Genetic correlation among various quantitative characters in maize (Zea mays L.) hybrids
2005
Malik, H.N. (National Agricultural Research Centre, Islamabad (Pakistan). Maize, Sorghum and Millet Programme) | Malik, S.I. (University of Arid Agriculture, Rawalpindi (Pakistan)) | Hussain, M. | Chughtai, S.R. | Javed, H.I.
Thirty six maize (Zea mays L.) hybrids along with their parental lines were grown in a randomized complete block design with two replications to assess the genetic correlation among 16 quantitative traits. A positive genetic correlation with grain yield was recorded for plant and ear heights, leaves plant-1, leaf length, width and area, ear weight and kernels row-1. Days to silking and tasselling, and grain moisture at harvest were negatively and correlated with grain yield, while ears plant-1, grain moisture at harvest, kernel rows ear-1 and 100-kernel weight exhibited positive but no genetic correlation existed with grain yield. Kernels row-1 was marked as the most contributing character towards high grain yield (rA = 0.76) followed by leaf area (rA = 0.69), plant height (rA = 0.67) and leaves plant-1 (rA = 0.43). A strong positive genetic correlation was observed among plant height, leaf area, leaves plant-1, ear weight, kernels row-1, and grain yield indicating that selection for these characters can help improve maize grain yield.
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