Estimation of heterosis and dominance deviation for seed cotton yield, its components characters in upland cotton
Keywords: Cotton, Dominance estimates, Heterosis and Line x Tester analysis
AbstractA line x tester analysis was undertaken to estimates the magnitude of heterosis and dominance deviation in Gossypium
hirsutum L. for yield, its components and other matricate characters in 60 test entries including (44 F1s along with 15 parents
and 1 standard check hybrid). Analysis of variance indicated the significant difference among the parents and hybrids for all
12 characters studied which revealed existence of variability among the genotypes. Studies revealed that out of 44 cross
combinations, only 3 hybrids viz., BC-68-2 x MCU 11, BC-68-2 x AC 738 and BN 1 x Reba-B-50 depicted significant
and positive heterosis over standard check hybrid G. Cot. Hy. 12. The hybrid BC-68-2 x MCU 11 exhibited significant
positive standard heterosis for seed cotton yield per plant and other attributing characters i.e. total number of bolls per plant,
average boll weight, lint yield per plant and lint index. The mean values of potence ratio in all twelve characters suggested
that degree of dominance was governed by over dominance genes for the expression of all the characters under study.
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.