2019, VOLUME 6 ISSUE 3Pages: 497-505
Evaluation of hybrids Sorghum (Sorghum bicolor L. Moench.) for growth and yield in a rainforest agro-ecological zone
A. O. Eniola*, A. C. Odiyi, L. S. Fayeun and A. B. Obilana
*Department of Crop, Soil and Pest Management, School of Agriculture and Agricultural Technology, Federal University of Technology, PMB 704, Akure, Ondo State, Nigeria
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A field experiment was carried out during 2016 and 2017 cropping seasons at the Teaching and Research Farm of The Federal University of Technology, Akure with the aim of evaluating growth and yield performance of twenty-five hybrids sorghum. The experiment was laid out in a randomised complete block design with three replications. Data collected on seedling emergence count, number of days to 50% flowering, number of days to 95% maturity, plant height (cm), panicle length (cm), panicle diameter (cm), panicle weight (g), 1000-grain weight (g), number of seeds per panicle and grain yield (kg ha-1) were subjected to analysis of variance. The hybrids differed (p≤0.05 and p≤0.01) for all the traits except seedling emergence count. Estimates of variance component, broad-sense heritability, correlation analysis and rank summation index (RSI) were computed. High genetic advance (689.64 and 433.13) accompanied moderate heritability for number of seeds per panicle and grain yield respectively. Panicle length had positive and significant correlation with panicle weight, panicle diameter, number of seeds per panicle and grain yield (r = 0.36, 0.57, 0.27 and 0.36, respectively). Panicle weight had negative and significant correlation with 1000-grain weight (r = -0.32) but positive correlations was recorded in panicle diameter, number of seeds per panicle and grain yield (r = 0.38, 0.89 and 0.98). Nevertheless, number of seeds per panicle had positive significant correlation with grain yield (r = 0.84). RSI showed that hybrid ICSA38 × ICSV400 had the best performance with a mean rank of (4.8) and followed by ICSA38 × PIRIRA-2-1 with a mean rank of (6.6). Hence, due consideration should be given to these characters; panicle length, panicle weight and number of seeds per panicle while planning a breeding strategy for increased sorghum grain yield.