Utilizing selection indices to enhance genetic gain in turmeric (Curcuma longa L.)
Turmeric, known as "The golden spice" in India, is prized for its curcumin pigment, offering various uses as a food preservative, spice, and coloring agent. Its medicinal potential is gaining global recognition. A total of 24 turmeric genotypes were evaluated at Medicinal and Aromatic Plants Research Station, Anand Agricultural University, Anand, Gujarat. Significant genetic diversity among the genotypes was revealed through multivariate analysis of variance (MANOVA). Discriminant function analysis and selection indices were employed to improve grain yield and other important traits in turmeric. The results showed that selecting multiple traits simultaneously through a selection index yields higher genetic gain compared to selecting single traits. The comparison of selection efficiency for different trait combinations demonstrated an increase in selection efficiency with an increasing number of traits. The highest selection efficiency was observed when all six attributes were considered. The study identified the most effective four trait combination, comprising curing percentage, leaf oil percentage, rhizome oil percentage and fresh rhizome yield per plant, for enhancing grain yield in turmeric. The best-performing genotype, ATG-17, showed promise for future breeding activities.
Keywords: Curcuma longa L., Discriminant factor analysis, Multivariate analysis of variance, Selection indices.
Utilizing selection indices to enhance genetic gain in turmeric Curcuma longa L.. 2023. Electronic Journal of Plant Breeding, 14 3, 1215-1221. Retrieved from https://ejplantbreeding.org/index.php/EJPB/article/view/4872
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.