Title:	Selecting new Brachiaria for brazilian pastures.
Authors:	VALLE, C. B. do EUCLIDES, V. P. B. MACEDO, M. C. M. VALERIO, J. R. CALIXTO, S.
Affiliation:	CACILDA BORGES DO VALLE, CNPGC; VALERIA PACHECO BATISTA EUCLIDES, CNPGC; MANUEL CLAUDIO MOTTA MACEDO, CNPGC; JOSE RAUL VALERIO, CNPGC; SILVANO CALIXTO, CNPGC.
Date Issued:	2001
Citation:	In: INTERNATIONAL GRASSLAND CONGRESS, 19., 2001, São Pedro. Grassland ecosystems: an outlook into the 21st century: proceedings. Piracicaba: SBZ: FEALQ, 2001.
Pages:	p. 536-537.
Description:	Brazilian beef production relies heavily on cultivated pastures, of which about 80% are planted mainly to two Brachiaria cultivars. The narrowness of diversity associated with reproduction by apomixis of most plants in this genus prompted an intense search for new cultivars amongst recently collected and introduced ecotypes from Africa. This paper reports results for a three-year evaluation of 21 pre-selected ecotypes in two typical Cerrado ecosystems. Plots, replicated four times, were selected in rows and cut every 6 weeks during the rainy season followed by a cut in the middle and one at the end of the dry season. Significant differences wee found between ecotypes, seasons and years for total, leaf + stem dry matter production, percentage of leaves, leaf: sterm ratio and regrowth rate. Ecotypes differed in the two ecosystems for percentage of leaves, leaf: stem ratio and regrowth. Superior ecotypes (BRA004308, 003361, 003441) could be identified and were equally advantageous in both ecosystems.
Thesagro:	Brachiaria Características Agronômicas Cerrado Melhoramento Genético Vegetal Pastagem Seleção
NAL Thesaurus:	Apomixis Genotype-environment interaction Pastures Plant breeding Savannas
Keywords:	Interação genótipo ambiente
Notes:	(ID n. 13-14).
Type of Material:	Artigo em anais e proceedings
Access:	openAccess
Appears in Collections:	Artigo em anais de congresso (CNPGC)