Performance of Yield and Its Components of Fourteen Hull-Less Barley Genotypes Grown in Five Locations in Egypt

Abstract

Barley performance varies among genotypes and/or due to the different response of a genotype to the prevailing climatic factors where it is grown. The aim of the present investigation was to study the performance of some promising lines and new varieties as well as some cultivars of hull-less barley under the conditions of five locations of Egypt, to identify which one could be grown and produce high grain yield all over locations or in a specific location. This investigation was carried out at five locations (Nubaria, Sakha, Gimmeza, Quntra Sharq and Giza) in two seasons (2013/2014 and 2014/2015) using a randomized complete block design with three replications and 14 genotypes, i.e. 9 promising lines, three cultivated varieties Giza 129, Giza 130 and Giza 131 and the two new varieties Giza 135 and Giza 136. Results indicated a negative and significant correlation between either days to flowering or days to maturity and grain yield and its components in both seasons and combined across seasons. The results showed that L2 and L3 are promising lines, Giza 135 and Giza 136 new varieties produced high yield and its components. From these results it could be concluded that the most suitable genotypes for Nubaria location were L2, L3, L4 and Giza 136 while the most suitable ones for Sakha and Gimmeza locations were L2, L3 and Giza 136. However, Giza 136, Giza 135 and L3 were the most suitable genotypes for Quntra Sharq location. Meanwhile, L2, L3, L7 and Giza 136 genotypes were superior at Giza location. This means that L3 genotype and Giza 136 cultivar had stable productivity under the conditions of these locations. Also L3 genotype was a promising line to be released as a good variety in general and under high productive environments in particular. However, Giza 136 was stable and also adapted to less productive environments.