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Registration of BEL‐W3, an Ozone‐Susceptible Tobacco Germplasm1 (Reg. No. GP 14)
Author(s) -
Menser H. A.,
Heggestad H. E.,
Grosso J. J.
Publication year - 1976
Publication title -
crop science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.76
H-Index - 147
eISSN - 1435-0653
pISSN - 0011-183X
DOI - 10.2135/cropsci1976.0011183x001600040056x
Subject(s) - germplasm , library science , citation , biology , horticulture , computer science
early x ' crosses among inbred lines of U.S. origin. These crosses were randomly mated for six generations. AS-G is a very early population (AES100) and has predominately dark yellow flint kernels. AS-DK (S)C3 (Rge. No. GP 68) was developed to provide a source of deep-kernel germplasm adapted to temperate latitudes. 'Cuzco Blanco', a deep-kernel variety of Peruvian origin, was crossed with 10 inbred lines (A90, A427, A495, A498, A509, A513, A556, CMD5, MSI 334, and N0203). Three cycles of recurrent selection for kernel depth were conducted using the Si progeny method, followed by three generations of random mating. ASDK (S)C3 is of AES500 maturity and has yellow floury kernels that average 1.5 cm in depth. AS-3(HT)C3 (Reg. No. GP 69) was developed through research on a recurrent selection method. Eight inbred lines (A73, A286, A295, A375, Oh5, Oh43, OhSIA, and W22) were combined in an eight-way cross that was randomly mated for one generation. This synthetic, AS-3 (HT)CO (formerly designated Minnesota Synthetic 3), was subjected to three cycles of recurrent selection for grain yield using the half-sib progeny method. The tester in each cycle was Minnesota Synthetic 1 (pedigree: A71, A374, B164, Mich. 265, Mich. 401, SD100, W20, and WR3). Effects of this recurrent selection were reported earlier (Achmad Baihaki. 1973. Effects of recurrent selection on genetic variability and performance of a synthetic maize variety. M.S. Thesis, Univ. of Minnesota, St. Paul.) AS-3 (HT)C3 is of AES500-600 maturity and has yellow dent kernels.