Characterization of sorghum genotypes for yield and other agronomic traits through genetic variability and diversity analysis

  • K. Seetharam and K. Ganesamurthy
Keywords: Sorghum, REML, variability, Shannon-Weaver diversity index, PCA.

Abstract

Studies on the genetic variability and diversity analysis were carried out with 39 sorghum genotypes for nine quantitative
characters. The Shannon-Weaver diversity index (H'), a measure of dissimilarity was found to be highest for number of
leaves per plant, plant height and leaf width and these characters had high heritability coupled with high genetic advance.
Of the 36 correlations, 24 were significant at P=0.05 and 21 were significant at 0.01 and 14 were found to be of useful
correlations (r>±0.500). Among the useful correlations, yield had significant correlation with days to 50% flowering, leaf
length, leaf width and panicle weight. In path analysis, panicle weight had positive direct effect on single plant yield. First
three principal components explained more than 70% of variation which reduced nine characters into seven characters and
confirmed the correlation analysis. The highest diversity index (0.879) was observed between TNS598 and IS5030.
Hierarchical clustering divided the genotypes into six clusters. Promising genotypes were identified for early flowering,
plant height, number of leaves, leaf length and yield based on cluster mean values.
Published
31-03-2013
How to Cite
K. Seetharam and K. Ganesamurthy
Characterization of sorghum genotypes for yield and other agronomic traits through genetic variability and diversity analysis. 2013. Electronic Journal of Plant Breeding, 4 1, 1073-1079. Retrieved from https://ejplantbreeding.org/index.php/EJPB/article/view/406
Issue
Vol 4 No 1 (2013)
Section
Research Note

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.