Genetic variability studies for yield and yield components in sunflower (Helianthus annuus L.)
AbstractGenetic variability is a crucial tool for improvement of seed yield in sunflower. The analysis of variance of 23 hybrids revealed significant differences for all nine characters studied. The genotypic and phenotypic variation was high for seed yield per plant, head diameter and test weight indicating these characters were amenable for improvement by selection. All characters studied were least affected by environment as shown by correspondence between phenotypic co-variance (PCV) and genotypic co-variance (GCV). High heritability coupled with the high genetic advance was recorded for plant height, test weight, seed yield per plant, volume weight and head diameter. High heritability along with moderate genetic advance was observed for days to 50 per cent flowering and oil content indicating additive gene action controlling these traits.
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.