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|Title:||Improvement of the maize population "Elite Synthetic NT" for soils with low nitrogen content.|
|Authors:||SANTOS, M. X.|
GUIMARAES, P. E. O.
PACHECO, C. A. P.
FRANCA, G. E.
PARENTONI, S. N.
GAMA, E. E. G.
LOPES, M. A.
|Affiliation:||EMBRAPA/CNPMS; PAULO EVARISTO DE O GUIMARAES, CNPMS; SIDNEY NETTO PARENTONI, CNPMS.|
|Citation:||In: SYMPOSIUM OF DEVELOPPING DROUGHT AND LOW N-TOLERANCE MAIZE, 1996, El Batan, Mexico. Proceedings... El Batan: CIMMYT, 1997. p. 508-510.|
|Description:||The maize population 'Elite Synthetic NT' has been selected with the objective of improvement its yield potential in soils with low nitrogen (N) availability. During the 1994/95 season, 144 half-sib families showing good male-female flowering synchrony were evaluated with and without N fertilizer at Sete Lagoas, MG. The experimental design utilized was a 12 x 12 lattice, with 5 m plots. The open-pollinated variety 'BR 106', selected in soils with high fertility, was used as a between block check. Mean ear weight for the selected families in N+ and N-environmental averaged 4,511 kg/ha and 3,327 kg/ha, respectively. Yield reduction between environmental averaged 27.14% for the selected families and 65.8% for BR 106. The results indicate that selection inN-environments is an efficient approach for developing genotypes with better performance in soils with low nitrogen content.|
|Type of Material:||Parte de livro|
|Appears in Collections:||Artigo em anais de congresso (CNPMS)|