Genetic architecture of morpho-physiological traits over environments in pearl millet [Pennisetum glaucum (L.) R. Br.]
Genetic studies in pearl millet at varied environments
Thirty pearl millet accessions including inbreds and hybrids procured from ICRISAT, Hyderabad were evaluated during summer 2017 over three sowing dates. The wide range of phenotypic variation was noted in an individual and pooled environment for all fourteen qualitative and quantitative traits. Higher estimates of phenotypic coefficient of variation was observed over the genotypic coefficient of variation for the number of effective tillers per plant, grain yield per plant, number of total tillers per plant, harvest index, leaf area, test weight and seed setting on main tiller. The high GCV (%) and PCV (%) were obtained for most of the traits. High heritability was associated with high genetic advance (% mean) for plant height, dry fodder yield, earhead girth and length, leaf area, grain yield, test weight, harvest index and number of total tillers per plant suggesting additive gene action for inheritance and could be improved through selection. The trait grain yield was positively and highly significantly correlated with earhead girth, seed setting on main tiller, plant height, leaf area, dry fodder yield, test weight, number of total tillers per plant, number of effective tillers per plant and harvest index at genotypic, phenotypic and environmental levels. The path coefficient analysis concluded that the desirable ideotype for improving grain yield should possess maximum earhead girth, more number of effective tillers with moderate plant height and flowering time.
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.