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 |
Maize (Zea mays L.) is the third most important cereal in India after rice and wheat. It is grown in 178 million hectares globally in about 160 countries and contributes to 50% of global grain production (1,170 million MT). Area under maize is consistently, showing increasing trend as there is high demand for maize as it is used as input for large number of products. This demand needs to be met out from shrinking land resources and other production constraints. Yield is a complex inherited character and therefore, direct selection for yield per se may not be the most efficient method for its improvement. Indirect selection for other yield related characters with high correlation will be more effective. Correlation studies between yield and yield components are pre-requisite to plan a meaningful breeding programme to develop high yielding inbreds and hybrids. With this background, investigation was conducted to study the coefficient of correlation among 290 maize inbred lines. 290 inbred lines were raised in augmented design with 10 blocks including three checks in each block. Seeds were sown in a row length of 3m with 0.6m distance between rows and 0.3m distance between plants. Analysis of variance revealed significant difference between the inbred lines indicating the presence of diversity among inbred lines. Grain yield plant-1, being the most important trait was found positively and highly correlated with kernels row-1 (0.816), cob diameter (0.813), cob length (0.811) and 100 seed weight (0.706). These traits exhibiting highly significant correlation suggests that, selection for these traits in a breeding program will help in enhancing the grain yield plant-1per se.
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