Descriptors :
Cytoplasm,Oats,Genotypic correlation,Phenotypic corrlation
Abstract :
Thirty sets of reciprocal isopopulations,each with 20 F2-derived oat lines from the BC0,BC1,BC2 of all possible matings among five Avena sterilis L.accessions and two A.sativa cultrivars,were evaluated in a replicated field trial to detrmine wherther groat protein content was influenced by cytoplasmic inheritance and to study associations between protein content and agronomic traits. A.sterilis cytoplasm had no direct effect on groat protein content,but significant interactions between the cytoplasms and nuclear genes from A.sativa and A. sterilis were detected.Thus, the potential may exist for improving groat protein content of cultivated oats by exploiting specific intra and interspecific nucleo-cytoplasmic combinations.Generally,associations of various traits with groat protein content showed on trend for change over successive backrosses but phenotypic and genotypic correlations between protien percentage and all traits except harvest index tended to be larger for lines with A.strilis cytoplasm than those with A sativa cytoplasm.
