Variability and path analysis studies in F2 population of sorghum (Sorghum bicolor (L.) Moench)
Abstract
A field experiment was conducted to evaluate Sorghum (Sorghum bicolor (L.) Moench) F2 population of COS 28 x SPV 2308 and COS 28 x SPV 2307. These crosses were raised during Kharif’2018. Variability and path analysis was carried out for ten morphological traits viz., plant height, days to flowering, the number of leaves, flag leaf length, flag leaf width, panicle length, panicle weight, the number of primaries, 100 seed weight and grain yield per plant. The mean value was found to be higher in COS 28 x SPV 2307 for the traits namely plant height and the number of leaves per plant. The mean value was found to be higher in the cross COS 28 x SPV 2308 for the traits viz., flag leaf length, flag leaf width, panicle length, panicle weight, the number of primaries, 100 seed weight and grain yield per plant. Variability studies revealed that the high PCV was observed in both the crosses for all the traits thus showing high environmental influence except days to flowering and the number of leaves. High GCV, heritability and Genetic advance as percentage of mean was found to be high for the traits namely flag leaf length and flag leaf width in COS 28 x SPV 2308 and for the traits panicle length and the number of primaries in COS 28 x SPV 2307. The traits exhibit high GCV, heritability and GAM are additive in nature which could be used as the selection criteria for increasing the yield potential. Path analysis revealed that both the crosses showed high direct effect for grain yield per plant through the traits viz., flag leaf length, panicle length, panicle weight, the number of primaries and 100 grain weight. Flag leaf length, panicle length and the number of primaries exhibited high indirect effect through the trait panicle weight in both the crosses.
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.
