Valor nutritivo do colmo de híbridos de milho colhidos em três estádios de maturidade

Salazar, Diego Reynaga, Stabile, Samuel dos Santos, Guimaraes, Paula de Souza, Guidetti Zagatto Paterniani, Maria Elisa Ayres, dos Santos, Marcos Veiga and Prada e Silva, Luis Felipe (2010) Valor nutritivo do colmo de híbridos de milho colhidos em três estádios de maturidade. Pesquisa Agropecuaria Brasileira, 45 7: 758-766. doi:10.1590/S0100-204X2010000700018


Author Salazar, Diego Reynaga
Stabile, Samuel dos Santos
Guimaraes, Paula de Souza
Guidetti Zagatto Paterniani, Maria Elisa Ayres
dos Santos, Marcos Veiga
Prada e Silva, Luis Felipe
Title Valor nutritivo do colmo de híbridos de milho colhidos em três estádios de maturidade
Translated title Stalk nutritive value of corn hybrids harvested at three maturity stages
Language of Title por
Journal name Pesquisa Agropecuaria Brasileira   Check publisher's open access policy
Language of Journal Name por
ISSN 0100-204X
1678-3921
Publication date 2010-07-01
Sub-type Article (original research)
DOI 10.1590/S0100-204X2010000700018
Open Access Status DOI
Volume 45
Issue 7
Start page 758
End page 766
Total pages 306
Place of publication Brasilia, Brazil
Publisher Empresa Brasileira de Pesquisa Agropecuaria
Language por
Formatted abstract
The objective of this work was to evaluate the effect of plant maturing on the stalk nutritional quality of corn hybrids, in order to define selection criteria in breeding programs of maize for silage. Fifteen hybrids from the Instituto Agronômico breeding program in Campinas, SP, Brazil, harvested at 90, 120 and 150 days after germination, were evaluated in a randomized block design, with three replicates. The fourth and fifth stalk internodes were removed for determination of chemical composition and in vitro digestibility. In both internodes, fiber content decreased and lignin content increased as maturity advanced. Dry matter digestibility of the fifth internode increased with maturity, while there was no change in the fourth internode. Maturity reduced neutral detergent fiber digestibility (DIVFDN) of the fourth internode but not of the fifth one. The forth internode DIVFDN can be used as a selection criterium for nutritional quality improvement of corn hybrids. There was great genetic variability of quality parameters, among harvested hybrids at the three maturity stages, which highlights the possibility of implementing breeding programs for nutritional quality of corn for silage.
Keyword Breeding
Cell wall
Degradability
Lignin
Zea mays
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: Queensland Alliance for Agriculture and Food Innovation
 
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Created: Fri, 17 Mar 2017, 14:36:32 EST by Luis Prada E Silva on behalf of Learning and Research Services (UQ Library)