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

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Title Statement Physico-chemical basis of insect-resistance of traditional rice varieties against <em>Sitophilus oryzae </em>(L.)
 
Added Entry - Uncontrolled Name Kalita, Surajit ; Directorate of Research (Agri), College of Agriculture, Assam Agricultural University, Jorhat 785 013, Assam, India
 
Uncontrolled Index Term Chemical, Correlation, Infestation, Physical, Resistance, Rice, Sitophilus oryzae
 
Summary, etc. <p>Based on popularity and specialty, seven traditional rice varieties were tested for resistance reactions in terms of physico-chemical properties against rice weevil, <em>Sitophilus oryzae</em> and compared with the improved high yielding rice varieties during 2019-2021. The result revealed that the aromatic rice variety <em>Kon joha</em> was the least suffered (11.67%) under the husked condition, whereas the aromatic traditional rice variety <em>Bokul joha</em> was the least suffered (53.00%) under the de-husked conditions at 18 days after infestation. Amongst the traditional varieties, the <em>Black rice</em> 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 <em>S. oryzae</em>.</p>
 
Publication, Distribution, Etc. Indian Journal of Traditional Knowledge (IJTK)
2024-07-24 14:13:45
 
Electronic Location and Access application/pdf
http://op.niscair.res.in/index.php/IJTK/article/view/72573
 
Data Source Entry Indian Journal of Traditional Knowledge (IJTK); ##issue.vol## 23, ##issue.no## 7 (2024): Indian Journal of Traditional Knowledge
 
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