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Genetic diversity of the monomeric prolamins and hordein in hulless barley genotypes and their relation with agronomical traits

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Abstract:

In order to compare polymorphism resulting from monomeric prolamine and hordein, 63 genotypes of hulless barley from ICARDA were investigated. Also, to compare the patterns observed in the analyses of storage proteins and their relation with morphologic and phenologic traits, 20 agromorphological traits were recorded. In the analysis of the hordeins, no polymorphism was observed in the area D hordein. However, 10 patterns in the area C hordein, and 13 patterns in the area B hordein were observed; and in total 32 bands and 32 patterns were observed. The average genetic diversity index for these proteins was calculated as H = 0.866. In the analysis of the monomeric prolamins, which was performed with the Acid-PAGE method, 15, 9, 24, and 20 patterns were observed for the , , , and areas, respectively. The average of the genetic diversity index for these proteins was H = 0.889, and in total 33 bands as well as 57 patterns were observed. In the analysis of the monomeric prolamins, 51 genotype having unique patterns were identifiable while in the analysis of the hordeins, only 18 samples were identified. With regard to the fact that monomeric prolamins enjoy a greater diversity than hordeins and are more powerful in identifying samples and regarding the simple, in addition to the low cost of conducting the analysis, it can be used in a variety of genetic studies such as genetic diversity assessment, identifying genotypes and determining the phylogenic relations in barley. In the analysis of hordeins, one pattern was found among the patterns of area B hordein that was related to the traits of days to heading and days to maturity.

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