Level of manifestation and connection between productivity of height of plants and resistance to lodging of winter barley in Forest-steppe

Abstract

The purpose. To determine the level of manifestation and connection of productivity, height of plants and resistance to lodging of winter barley in central Forest-steppe of Ukraine. To select grades with optimum ratio of the named parameters. Methods. Field — standard for selection of eared cultures, statistical — dispersive, variation, correlation and graphic analyses with the use of programs Excel 2010 and Statistica 6.0. Results. On the basis of long-term researches (2012 – 2016) of 29 genotypes of winter barley they fixed positive connection of productivity and resistance to lodging (r=0,5880) and negative between latter and height of plants (r= – 0,6697), and also absence of correlation (r= – 0,1044) between productivity and height of plants. Grades are selected which considerably exceed the national standard on productivity and combine it with the increased resistance to lodging — Cartel, Paladin Mironovskiy, Atlant Mironovskiy. Conclusions. The opportunity of combination selection by increased and more stable level of manifestation of productivity of winter barley winter is proved at simultaneous decrease in height of plants and improvement of resistance to lodging. New grades with the best combination of the studied attributes which should be introduced in production in Forest-steppe are selected. They also may be used as valuable genetic source for creation of new initial stock.