Author (s): N. Zeba1* and M. Isbat2
*Corresponding author, E-mail: naheed0359@hotmail.com
*Corresponding author, E-mail: naheed0359@hotmail.com
Abstract
Fifteen diverse tobacco (Nicotiana tabacum) genotypes were evaluated in a field experiment during rabi seasons of 1996-97 and 1997-98 for yield and yield contributing agronomic. Data were collected on quantitative and visually assessed traits including plant height, number of leaves per plant, leaf length, leaf width, days to flowering, number of pods per plant, pod length, pod diameter, weight of single pod and weight of seeds per pod. All the traits were analyzed using multivariate analysis technique. Most of the important traits of tobacco genotypes showed a wide range of variation. The first three principal components with Eigen values contributed 64.20% of the total variability. The genotypes were grouped into four clusters based on Euclidean distance. Among ten quantitative traits, days to flowering contributed maximum towards divergence. Considering the number of leaves, leaf width and days to flowering, cluster II and IV exhibited high heterosis for yield as well as earliness, whereas cluster I and III exhibited maximum heterosis for plant height.
Key Words: Cluster Analysis, Principal Component Analysis dna Nicotiana Tabacum
J. Expt. Biosci. 2(1): January 2011
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