Inheritability of grain weight per spike in spring barley hybrids

Margarita Gocheva, Darina Valcheva

Abstract: In the period 2009-2011 was conducted genetic research on parental forms of spring barley and their hybrids to obtain information about the type of inheritability of the trait grain weight per a spike. As parental components were used 6 accessions of spring barley. For three consecutive years in a hybridization nursery were carried out 30 diallel crosses. Additive-dominant relationships of the trait were analyzed by the ratio between parameters (d/a). Results from the study provide broad information about the genetic control of the trait grain weight per spike. It was established that variance in hybrid populations is determined by the additive-dominant genetic system. Dominant action outperforms the additive and has greater significance in inheriting the attribute.

Keywords: genetical components; grain weight per spike; inheritability; spring barley

Date published: 2021-12-08