SRL for [the original snc1 mutation ( from Col )]: For example , to map the mos ( modifiers of snc1 ) mutants , we introgressed [the original snc1 mutation ( from Col )] into the Ler ecotype ( named Ler - snc1 ) through repetitive back - crossing with Ler , and selection of snc1 homozygous plants in the F2 ( 5 ) .
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