Generation mean analysis for quantitative traits in basil (Ocimum basilicum L.)
Keywords: Ocimum basilicum L., quantitative trait, joint scaling test, gene effects, generation mean analysis
AbstractTo study the nature and magnitude of gene effects for yield and its components in basil (Ocimumbasilicum L.), generation mean analysis with following seven crosses of different accession was carried out: EC-388788/IC-333322, EC-387893/IC-326711, EC-388896/IC-369247, EC-388887/IC-386833, EC-387837/EC-338785, IC-369247/IC-370846 and IC-344681/IC-326735.Generation mean analysis with three parameter model with χ2 test indicated that additive-dominance model was inadequate for all the traits in all the crosses used to estimate the gene effects.The analysis showed the presence of additive, dominance and epistasis gene interactions.In addition to digenic and higher order of interaction, additive and dominance effects were also important for improvement in contributing traits to yield. Duplicate type epistasis played greater role than complimentary epistasis. This suggested that duplicated type of gene action was present confirming the importance of dominance effects. The study revealed the importance of both additive and non-dominance types of gene action for all the traits studied. Thus, considerable non-additive genetic effects observed in this study suggest that selection in advanced generation may be more appropriate.
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.