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Seminar: PBGB

Wednesday, July 22, 2015, 02:00pm - 03:00pm


Identification and molecular analysis of a novel resistance gene for brown planthopper biotype of India

Prahalada, G.D.
PhD Research Scholar/GRiSS Scholar

1400-1500H, Wednesday, 22 July 2015
Umali Room A


The brown planthopper (BPH) Nilaparvata lugens (Stal.) is one of the most destructive monophagous insect pest of rice. Host-plant resistance has proven to be one of the most efficient strategies to manage the BPH. CR 2711-76 is a BPH resistant indica variety developed at Central Rice Research Institute (CRRI), India. Bioassay studies from 2011 to 2014 at India, and International Rie Research Institute (IRRI) showed that, CR 2711-76 is a stable (durable) and broad spectrum resistant cultivar. A dominant gene present in CR 2711-76, conferring BPH resistance was located on the long arm of the chromosome 3 and physically mapped in the interval of 475kb between the markers PA26 and RM2334 and was named as BPH31. The BPH31 in CR 2711-76 has all three kinds of of resistance mechanism such as antibiosis, antixenosis and tolerance. The BPH31 gene was introgressed into the indica variety Jaya through Marker Assisted Selection (MAS). In this seminar, I will be presenting the primary mapping, fine mapping, BPH31 and the MAS to develop improved version of Indian elite cultivar.


Rm A, Umali Bldg