Evaluation of relationships between some quantitative traits of winter rye inbred lines
Jan Kaczmarek
kghrin@upwr.edu.plKatedra Hodowli Roślin i Nasiennictwa, Akademia Rolnicza we Wrocławiu (Poland)
Henryk Bujak
Katedra Hodowli Roślin i Nasiennictwa, Akademia Rolnicza we Wrocławiu (Poland)
Władysław Kadłubiec
Katedra Hodowli Roślin i Nasiennictwa, Akademia Rolnicza we Wrocławiu (Poland)
Abstract
A collection of winter rye inbred lines was investigated with respect to correlation and cause-and-effect relationships existing between the weight of grain per ear and some other traits. The application of path coefficient analysis complemented the method of simple and multiple correlation, as it enabled estimation of the direct influence of each trait on the dependent trait and determination of the so-called indirect effects of a given trait through each of the remaining ones. The study material was composed of 120 winter rye lines of different degree of inbred: from S6 to S31. Six traits were chosen for path analysis; five of them (plant height, uppermost internode length, ear length, number of grains in an ear, 1000-grain weight) were treated as independent variables, whereas the weight of grain from an ear was a dependent variable. The analysis of path coefficients enabled to choose the traits, which most strongly determined the weight of grains per ear. The number of grains in an ear and 1000-grain weight were found to have the most decisive direct influence on the weight of grains in an ear.
Keywords:
correlation coefficient, inbred lines, path coefficient, winter ryeReferences
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Authors
Jan Kaczmarekkghrin@upwr.edu.pl
Katedra Hodowli Roślin i Nasiennictwa, Akademia Rolnicza we Wrocławiu Poland
Authors
Henryk BujakKatedra Hodowli Roślin i Nasiennictwa, Akademia Rolnicza we Wrocławiu Poland
Authors
Władysław KadłubiecKatedra Hodowli Roślin i Nasiennictwa, Akademia Rolnicza we Wrocławiu Poland
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