Biographical Memoirs Volume 78 (2000) / Chapter Skim
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George Frederick Sprague
George Frederick Sprague
Pages 258-275
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From page 259... ...
He was trained in classical genetics, but he also macle significant contributions to unclerstancling the inheritance of quantitative traits, experimental methods for evaluation of lines for use in hybrids, relative efficiency of evaluating hybrids over locations en c! years, clevelopment en cl improvement of germplasm resources for the extraction of lines for use in hybrids, types of genetic effects important for the expression of heterosis, en c!
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From page 260... ...
Continuccl selection within the synthetic cultivars was concluctecl and they were integrated with line and hybrid development programs. One of these synthetic cultivars, Iowa Stiff Stalk Synthetic, became an important germplasm source of inbred lines that were, and continue to be, prominent in the pedigrees of hybrids in the U.S.
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From page 261... ...
In college, Sprague obtained employment with the Animal Husbandry Department tencling experimental feecl trials of swine en c! sheep.
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From page 262... ...
suggest various career opportunities. Some students were steered toward SmithHughes teaching en cl county agent work en cl a few toward research, Sprague was one of the latter.
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From page 263... ...
, and two grancIchiTciren. PROFESSIONAL HISTORY After the completion of his graduate studies, Sprague continual his professional career as an assistant agronomist with the USDA at Arlington Farms.
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From page 264... ...
lines to form a synthetic cultivar, clesignatecl as Stiff Stalk Synthetic. Stiff Stalk Synthetic became an important cultivar in his future professional career.
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From page 265... ...
exciting time in corn research, because the inbrecI-hybricl concept was becoming a reality, en cl several of the more wiclely grown hybrids (e.g., U.S.13, IA939, IAl3) included inbred lines clevelopecl by the publicly supported brawling programs.
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From page 266... ...
Continuccl selection within Iowa Stiff Stalk Synthetic eventually became the source germplasm for inbrecis B73, B84, Bl04, en cl Bll0. Because of the debate on the relative importance of clifferent types of genetic effects in the expression of heterosis observed in corn hybrids, Sprague initiated, in 1949, another selection stucly that incluclecl Iowa Stiff Stalk Synthetic en cl Iowa Corn Borer Synthetic No.
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From page 267... ...
from Iowa Stiff Stalk Synthetic en cl inbred lines B90, B9l, B95, B97, B99, en cl Bll2 were clevelopecl from Iowa Corn Borer Synthetic No.
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From page 268... ...
specific combining abilities stimulatecl theoretical research for the types of genetic effects important for each en cl a method to evaluate inbred lines in hybrids. The terms "general and specific combining abilities" are commonly usecl throughout all of plant brawling.
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From page 269... ...
He resumed a more active research program en c! was an active participant in the corn research program.
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From page 270... ...
He also server! about ten years on the Maize Crops Advisory Committee, a committee to clevelop en cl provide guidance for a national plan for corn germplasm enhancement.
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From page 271... ...
He served on a special mission for the clevelopment of hybric! corn-breecling programs in Europe sponsored by the Marshall Plan en cl assisted the USDA advisement on the hybrid corn program for Yugoslavia.
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From page 272... ...
S Department of Agriculture 1968 Fellow, Washington Academy of Sciences Member, National Academy of Sciences 1972 Crop Breeding Award, National Council of Commercial Plant Breeders 1978 Wolf Prize in Agriculture, Wolf Foundation, Israel 1980 DeKalb Career Award, Crop Science Society of America 1984 Fellow, Crop Science Society of America 1997 Honorary Member, American Society of Agronomy THREE SOURCES OF information were excellent aids to summarize the long career of George F
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From page 273... ...
General vs. specific combining ability in single crosses of corn.
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From page 274... ...
1. Error, tester x line and line components in top cross experiments.
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From page 275... ...
1974 Plant breeding, molecular genetics and biology. NAS-NRS Conference on Genetic Improvement of Seed Proteins.
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