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STUDIES ON MECHANISM OF RESISTANCE TO BROWN PLANTHOPPER, Nilaparvata lugens (STAL.) IN SELECT LANDRACES OF RICE

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Title STUDIES ON MECHANISM OF RESISTANCE TO BROWN PLANTHOPPER, Nilaparvata lugens (STAL.) IN SELECT LANDRACES OF RICE
 
Creator DHARSHINI, G M
 
Contributor SIDDE GOWDA, D K
 
Description Studies were undertaken to evaluate the select landraces of rice
against BPH populations under glasshouse and field conditions,
determination of mechanism of resistance to brown planthopper and few
biochemical factors associated with BPH resistance in select landraces of
rice at Zonal Agricultural Research Station, V. C. Farm, Mandya during
2011-2012. Among 280 landraces screened, 10 landraces viz.,
Baiganmanji, Honasu 1, JBT 36/14, Kottayam, Manila, Nazarbatta, PS-
339, Ratnachoodi 1, Raibhog, and Rajamudi were found resistant to BPH
with a damage score of 1, whereas 5 landraces viz., Anilamanil, Kalakolli,
Ratnachoodi 2, Selamsanna and Moradde were found moderately resistant
to BPH with a damage score of 3. Studies on days to wilting, per cent
unhatchability of eggs, nymphal survival and adult feeding in the form of
honeydew excretion indicated that landraces such as PS 339, Kottayam,
Ratnachoodi 1, JBT 36/14, Ugibatta, Karpoorakeli, Ratnachoodi 2,
Akkalu 2 and Kalakolli showed resistance to BPH populations compared
to susceptible check TN 1. The resistant landraces had relatively higher
amount of total phenol, potassium, calcium, iron and zinc and lower
content of total soluble sugar, total reducing sugar, crude protein, total
soluble protein and nitrogen compared to susceptible check TN 1.
Based on these findings, it may be concluded that the landraces viz.,
Anilamanil, Baiganmanji, Honasu 1, JBT 36/14, Kalakolli, Kottayam,
Manila, Nazarbatta, PS 339, Ratnachoodi 1, Ratnachoodi 2, Raibhog,
Rajamudi, Selamsanna and Moradde could be added as new resistant
donors and utilized in resistance breeding programme against brown
planthopper in rice.
 
Date 2016-12-05T14:07:13Z
2016-12-05T14:07:13Z
2012-07-25
 
Type Thesis
 
Identifier Th-10231
http://krishikosh.egranth.ac.in/handle/1/89188
 
Language en
 
Format application/pdf
 
Publisher University of Agricultural Sciences GKVK, Bangalore