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Identification of novel brown midrib genes in maize by tests of allelism
Author(s) -
Ali F.,
Scott P.,
Bakht J.,
Chen Y.,
Lübberstedt T.
Publication year - 2010
Publication title -
plant breeding
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.583
H-Index - 71
eISSN - 1439-0523
pISSN - 0179-9541
DOI - 10.1111/j.1439-0523.2010.01791.x
Subject(s) - biology , gene , mutant , phenotype , allele , genetics , yield (engineering) , microbiology and biotechnology , materials science , metallurgy
With 2 tablesAbstract Brown midrib ( bm ) mutations are known to affect cell‐wall digestibility by altering the quantity and composition of lignins in cell walls, resulting in higher ethanol yield and increased cell‐wall digestibility. So far, four bm genes ( bm 1 , bm 2 , bm 3 and bm 4) were identified and mapped in maize, the last one ( bm 4) in 1947. In this study, 13 spontaneous mutations ( bm *A–M) resulting in the appearance of brown midribs were crossed with bm 1–4 for tests of allelism. From these tests, we report two new bm mutants bm 5 ( bm *F) and bm 6 ( bm *J) while other bm * lines were either found allelic to bm 1–4 or to one of the bm * lines.