High-resolution mapping of grh6, a gene from oryza nivara (Sharma et shastry) conferring resistance to green rice leafhopper (nephotettix cincticeps uhler)

Cong Nguyen Phi, Daisuke Fujita, Yoshiyuki Yamagata, Atsushi Yoshimura, Hideshi Yasui

研究成果: ジャーナルへの寄稿学術誌査読

2 被引用数 (Scopus)

抄録

The green rice leafhopper (GRH), Nephotettix cincticeps Uhler, is a major insect pest of cultivated rice, Oryza sativa L., throughout the temperate regions of East Asia. GRH resistance had been reported in the wild species Oryza nivara but genetic basis of GRH resistance in wild rice accession has not been clarified. Here, we found a major QTL, qGRH4.2, on chromosome 4 conferred GRH resistance with 14.1 of the logarithm of odds (LOD) score explaining 67.6% of phenotypic variance in the BC1F1 population derived from a cross between the susceptible japonica cultivar ‘Taichung 65’ (T65) and O. nivara accession IRGC105715. qGRH4.2 has been identified as GRH6 between the markers RM5414 and C60248 in a BC3F2 population derived from two BC3F1 plants resistant to GRH. In a high-resolution mapping, the GRH6 region was delimited between the markers G6-c60k and 7L16f, and corresponded to an 31.2-kbp region of the ‘Nipponbare’ genome. Understanding the genetic basis of GRH resistance will facilitate the use of GRH resistance genes in marker-assisted breeding in rice.

本文言語英語
ページ(範囲)439-446
ページ数8
ジャーナルBreeding Science
69
3
DOI
出版ステータス出版済み - 2019

!!!All Science Journal Classification (ASJC) codes

  • 農業および作物学
  • 遺伝学
  • 植物科学

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