Paper Details

Grouping of wheat recombinant inbred lines (RILs) in terms of yield and yield component at two years

Mozhgan Shirinpour, Saeid Aharizad

DOI: https://dx.doi.org/10.12692/ijb/5.12.471-477

Int. J. Biosci. 5(12), 471-477. December, 2014. (PDF)

Abstract:

To study genetic diversity and grouping of wheat recombinant inbred lines (RILs) in terms of yield and yield component, 38 RILs derived from across between Zagros (facultative type, early maturing and drought resistant) and Norstar (winter type, late maturing and cold resistant) along with parental lines were evaluated in randomized complete block design (RCBD) with three replications during 2010-2011 and 2011-2012 years. Based on combined analysis of variance, significant differences were observed between lines for grain yield and 1000 grain weight. Line × year interaction was significant for number of grain per spike, number of spike per square meter and 1000 grain weight. Based on two years mean for number of grain per spike lines of 51, 32, 296, 15 and 58, number of spike per square meter lines numbers 183, 145, 293, 328, 195 and 184, 1000 grain weight lines 145, 93, 159, 46 and Zagros and grain yield lines 28, 31, 145, 281, 15, 93, 328, 296, 239, 195, 293 and 23 were identified as the superior lines. The maximum genetic and phenotypic coefficient of variation and genetic gain were estimated for grain yield and the highest heritability was observed for1000 grain weight. Cluster analysis using Ward’s method and based on yield and yield component data assigned the lines into three groups. Based on deviation from total average, second group lines were superior than other two groups.