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Physico-chemical basis of insect-resistance of traditional rice varieties against Sitophilus oryzae (L.)

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Title Physico-chemical basis of insect-resistance of traditional rice varieties against Sitophilus oryzae (L.)
 
Creator Das, Priyanka
Kalita, Surajit
Patgiri, Pulin
Sarmah, Bhaswati
Pathak, Khanin
Saikia, Hemanta
 
Subject Chemical
Correlation
Infestation
Physical
Resistance
Rice
Sitophilus oryzae
 
Description 619-627
Based on popularity and specialty, seven traditional rice varieties were tested for resistance reactions in terms of physico-chemical properties against rice weevil, Sitophilus oryzae and compared with the improved high yielding rice varieties during 2019-2021. The result revealed that the aromatic rice variety Kon joha was the least suffered (11.67%) under the husked condition, whereas the aromatic traditional rice variety Bokul joha was the least suffered (53.00%) under the de-husked conditions at 18 days after infestation. Amongst the traditional varieties, the Black rice variety suffered maximum weight loss of 60.16% under de-husked conditions. All tested physical and biochemical parameters revealed a significant positive correlation with weight loss (r=0.87), total soluble protein (r=0.86), 1000 grain weight (r=0.74), moisture content (r=0.54), germination loss (r=0.89) and seed vigor loss (r=0.54) at 180 days of infestation under husked condition, while significant positive correlation with weight loss (r=0.91), starch content (r=0.98), crude protein content (r=0.94), L/B ratio (r=0.88), 1000 grain weight (r=0.50) and moisture content (r=0.87) at 180 days of infestation under de-husked condition. The rice grains possessing a high percentage of starch and protein, but a low per cent of crude fat was found more prone to infestation by S. oryzae.
 
Date 2024-07-23T08:32:37Z
2024-07-23T08:32:37Z
2024-07
 
Type Article
 
Identifier 0975-1068 (Online); 0972-5938 (Print)
http://nopr.niscpr.res.in/handle/123456789/64281
https://doi.org/10.56042/ijtk.v23i7.2478
 
Language en
 
Relation Int Cl.24: A01G 22/22, A01H 6/46
 
Publisher NIScPR-CSIR,India
 
Source IJTK Vol.23(7) [July 2024]