Vol. 7, Special Issue 6 (2019)
Field screening of maize hybrids (Zea mays L.) against the maize stem borer and aphid
Author(s): Satish Chandra Narayan, Milan Kumar Chakravarty, Manigopa Chakraborty, Binay Kumar, Varsha Rani, Soumitra Sankar Das and Ravindra Kumar
Abstract: Maize is a versatile, miracle crop and thus termed as ‟Queen of Cereals” (Hanegave et al., 2011). It is a crop with wide adaptability which occupies important place as food (25%), animal feed (12%) poultry feed (49%), industrial products mainly starch (12%) and one per cent each in brewery and seed (Dass et al., 2008). It belongs to tribe Maydeae of the family Poaceae. Like other crops, it also faces several abiotic and biotic stresses. Biotic stresses may include insect’s pests, parasites and pathogens, which are known since ancient times. It is attacked by the 140 different species of insect pest which reduce the yield; out of these 10 species cause the major damage (Arabjafari and Jalali, 2007). Foliar damage occurs when the whorl stage plants are attacked. This type of damage is expressed characteristically as lesions, formed by the scraping the epidermis and parenchyma on one side of the leaf, often leaving the other epidermis intact and transparent. In maize, heavy infestation by aphid caused leaves to turn yellow or red following the feeding and may shrivel and die, particularly if the weather is dry. This experiment was carried out in order to identify the reaction of developed maize hybrids to maize stem borer and aphid under field conditions in randomized block design with three replications. Scoring of aphid infested leaves were based on 0-5 scale, but for stem borer scale was 0-9 rating. After leaf scoring PDI was arcsin transformed and analysis was done.
Pages: 921-923 | 753 Views 170 Downloads
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How to cite this article:
Satish Chandra Narayan, Milan Kumar Chakravarty, Manigopa Chakraborty, Binay Kumar, Varsha Rani, Soumitra Sankar Das and Ravindra Kumar. Field screening of maize hybrids (Zea mays L.) against the maize stem borer and aphid. International Journal of Chemical Studies. 2019; 7(6): 921-923.
