1Ethiopian Biotechnology Institute, P. O. Box 32853, Addis Ababa, Ethiopia
2KL University, Department of Bio-Technology, Green Field, Vaddeswaram-522502, Guntur District (Andhra Pradesh), India
3Ethiopian Institute of Agricultural Research, Melkasa Agricultural Research Centre, Plant Biotechnology Research Program, P. O. Box 436, Adama, Ethiopia
*(e-mail: alloaman2010@gmail.com)
Online published on 18 April, 2020.
Five hundred eighty-five barley landraces, categorized into three maturity groups
i. e. early, medium and late, were assessed for 18 quantitative characters in augmented design with six blocks in 2018 and 2019. The estimates of genetic parameters indicated that values of genotypic coefficient of variation (GCV) and phenotypic coefficient of variation (PCV) were lower within the individual maturity group for all the characters, except effective tillers per plant in medium group and plant height and grain yield per plant in early group for which the values of these parameters were higher than those calculated on overall basis. Similar trend in the estimates of heritability and genetic advance was observed. Influence of maturity time on correlation was observed in many instances. Significant positive correlation of grain yield per plant with days to ear emergence in late group became non-significant in early group. Its significant negative associations with days to maturity and vegetative period in late group were shifted to significantly positive and non-significant, respectively, in early group. These and several other desirable changes in relationships among characters due to early cultivar development have been observed. Further study of genetic analysis using segregating generation of appropriate material with multi-location testing is suggested.
Barley landraces, Correlation, Grain filling period, Heritability, Maturity times
