Exploitation of hybrid vigour in sesame (Sesamum indicum L.)
Keywords: Sesame, heterosis, gene action
AbstractNature and magnitude of gene action and extent of heterosis were studied in a set of 21 hybrids and their parents developed by diallel mating design without reciprocals in sesame. The parent G.Til-3 was found to be the best general combiner for seed yield per plant, number of capsules per plant, number of seeds per capsule and number of branches per plant, whereas KMR-74 was good combiner for number of branches per plant and seed yield per plant. The crosses, KMR-74 x Patan-64, KMR-24 x G.Til- 3, KMR-74 x KMR-77 and G.Til-3 x G.Til-10 exhibited high sca effect and showed highly significant positive standard heterosis for seed yield per plant. The SCA variance was more than GCA variance for the traits capsule length, number of seeds per capsule and seed yield per plant indicating the role of non-additive gene action for the inheritance of these traits. Hence, it is suggested that yield can be improved by exploitation of hybrid vigour through heterosis breeding.
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.