Paper Details

Evaluation of variability and genetic parameters in morphological traits Agropyron trichophorum using multivariate statistical analysis

Hooman Shirvani, Ali Reza Etminan, Hooshmand Safari

DOI: https://dx.doi.org/10.12692/ijb/4.2.125-132

Int. J. Biosci. 4(2), 125-132. January, 2014. (PDF)

Abstract:

The present investigation was carried out to estimate the genetic variability of morphological characters in 24 Accessions Agropyron trichophorum under irrigated condition. The results of variance analysis for seven measured traits showed significant differences among the examined characters indicating the presence of variability which can be exploited through selection. Comparison of means revealed that the genotypes 10(Semirom) and 23(Mazandaran) had the highest dry weight respectively. High heritability estimates were observed for number of shoot on bush and dry weight with indicating high genetic potential, low effect of environment and predominant role of additive gene effect on their expression. Correlation analysis demonstrated that dry weight is highly correlated with plant height; inter node length, flag leaf length and number of shoot on bush. Using principal component (PC) analysis, the first two PCs with eigenvalues more than 1 contributed 70.87% of the variability among accessions. pc1, which is the most important component, explained 44.02% of the total variation and was positively related to plant height, inter node length, number of spikelet on spike, flag leaf length and spike length; PC2 accounted for 26.85% of the total variation and the characters with the greatest weight on this component were Number of Shoot on Bush and Dry Weight. Forty Agropyron accessions were grouped into four clusters.