Two independent gene loci controlling non-brittle pedicels in buckwheat

Matsui, Kenichi; Tetsuka, Takahisa; Hara, Takahiro

doi:10.1023/b:euph.0000003911.70493.cd

Cited by 22 publications

(14 citation statements)

References 14 publications

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“…A simple genetic base was reported in various crops, such as barley (Takahashi 1955), pearl millet (Ponecet et al 2000), common bean (Koinange et al 1996) and buckwheat (Matsui et al 2003), suggesting that the change to the non-shattering habit exerted a more pronounced effect on the domestication processes than the other genetic changes. Recent genome-wide QTL analysis between cultivated and wild rice, however, has revealed the complex nature of the seed-shattering habit, with QTLs detected on eight chromosomes of the rice genome (Xiong et al 1999, Cai and Morishima 2002, Thomson et al 2003, Lee et al 2005, Li et al 2006a.…”

Section: Discussionmentioning

confidence: 99%

A QTL Cluster for Plant Architecture and Its Ecological Significance in Asian Wild Rice

et al. 2007

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The wild progenitor (Oryza rufipogon) of Asian rice (Oryza sativa) shows a wide range of variations in lifehistory traits, forming an annual-perennial continuum. A conspicuous feature of an annual type of wild rice is represented by its adaptability to disturbed habitats, and its short stature with many tillers and a prostrate growth habit. The present study was carried out to examine the genetic differentiation between wild annual and cultivated (Japonica type) rice strains by quantitative trait locus (QTL) analysis. In total, 20 adaptive and/ or domestication-related traits were evaluated in recombinant inbred lines (RILs). A total of 28 putative QTLs were detected across the genome. Six QTLs responsible for plant architecture were located on the short arm of chromosome 7. The near-isogenic line with the region containing the QTL cluster confirmed that the QTLs exerted a significant effect on the plant architecture in the genetic background of cultivated rice. A similar QTL cluster was also found in another annual strain of a different origin, suggesting that the QTL cluster might be predominant in annual wild rice. Furthermore, a QTL for tolerance to disturbance (simulated trampling) was detected within the region of the cluster on chromosome 7. These results are discussed in relation to their ecological significance in wild annuals of rice.

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Section: Discussionmentioning

confidence: 99%

A QTL Cluster for Plant Architecture and Its Ecological Significance in Asian Wild Rice

et al. 2007

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“…Further improvement in PHS tolerance in buckwheat would be necessary, because higher air temperatures, expected in global warming, raise the risk of preharvest sprouting . In addition to the cultivars with low preharvest sprouting mentioned above, a wild species F. homotropicum, known for its very strong seed dormancy (Wang and Campbell 2000) and compatibility to F. esculentum, should be a promising gene donor, although its extreme shattering habit (brittle pedicel) would need to be removed (Matsui et al 2003). In other crops like wheat, barley, maize, and rice, genetic analysis of preharvest sprouting and dormancy has discovered many QTLs and some causal genes (Nakamura 2018).…”

Section: Preharvest Sproutingmentioning

confidence: 99%

Important agronomic characteristics of yielding ability in common buckwheat; ecotype and ecological differentiation, preharvest sprouting resistance, shattering resistance, and lodging resistance

Morishita

Hara

2020

Breed. Sci.

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Common buckwheat is recognized as a healthy food because its seed contains large amounts of protein, minerals, and rutin. However, the yielding ability of common buckwheat is lower than that of other major crops. The short growing period, moisture injury, occurrence of sterile seeds due to lack of flower-visiting insects, and yield loss due to lodging and shattering cause low and unstable grain yield. Therefore, many common buckwheat breeders have tried to increase yielding ability by improving various characteristics. Recently, new breeding objectives for improving yielding ability by increasing preharvest sprouting resistance; reducing shattering loss; introducing self-compatibility; the ecotype, and semidwarf have been reported. In this review, we introduce the research on the important agronomic characteristics, preharvest sprouting resistance, ecotype and ecological differentiation, shattering resistance, and lodging resistance in common buckwheat.

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“…Lines H and I were developed by selfing a single pin plant that segregated in F 3 . All the inbred lines were indirectly related to a homostyle plant (Y12-20) that was thought to be homozygous for a shattering-resistance gene (sht1sht1) (Matsui et al 2003a) and were the progeny obtained by either a single cross or recurrent crosses with a major or local variety in northern Japan (Table 1).…”

Section: Development Of Inbred Linesmentioning

confidence: 99%

“…Thereafter, it has been revealed that the homostyly of F. homotropicum and heterostyly of common buckwheat are controlled by the multiple allelic gene S and the homostyle flower morph, and the self-compatibility of F. homotropicum is governed by the allele S h that is characterized by the dominance relation: S [ S h [ s (Woo et al 1999;Wang et al 2005). Besides, several important characteristics such as the inheritance of seed shattering (Matsui et al 2003a) and cross-compatibility between the flower morphs (Matsui et al 2003b(Matsui et al , 2004 have been studied. In the past decade, pure-line breeding of the selfpollinating buckwheat with homostyle flower morph has also been aggressively conducted, especially in Canada.…”

Section: Introductionmentioning

confidence: 99%

A methodology for heterosis breeding of common buckwheat involving the use of the self-compatibility gene derived from Fagopyrum homotropicum

2009

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We propose an alternative breeding methodology for common buckwheat (Fagopyrum esculentum Moench), involving the use of the selfcompatibility (S h ) gene derived from F. homotropicum Ohnishi. This methodology involves inbred development of homostyle (S h S h ) and pin (ss) lines by using the self-compatibility gene (S h ). Further, single-cross hybrid seeds are produced using these inbred homostyle and pin lines as pollen and seed parents, respectively. This strategy successfully produced self-compatible homostyle hybrids (S h s); the percentage of hybrid plants among the progeny was more than 90%. In a greenhouse trial, the heterosis (best parent) in top dry weight, including stem and leaves, was 29.1-48.1% during the early growth stage. The seed yield of the progeny obtained in single-cross experiments was superior to that of an open-pollinated standard variety ''Kitawasesoba'' by 10% on average. These results suggest that heterosis breeding can be used to increase seed yield in common buckwheat.

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Two independent gene loci controlling non-brittle pedicels in buckwheat

Cited by 22 publications

References 14 publications

A QTL Cluster for Plant Architecture and Its Ecological Significance in Asian Wild Rice

A QTL Cluster for Plant Architecture and Its Ecological Significance in Asian Wild Rice

Important agronomic characteristics of yielding ability in common buckwheat; ecotype and ecological differentiation, preharvest sprouting resistance, shattering resistance, and lodging resistance

A methodology for heterosis breeding of common buckwheat involving the use of the self-compatibility gene derived from Fagopyrum homotropicum

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