Heterosis studies in interspecific cotton hybrids (Gossypium hirsutum L. x Gossypium barbadense L.) under irrigated condition
The present study was undertaken to assess the extent of heterosis for seed cotton yield and its attributing traits in 24 interspecific hybrids of cotton developed by crossing 8 lines with 3 testers in line × tester mating design during kharif, 2017-18 at Agricultural Research Station Dharwad Farm. Significant heterosis was observed for the characters under study indicating the presence of genetic diversity among the parental lines. Except for number of sympodia per plant and boll weight, the mean sum of squares of parents vs crosses was significant for all the characters indicating presence of heterosis for these traits. None of the crosses was superior for all the traits studied. However, the cross CPD-462 x SBYF-425 was the best as it had the highest mean performance for economically important characters. Majority of the crosses exhibited significantly positive mid parent, better parent heterosis for all important yield contributing characters except ginning outturn. Most of the hybrids expressed significant standard heterosis for all the characters except boll weight and ginning outturn over the checks.
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.