Research Notes: U.S. Regional Soybean Laboratory and University
of Illinois, Urbana-Champaign
Date
1975-04-01
Authors
Bernard, R.
Cremeens, C.
Rode, M.
Wax, L.
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Abstract
Chief', a very tall Maturity Group IV variety, was used as a donor parent in backcrossing to 'Clark' to transfer Np (a gene for high phosphorus tolerance). In the field in 1963, I grew progenies from 40 selected Np F2 plants from Clark BC5 and was surprised to see 2 of the progenies uniformly very tall and 3 of them segregating approximately 1/4 tall plants. The Np gene appears to have no effect on field-grown plants in normal soils.