Genetics of ear traits and grain yield in quality protein maize (Zea mays L.)
Keywords:
Maize, Component analysis, gene action, diallel, QPM, heritability.
Abstract
Hayman’s component analysis was employed to ascertain the gene actions conditioning the ear related traits viz., ear length, ear diameter, kernel rows per ear, kernels per row and grain yield per plant in quality protein maize. Eight yellow seeded quality protein maize (QPM) inbred lines were crossed in diallel mating design, including reciprocals. The inbreds and their 56 crosses were evaluated in randomized block design with 3 replications across the three environments. Significant differences among genotypes observed for all the traits over the environments. Influence of epistasis found for all the traits in one or more seasons except ear length. Ear length exhibited importance of additive gene effects across the seasons. Over-dominance showed in all the characters. The range of narrow sense heritability was low over the environments for most of the traits i.e. for ear length (15.1-19.3%), ear diameter (12.1-17.7%), kernels per row (23.6-30.5%) and grain yield per plant (13.6-19.5%) whereas kernel rows per ear exhibited moderate narrow sense heritability ranging from 44.3-66.5% over the environments. In general, narrow sense heritability estimates were higher in rabi environment as compared to kharif environment
Published
05-11-2014
How to Cite
V.K. Agrawal*, R.M. Singh, J.P. Shahi and R.K. Agrawal
Genetics of ear traits and grain yield in quality protein maize Zea mays L.. 2014. Electronic Journal of Plant Breeding, 5 3, 428-434. Retrieved from https://ejplantbreeding.org/index.php/EJPB/article/view/34
Issue
Section
Research Article
It is certified that:
- The corresponding author is fully responsible for any disputes arising due to the publication of his/her manuscript.
- The article has been seen by all the authors who are satisfied with its form and content.
- The sequence of names of authors in the by-line is as per their relative contribution to this experiment, giving due credit to all scientists who made notable contribution to it.
- All the authors fully understand that inclusion of any other co-authors or exclusion of any co-authors is not possible once the article has been submitted to the journal.
- The corresponding author takes full responsibility for this article.
- The address of the organization where the research was conducted is given.
- The article is exclusive for this journal, and the results reported here have not been sent (and will not be sent during its consideration by this journal) for publication in any other journal.
- Authors agree to abide by the objective comments of referees and do agree to modify the article into a short note as per the recommendation, for publication in the Electronic Journal of Plant Breeding.
- If published in Electronic Journal of Plant Breeding, the copyright of this article would vest with the Indian Society of Plant Breeders, who will have the right to enter into any agreement with any organization in India or abroad engaged in reprography, photocopying, storage and dissemination of information contained in it, and neither we nor our legal heirs will have any claims on royalty.
