Biologija / Biology
 ISSN 1392-0146 ISSN 2029-0578 (online) |
2004 m. Nr. 4 Interaction of barley tweaky spike and laxatum
mutations in F1 hybrids
Only few genes are known to regulate the development of flower lodicules in Poacea plants. Among them are lax-a and tw. Ectopic expression of both mutant genes gives conversion of lodicules to stamens. By a comparative examination of the action of lax-a and tw genes on ear and flower structure and especially by a complementation test it has been proven that tw and lax a are in different loci. F1 hybrids between various lax a alleles and tw have a normal structure of flowers. Two alleles from Nordic Gene Bank have a stronger expression on flower structure in heterozygous state, but that phenomenon has been displayed only in 10% of the flowers tested.
Keywords: complementation, lodicule development, genes in different loci, different expression of alleles, barley |
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