Evaluation of attributes association and path coefficients for ear yield in maize hybrids (Zea mays L.)
Journal Title: International Journal of Farming and Allied Sciences - Year 2013, Vol 2, Issue 22
Abstract
Maize crop plays an important role in the world economy and is valuable ingredient in manufactured items that affect a large proportion of the world population. Considering the diversity of maize varieties in identifying and introducing one or more varieties for the area using a short and reliable method could be a lot of things the way decoding. One of the important goal in corn breeding is improvement of seed yield. Because of that, genetic variability assessment and determination of the best selection criteria were conducted by using 15 dent corn hybrids in the randomized complete block design with four replications. Analysis of variance showed the significant difference among corn hybrids for all the traits except seed depth, humidity percentage, days from anthesis and days from silking until physiological maturity. Mean comparison between them revealed hybrid 5 has high seed and protein yield and days to physiological maturity. Therefore, hybrid 5 has proper genetic potential to introduce as promising variety to sow in normal condition. On the other hand, hybrid 14 recommend for stress prone environments. Phenotypic correlation, step-wise regression and path analysis demonstrated on efficacy of selection for high quantity of protein yield in order to improve ear yield. In conclusion, results showed possibility of ear yield improvement by using protein yield and ear weight as selection criteria. Amongst, traits such as no.grain/row and grain weight along with ear weight, plant and ear height had positive effects on ear yield increasing.
Authors and Affiliations
Nastaran Rashidi, Ahmad Reza Golparvar, Mohammad Reza Naderi, Homayoon Darkhal
Keywords
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