- Dyulgerov, B. Dyulgerova
Institute of Agriculture, 8400 Karnobat, Bulgaria
(Manuscript received 24 July 2017; accepted for publication 19 January 2018)
Abstract. The objective of this investigation was to study the phenotypic diversity among six-rowed winter barley varieties. The study was conducted in the Institute of Agriculture – Karnobat, during the period 2014/2015-2015/2016. The diversity among 22 barley varieties was estimated using principal component analysis and cluster analysis. Maximum variation was found for grain weight per a spike and grain number per a spike. The presence of significant variation among the evaluated six-rowed winter barley varieties suggests an opportunity for improvement of grain yield through using promising genotypes as parents in the winter barley improvement program.