Author
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Palmer, Reid |
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LEWERS, K - IOWA STATE UNIVERSITY |
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Submitted to: Crop Science
Publication Type: Germplasm Release Publication Acceptance Date: 5/15/1997 Publication Date: N/A Citation: N/A Interpretive Summary: This is a Germplasm Release, no Interperative Summary required. Technical Abstract: Thirty-four pairs of soybean germplasm lines were developed by backcrossing the ms6 and w1 alleles to 34 recurrent parents. The lines were developed with the ms6-w1 donor cytoplasm and the recurrent parent cytoplasms to form 34 near-isogenic pairs (68 lines total). Ten near-isogenic pairs, all white flower segregating at the Ms6 locus (Ms6 ms6 w1w1), were developed with the ms6-w1 donor cytoplasm and the recurrent parent cytoplasms. Twenty-four near isogenic pairs, cosegregating at the Ms6 and W1 loci in coupling phase (Ms6 W1 ms6 w1) were developed with the ms6-w1 donor cytoplasm and the recurrent parent cytoplasms. Nine of the recurrent parents are high-yielding accessions introduced into the U.S. Three Plant Introductions were from China, three from Japan, and three from the former U.S.S.R. Five lines are relevant ancestors of modern North American soybean cultivars, and contributed more than 55% of the Northern gene pool for cultivars released between 1971-1981. The seven public cultivars represent five different breeding programs and Plant Introductions have contributed 25% or more to the pedigrees. The 13 cultivars or breeding lines from private companies represent eight different companies, and Plant Introductions also have contributed 25% or more to the pedigrees. These germplasm lines will be useful in several areas of research, including genetic control of complex traits, prediction of parental value, and recurrent selection. |
