to homostyly are associated with floral evolution in the buckwheat genus (Fagopyrum)

Transitions from distyly to homostyly are associated with floral evolution in the buckwheat genus (Fagopyrum)

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

Contact Info

Product

Resources

About