Genetic variability, heritability and genetic advance studies in backcross populations of maize (Zea mays L.)
Genetic variability, heritability and genetic advance of a character assist in setting up the breeding programmes for the improvement of the particular trait. In the current study high estimates of PCV and GCV were recorded for cob weight and single plant yield among the cross derivatives of UMI 1200 × CE 477. The GCV estimates of single plant yield (23.28 in BC1F1, 38.10 in BC2F1 and 33.23 in BC2F2) was observed in the cross derivatives of UMI 1200 × CE 477. Higher PCV and GCV values were obtained for cob weight and single plant in the other cross UMI 1230 × CE 477 also. The GCV values for single plant yield (39.00 in BC1F1, 39.00 in BC2F1 and 37.11 in BC2F2) were found among the cross derivatives of UMI 1230 × CE 477. The PCV and GCV values suggested sufficient variability and thus offers scope for genetic improvement through selection. Both the characters cob weight and single plant yield exhibited higher heritability associated with high genetic advance and hence direct selection of such characters would be effective in improving the yield.
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.