Euphytica (2017) 213 (2 - 35)

Ram Deen, K. Ramesh, G. Padmavathi, B.C. Viraktamath and T. Ram (2017)
Mapping of brown planthopper, Nilaparvata lugens (Stål), resistance gene (bph5) in rice (Oryza sativa L.)
Euphytica 213 (2 - 35)
Abstract: Brown planthopper (BPH) has emerged as one of the most devastating pests of rice in several Asian countries. Cultivation of planthopper resistant varieties is an ecologically acceptable strategy. A population of 255 F_2:3 families from the cross Taichung Native 1/ARC10550 was used to map BPH resistance with 106 polymorphic simple sequence repeat markers. The inheritance pattern of different traits suggested that the resistance in ARC10550 is controlled by quantitative traits instead of a single recessive gene. The quantitative trait loci (QTLs) for BPH resistance were analysed for nine phenotypic traits. Several of these phenotypic traits recorded high degree of positive or negative correlations between them, suggesting dependence or redundancy of the tests. QTL analysis revealed that five major loci were associated with resistance, one for damage score (qBphDs6) on chromosome 6, two for nymphal preference at 48 and 72 h (qBphNp(48h)-1 and qBphNp(72h)-12) on chromosome 1 and 12 and two for days to wilt (qBphDw(30)-3 and qBphDw(30)-8) on chromosome 3 and 8 explaining the phenotypic variance of 24.23, 8.69, 7.66, 4.55 and 10.48% respectively. These QTLs indicated the negative additive effects suggesting that the resistant alleles identified were from ARC10550 donor parent. These QTLs jointly explained 55.6% of the phenotypic variance for BPH resistance in this population.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website

Research topic(s) for pests/diseases/weeds:
resistance/tolerance/defence of host

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Nilaparvata lugens	Rice (Oryza)