Indian Society of Genetics & Plant Breeding
Correlation and path analysis for direct as well as indirect
effects for different quantitative characters responsible for
contributing to volume and yield attributes were done in
full-sib progenies of selected clones of eastern cotton wood
(Populus deltoides Bartr) raised through line x tester
scheme. Values of genotypic correlation coefficients were
higher than values of phenotypic correlations coefficients
and almost similar in direction for most of the characters.
The highest significant positive correlation was found
between collar diameter and plant height (0.940).
Additionally, collar diameter showed significant and
positive correlation with plant height at first branch, root
length, internodal length, leaf number, leaf area and shoot
bark thickness. Of 13 characters, nine characters showed
positive direct effect on collar diameter. The largest negative
direct effect was contributed by leaf emergence period (–
0.142) followed by leaf number (–0.062), number of branches
(–0.054) and branch angle (–0.052). Direct effect of plant
height was found highest on collar diameter suggesting
its clear direct control over yield attributes in eastern
cottonwood.
Keywords: Poplar, correlation coefficients, path analysis
Year: 2015
Volume: 75
Issue: 1
Article DOI: 10.5958/0975-6906.2015.00024.3
Print ISSN: 0019-5200
Online ISSN: 0975-6906
N. B. Singh info_circle
Kadam Singh info_circle
Punit Choudhary info_circle
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