@ARTICLE {UDO:2017,
title = {Physiological and morphological changes associated with recurrent selection for low nitrogen tolerance in maize},
author = {Udo, E. F. and Ajala, S. and Olaniyan, A. *},
journal = {Euphytica},
year = {2017},
volume = {213},
number = {140},
pages = {1--13},
issn = {0014-2336},
note = {WAHub; CRP Maize; Maize; Published online 17 June 2017},
doi = {10.1007/s10681-017-1928-y},
}