International Journal of Pure & Applied Bioscience (IJPAB)
Year : 2017, Volume : 5, Issue : 4
First page : (1011) Last page : (1021)
Article doi: http://dx.doi.org/10.18782/2320-7051.5164

Study on Morphological and Biochemical Features Associated With Maize (Zea mays L.) Resistance Against C. partellus

Lokesh* and J.C. Mehla
Entomology Department, CCS Haryana Agricultural University, Hisar-125001, India
*Corresponding Author E-mail: lok.hau@gmail.com
Received: 7.07.2017  |  Revised: 16.07.2017   |  Accepted: 17.07.2017  

 ABSTRACT

Four maize genotypes comprising two resistant (551-5 and 335) and two susceptible :295 and 1015 (2+3),were selected for studying mechanisms and bases of resistance. Under both choice and no choice conditions the observed lesser oviposition on resistant genotypes,  in comparison to susceptible ones, indicated ovipositional antixenosis. Prolonged larval period, reduced larval and pupal survival, reduction in length and weight of larvae and pupae, lower growth index, adult longevity, fecundity and increase in total life span of maize stem borer constituted antibiosis effect of resistant genotypes. Nitrogen (r = -0.87), protein (r = -0.87), total sugars (r = -0.91) and phosphorus (r = -0.91) were negatively and significantly correlated with the total life span of maize stem borer. However, potassium (r = 0.92) and total phenols (r = 0.92) had positive and significant impact. Influence of nitrogen (r = 0.87), protein (r = 0.87), total sugars (r = 0.91), reducing sugars (r = 0.89) and phosphorus (r = -0.91) on per cent larvae completing life cycle was positive and significant. Potassium (r = -0.92) and total phenols (r = -0.92) exhibited negative and significant correlation with the per cent larvae completing life cycle. Avoidable grain yield losses to the tune of 22.27 and 42.41 per cent were observed due to maize stem borer in recommended hybrid HM-4 under unsprayed natural infestation and unsprayed artificially inoculated conditions, respectively. The application of recommended insecticide endosulfan resulted in 28.65 and 73.63 per cent increase in grain yield under sprayed natural infestation and sprayed artificially inoculated conditions, respectively.

Key words: Antixenosis, Antibiosis, Chilo partellus, Morphological, Biochemical, Mechanism, Resistance

Full Text : PDF; Journal doi : http://dx.doi.org/10.18782

Cite this article: Lokesh and Mehla, J.C., Study on Morphological and Biochemical Features Associated With Maize  (Zea mays L.) Resistance Against C. partellus, Int. J. Pure App. Biosci.5(4): 1011-1021 (2017). doi: http://dx.doi.org/10.18782/2320-7051.5164