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
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Creator |
DHARSHINI, G M
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Contributor |
SIDDE GOWDA, D K
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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. |
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Date |
2016-12-05T14:07:13Z
2016-12-05T14:07:13Z 2012-07-25 |
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Type |
Thesis
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Identifier |
Th-10231
http://krishikosh.egranth.ac.in/handle/1/89188 |
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Language |
en
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Format |
application/pdf
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Publisher |
University of Agricultural Sciences GKVK, Bangalore
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