IJAIR NAAS Score : 3.99 ,ISSN : 2319-1473
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Estimation of Genetic Parameters, Correlation and Path Coefficient Analysis of Different Genotypes of Maize (Zea Mays L.)
- R. Kharel; S. K. Ghimire; B. R. Ojha; K. B. Koirala
- A field research was conducted to evaluate the maize genotypes for their genetic parameters, association among yield parameters and correlation and causation in alpha-lattice design with three replications at National Maize Research Program (NMRP) Rampur, Chitwan in 2012. Genotypic coefficient of variation was estimated high for number of kernels row-1 (24.3%) and ear height, moderate for plant height, 100-kernel weight, days to 50% silking, ear length, SPAD chlorophyll and leaf angle. Genetic advance as percentage of mean had high value for number of kernels row-1 (43.73%), ear height, plant height, days to 50% silking, SPAD chlorophyll and 100-kernel weight and moderate value for ear length, leaf angle, days to 50% tasseling and ear girth. High heritability was estimated for days to 50% tasseling (0.89), plant height, SPAD chlorophyll, days to 50% silking, number of kernels row-1, leaf angle and ear length while, ear girt (0.56) while, 100-kernel weight, leaf number and number of kernel rows ear-1 showed moderate heritability. Number of kernels row-1 (0.94) had positive and highly significant correlation with grain yield plant-1 followed by ear length, 100-kernel weight, ear girth, SPAD chlorophyll, plant height and ear height while negative correlation was found for leaf angle, days to 50% silking and days to 50% tasseling. Number of kernels row-1, ear length, 100-kernel weight and ear girth also had highly significant positive inter se association with all yield parameters except days to 50% tasseling, days to 50% silking and leaf angle. Path coefficient analysis showed that number of kernel row-1 (0.592) showed the highest, positive and high direct contribution on grain yield plant-1 followed by ear length, ear girth, 100-kernel weight and ear height while, Plant height and days to 50% tasseling showed negative, moderate and low direct effect on grain yield plant-1 respectively. Thus, selection for genotypes with more number of kernels row-1, maximum ear length and ear girth and having more kernel weight is fruitful for improvement in grain yield plant-1
- Select Volume / Issue:
- Year:
- 2017
- Type of Publication:
- Article
- Keywords:
- Maize; Heritability; Correlation; Path Analysis; Direct Effects; Grain Yield Plant-1
- Journal:
- IJAIR
- Volume:
- 6
- Number:
- 1
- Pages:
- 191-195
- Month:
- July
- ISSN:
- 2319-1473
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