Indian Society of Genetics & Plant Breeding

Genetic analysis of resistance to green leafhopper, Nephotettix virescens (Distant) in rice (Oryza sativa L.)

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The genetics of resistance to green leafhopper Nephotettix
(Distant) in five rice (Oryza sativa L.) donors
including two pre-release varieties with unknown genes
for resistance
viz., lET 13341 and lET 12175; three
differentials with known genes
viz., TAPL 796, Maddai
Karuppan and Ptb 8 was studied. The donors, F
1 hybrids
and F
2 populations from the crosses of donors with the
susceptible variety, TN1 and inter crosses among resistant
donors were screened against Indian population of green
leafhopper in green house. Inheritance of resistance
suggested that a single dominant gene governed resistance
in lET 13341, lET 12175, TAPL 796 and Maddai Karuppan
and a single recessive gene in Ptb 8. Allelic tests with
known gene donors Le., TAPL 796 and Maddai Karuppan
showed that the dominant genes present in lET 13341
and lET 12175 were different and independent of
Glh 6
and Glh 7 of TAPL 796 and Maddai Karuppan, respectively  

Keywords: Rice, green leafhopper, resistance, inheritance, allelic tests


Year: 2006
Volume: 66
Issue: 3
Article DOI: NA
Print ISSN: 0019-5200
Online ISSN: 0975-6906



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