In:
Plant Breeding, Wiley, Vol. 137, No. 5 ( 2018-10), p. 698-705
Abstract:
Rice black‐streaked dwarf virus disease ( RBSDVD ), transmitted by small brown planthopper ( SBPH , Laodelphax striatellus ), causes serious loss in rice production. Breeding resistant cultivars are one of the most effective strategies to control the virus disease and its vector. By both natural inoculations in the field and modified seedling‐box screening test in the glasshouse, an indica variety WR 24 showed high resistance to RBSDVD and SBPH . An F 2:3 population consisting of 153 lines derived from a cross between WR 24 and a susceptible japonica variety Suyunuo was used for quantitative trait loci ( QTL ) analysis of RBSDVD and SBPH resistance. The linkage map consisting of 130 SSR markers was constructed with an average marker interval of 13.90 cM , spanning a total of 1890.9 cM . Totally, five QTL s for RBSDV resistance, viz. qRBSDV 3 WR 24 , qRBSDV 6 WR 24 , qRBSDV 7 WR 24 , qRBSDV 9 WR 24 and qRBSDV 11 WR 24 , were detected on chromosomes 3, 6, 7, 9 and 11, with LOD scores of 2.7, 3.08, 3.13, 5.28 and 3.7, respectively. Meanwhile, three QTL s for SBPH resistance, including qSBPH 5 WR 24 , qSBPH 7 WR 24 and qSBPH 10 WR 24 , were mapped on chromosomes 5, 7 and 10, with LOD scores of 2.18, 3.5 and 3.57, respectively. All resistant alleles were from WR 24. Among these QTL s, qRBSDV 7 WR 24 , qSBPH 5 WR 24 and qSBPH 10 WR 24 were newly reported, and qSBPH 10 WR 24 showed major effect that explained 17.9% of total phenotypic variance. The RBSDVD and SBPH resistance QTL s and the tightly linked DNA markers can be utilized in RBSDV and SBPH resistance breeding in rice.
Type of Medium:
Online Resource
ISSN:
0179-9541
,
1439-0523
DOI:
10.1111/pbr.2018.137.issue-5
Language:
English
Publisher:
Wiley
Publication Date:
2018
detail.hit.zdb_id:
2020488-7
SSG:
12
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