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Trends in Biosciences
Year : 2010, Volume : 3, Issue : 2
First page : ( 184) Last page : ( 186)
Print ISSN : 0974-8431. Online ISSN : 0976-2485.

Comparative Biology of Sorghum Stem Borer, Chilo partellus (Swinhoe) (Lepidoptera: Pyralidae) on Different Sorghum Genotypes/Cultivars

Chavan N.P.1, Rote N.B.2, Patel M.B.1, Shinde S.V.*

1Department of Agricultural Entomology, N.M. College of Agriculture, Navsari Agricultural University, Navsari, 396450, (Gujarat)

2Main Sorghum Research Station, Navsari Agricultural University, Surat, 395 007, Gujarat

*e-mail: santnath@indiatimes.com

Online published on 14 March, 2012.

Received:  9  October,  2010; Accepted:  19  November,  2010.

Abstract

Laboratory experiment was conducted to study the comparative biology of C. partellus on 10 different genotypes/cultivars of sorghum at Department of Agricultural Entomology, N. M. College of Agriculture, Navsari Agricultural University, Navsari, Gujarat during the September-November 2003 under laboratory conditions. The sorghum genotypes were sown at Sorghum Research Station, Navsari Agricultural University, Navsari which were used during comparative biology study of C. partellus. In comparative biology study, the larval length and weight as well pupal length and weight were recorded maximum on susceptible genotypes (DJ 6514 and GJ 40) and minimum on resistant genotypes(IS 18551 and IS 2205), while the larval and pupal period was recorded as minimum on susceptible genotype (DJ 6514 and GJ 40) and it was prolonged on resistant genotypes(IS 18551 and IS 2205). The highest larval mortality was recorded in resistant genotype IS 18551 (55.55%), while other genotypes IS 2205, CSV 15, SR 770, SR 2458 and GJ 40 which showed resistant reaction against C. partellus recorded the larval mortality ranging from 44 to 49 per cent and lowest larval mortality was observed in susceptible genotype DJ 6514 (27.77%). Among the various genotypes the minimum female longevity was observed when the larvae reared on IS 18551 (3.54 days), IS 2205 (4.00 days) and SR 2458 (4.00 days). However the female longevity was maxim when the larvae were reared on DJ 6514 (5.20 days).

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Keywords

Comparative biology, sorghum genotypes, Chilo partellus.

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