23 juillet 19301930/07/23 (N688)-1930/07/23.Appartient à l’ensemble documentaire : Aquit

Dongryung Lee (4766991)

Gileung Lee (4263064)

Hee-Jong Koh (45781)

Jeonghwan Seo (4766988)

Joong Chin (4263073)

Su Jang (3706168)

Yoye Yu (519281)

Yunjoo Lee (4263067)

BMC Genetics

Background
                Balancing panicle-related traits such as panicle length and the numbers of primary and secondary branches per panicle, is key to improving the number of spikelets per panicle in rice. Identifying genetic information contributes to a broader understanding of the roles of gene and provides candidate alleles for use as DNA markers. Discovering relations between panicle-related traits and sequence variants allows opportunity for molecular application in rice breeding to improve the number of spikelets per panicle.
                            
                Results
                In total, 142 polymorphic sites, which constructed 58 haplotypes, were detected in coding regions of ten panicle development gene and 35 sequence variants in six genes were significantly associated with panicle-related traits. Rice cultivars were clustered according to their sequence variant profiles. One of the four resultant clusters, which contained only indica and tong-il varieties, exhibited the largest average number of favorable alleles and highest average number of spikelets per panicle, suggesting that the favorable allele combination found in this cluster was beneficial in increasing the number of spikelets per panicle.
                            
                Conclusions
                Favorable alleles identified in this study can be used to develop functional markers for rice breeding programs. Furthermore, stacking several favorable alleles has the potential to substantially improve the number of spikelets per panicle in rice.This work was supported by a grant from the Next-Generation BioGreen 21 Program (Plant Molecular Breeding Center, No. PJ013165), Rural Development Administration, Republic of Korea

Jang, Su

Lee, Yunjoo

Lee, Gileung

Seo, Jeonghwan

Lee, Dongryung

Yu, Yoye

Chin, Joong Hyoun

Koh, Hee-Jong

SNU Open Repository and Archive

Association between sequence variants in panicle development genes and the number of spikelets per panicle in rice

Distributions of the panicle size of 205 varieties and 45 selected varieties. (PDF 296Â kb

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Additional file 1: of Association between sequence variants in panicle development genes and the number of spikelets per panicle in rice

Summary of statistics for four traits of 45 varieties. (XLSX 10Â kb

Additional file 6: of Association between sequence variants in panicle development genes and the number of spikelets per panicle in rice

Plots of Evannoâs delta K (âK). (PDF 115Â kb

Additional file 8: of Association between sequence variants in panicle development genes and the number of spikelets per panicle in rice

FASTA format files containing coding sequences for 9 genes. (ZIP 19Â kb

Additional file 4: of Association between sequence variants in panicle development genes and the number of spikelets per panicle in rice

Gallica, Bibliotheque Numerique

L'Athlète : journal hebdomadaire de tous les sports

General information for total accessions used in this study. (XLSX 16Â kb

Additional file 2: of Association between sequence variants in panicle development genes and the number of spikelets per panicle in rice

Abstract Background Balancing panicle-related traits such as panicle length and the numbers of primary and secondary branches per panicle, is key to improving the number of spikelets per panicle in rice. Identifying genetic information contributes to a broader understanding of the roles of gene and provides candidate alleles for use as DNA markers. Discovering relations between panicle-related traits and sequence variants allows opportunity for molecular application in rice breeding to improve the number of spikelets per panicle. Results In total, 142 polymorphic sites, which constructed 58 haplotypes, were detected in coding regions of ten panicle development gene and 35 sequence variants in six genes were significantly associated with panicle-related traits. Rice cultivars were clustered according to their sequence variant profiles. One of the four resultant clusters, which contained only indica and tong-il varieties, exhibited the largest average number of favorable alleles and highest average number of spikelets per panicle, suggesting that the favorable allele combination found in this cluster was beneficial in increasing the number of spikelets per panicle. Conclusions Favorable alleles identified in this study can be used to develop functional markers for rice breeding programs. Furthermore, stacking several favorable alleles has the potential to substantially improve the number of spikelets per panicle in rice

L'Athlète : journal hebdomadaire de tous les sports

Abstract

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Gallica, Bibliotheque Numerique

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