TY  - SER
AU  - Al-Naggar,A.M.M.
AU  - Shabana,R.
AU  - Mahmoud,A.A.
AU  - Shaboon S.A.M.
TI  - Genetic improvement of maize for low-soil nitrogen tolerance via S1 recurrent selection
KW  - Corn
KW  - Genetics
KW  - Breeding
KW  - Nitrogen fertilizers
KW  - Soils
KW  - Nitrogen content
KW  - Plants
KW  - Effect of nitrogen on
KW  - genotype
N1  - Includes references
N2  - One cycle of S₁ recurrent selection for low-soil N tolerance was practiced in the Egyptian maize composite Giza-2 in five seasons during the period from 2004 to 2007. A total of 121 S₁ maize progenies were obtained in 2004 and evaluated in 2005 season under high-N (HN) and low-N (LN) environments. The best 18 S₁ progenies in grain yield were selected separately under HN and LN and grown to produce the S₂ 's. The selected HN and LN S2 lines were intercrossed in two isolated blocks in early 2006 season to produce two new populations i.e Giza 2-HN and Giza 2-LN. such populations were grown in late 2006 season in two isolated blocks and left for random mating to reach  equilibrium
UR  - http://nile.enal.sci.eg/EALE/2008/EJPB/1208/2/255.pdf
ER  -