National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
Aiming at verifying the effect of host on the development, the biology of Rhyzopertha Dominica (Fab.) was studied on paddy variety, Sumati, Maize Hybrid DHM-111 and sorghum variety M 35-1 during 2009-10 in the Department of Entomology, College of Agriculture, Rajendranagar, Hyderabad. The biological parameters assessed were egg duration, egg hatching percentage, total larval and pupal period, total development period, fecundity, male and female longevity, sex ratio, pre-oviposition, oviposition and post oviposition period. When R. Dominica was reared on paddy, maize and sorghum the egg period was lowest in paddy variety sumati (6.57) and highest in maize hybrid DHM 111 (7.72). The egg hatching percentage is lowest in Maize Hybrid, DHM-111 (68.48±3.95) and highest in case of sorghum var. M 35-1 (73.65±5.12). The total larval and pupal period shortest in sorghum var. M 35-1 (35.35±1.95) and highest in Maize Hybrid, DHM-111 (43.85±1.45). The shortest total developmental period of 42.17±2.13 and 41.63±2.17 were recorded in male and female of R. Dominica in sorghum var. M 35-1 and the longest developmental period of 51.57±1.28 and 50.77±1.14 were recoreded in males and females of R. Dominica in case of Maize Hybrid, DHM-111. In all the three hosts it was found that the longevity of female was longer than male. The shortest pre-oviposition, oviposition and post oviposition periods of 4.03±0.67, 31.33±2.41, 6.13±0.73 days were recorded in Maize Hybrid DHM- 111 respectively. The results obtained shows that among the three host grains used for the study, Maize hybrid was found to be the least preferred host, followed by paddy variety, Sumati and sorghum variety, M 35-1.
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