Genetic variability and correlation studies of yield and phytic acid in F2 populations of maize (Zea mays L.)
A genetic study in the F2 populations of three crosses viz, UMI1200 x UMI1099, UMI1201 x UMI1099 and UMI1210 x UMI1099 was carried out in Kharif 2017. The genetic parameters studied include genotypic and phenotypic coefficient of variances, heritability, genetic advance as percent of mean and correlation coefficient. Performance of the individual genotypes of all the three F2 populations for 17 traits including seed yield and phytic acid revealed the presence of significant difference among genotypes, indicating the presence of genetic variability. Marginal difference between genotypic coefficient of variation (GCV) and phenotypic coefficient of variation (PCV) indicated that variability was due to genetic factors for most of the traits studied. Traits that exhibited high heritability along with high genetic advance as percentage of mean (GAM) which can be used for selection were identified. Association studies depicted that plant height, cob placement height, cob length, cob breadth, number of rows per cob, number of kernels per row, cob weight, hundred kernel weight and shelling percentage exhibited positive correlation with yield. Correlation between yield and phytic acid content was found to be non-significant in the current study which revealed that selection can be progressed in both directions independently and its possible to obtain inbreds with low phytic acid content and high yield in the later generations through effective breeding and selection strategies.
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.