The Identification of Mutant Traits of 9 Naked Barley Lines with Spike Branch and the Analysis of the Association between These Mutant Traits

Purpose Ynbs line is a spike branch mutant of naked barley in M7 generation,and their some traits including spike branch can be stable inheritance from one generation to another,but the difference of these mutant traits between Ynbs lines and the association between different mutant traits of Ynbs lines have not be reported so far.Method Twenty-four materials including 9 Ynbs lines, 13 recombination inbred lines, 1 mutant parent and 1 prbs mutant,were be planted in a completely randomized block with 3 repetitions,SPSS 19.0 was employed to analyze the phenotypic difference of 11 traits between 24 materials, and the association between these traits.Results Nine traits including the spike degeneration, floret increase and seed setting rate decrease were mutant traits for 9 Ynbs lines. The spike number and seed setting rate of 9 Ynbs lines ranged from 10.53±0.53 to 13.23±0.22, from 11.30%±3.71% to 42.40%±3.61%, respectively, and were both extremely significantly(PPPPConclusion The inheritance of spike branch in Ynbs lines is associated to that of spike degeneration, of floret increase and of seed setting rate decrease, respectively,Ynbs line is an important resource for these studies including the developmental inheritance of spike branched in barley.