International Journal of Plant Protection

M. N. Chavan ¹, M. G. Sable

Affiliations
1 Department of Entomology, Indira Gandhi Krishi Vishwavidyalaya, Raipur C.G., IN

Abstract

The development of resistant varieties requires to in depth studies on interaction between insect pests and genetics of plant mapping Quantitative Ttait Loci (QTL) for BPH resistance therefore, study was conducted for fifty recombinant inbred lines (RILs) of Danteshwari/Dagad Deshi. These lines were first screened in glasshouse condition against BPH insect by using standard seed box technique. The genotyping of BPH resistant and susceptible plant was carried out by using 49 SSR primers but, only ten SSR markers showed parental polymorphism and also the result showed that the segregation pattern of marker deviated from the normal Mendelian 1:1 ratio and exhibited distorted segregation pattern. However, no clear cut linkage/ association was noticed between markers and phenotypes.

Keywords

Rice, Mapping of QTL, Brown Planthopper, nilaparvata

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M. G. Sable ¹, D. K. Rana ¹

Affiliations
1 Department of Entomology, Indira Gandhi Krishi Vishwavidyalaya, Krishak Nagar, RAIPUR (C.G.), IN

Abstract

Six differential varieties along with standard checks were evaluated for donor validation against rice brown plant hopper at glasshouse, Department of Entomology, IGKV, Raipur during 2013- 14. All the differentials were resistant to Raipur BPH population. Among the differential tested, ARC 10550 exhibited list plant damage score (0.64) followed by Sinna Sivappu (0.75). Honeydew excretion values were minimum in Sinna Sivappu (15.3 mm²) followed by Rathu Heenati (15.8 mm²). The average probing marks were maximum in Sinna Sivappu (38.3) followed by Rathu Heenati (30.7) which were significantly higher than TN1, while nymphal survival value was minimum in variety INRC 3021 (29.21%). All the differentials showed resistant reaction in all the tests performed against Raipur population. These differentials were designated as the potential donors for BPH resistance.

Keywords

Resistant Donor, BPH, Rice, Nilaparvata lugen.

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