Correlation and path analysis of the yield and some traits related to the productivity and quality of winter feed barley lines from var. parallelum

Darina Dimova, Milka Dimitrova - Doneva

Abstract: The study was conducted in the period 2015-2017 at the Institute of Agriculture - Karnobat and includes 15 lines of winter feed barley from var. parallelum. The researched materials are a selection from the genеtic stock of the institute. The aim of the present study was to obtain information on the interrelationships between some traits related to yield, as well as their direct and indirect effects on grain yield and quality in winter feed barley from var. parallelum. The experiment was derived in four replications, with the size of the harvest plot 10 m2. The varieties Veslets and Aheloy 2 were used as basic standards.Grain yield (kg/ha), number of tillers per plant, number of productive tillers per plant, plant height (cm), spike length (cm), sterile spikelet number per a spike, number of grains per a spike, weight of grain per a spike (g), grain weight of the whole plant (g), thousand grain weight (g) and harvest index (%) were reported. It was found that the created lines have good elements of productivity and high yield. The K-630-10 line has formed the largest number per a spike 4.80. The longest class is the line K-2518-10- 6.34 cm, the same line has formed the largest number of grains per a spike - 69.46 pieces. With the smallest number of sterile spikelets is the line K-1900- 08- 7.44 pieces. With the highest grain weight per a spike is again line K-2518-10-3.09 g, it also formed the highest grain weight of the whole plant-9.95g, as well as the highest thousand grain weight - 40.28 g. This line also has the highest productivity - 6790 kg/ha. The highest harvest index is the line K-630-10- 52.92%. A high proven positive correlation was found between the weight of the grain per spike and the number of grains per a spike (r = 831**), between the weight of the grain plant and grain weight per a spike (r = 790 **). Of the studied quantitative traits, number of grains per spike, thousand grain weight and, number of productive tillers per plant have highest positive direct effect on the yield.

Keywords: correlation; elements of yield; path analysis; quality; winter barley

Date published: 2021-10-28