Title:	Avaliação de genótipos de girassol em ambientes no Cerrado do Distrito Federal
Authors:	Lira, Ellen Grippi
Orientador(es)::	Fagioli, Marcelo
Coorientador(es)::	Amabile, Renato Fernando
Assunto::	Girassol - sementes Girassol - genótipos Sementes - qualidade Cerrados - Distrito Federal (Brasil)
Issue Date:	15-Apr-2016
Data de defesa::	29-Feb-2016
Citation:	LIRA, Ellen Grippi. Avaliação de genótipos de girassol em ambientes no Cerrado do Distrito Federal. 2016. viii, 84 f., il. Dissertação (Mestrado em Agronomia)—Universidade de Brasília, Brasília, 2016.
Abstract:	Sunflower (Helianthus annuus L.) is an important crop because provides high-quality oil. Originally from North America, it is now grown in many countries, a fact that is due to the positive results of breeding programs. It is also characterized by its adaptability, being used as a second crop. In Brazil, materials with high oil content, high productivity and resistance to abiotic and biotic stress are the main goal. Sunflower has a great potential in the Brazilian Savannah, because it can be used in crop rotation. In this sense, it is necessary to have more studies and research activities that provide information about the performance of sunflower genotypes in different locations, enabling the success of breeding programs. This study aimed to characterize sunflower genotypes in different environments of the Brazilian Savannah in the Federal District, taking into account genetic parameters, agro-morphological characteristics, severity of alternaria leaf spot and seed quality. Sixteen sunflower genotypes were evaluated in 2014, at experimental areas of Embrapa Cerrados (Federal District - Brazil) located at 15º 35' 30" S latitude, 47º 42' 30" W longitude and 1.007 m above sea level, and of Embrapa Produtos e Mercado (Federal District – Brazil), located at 15º 54' 53" S latitude, 48º 02' 14" W longitude and 1.254 m above sea level. A complete randomized block design was used. Analysis of variance showed significant differences among genotypes. The environment influenced the performance of the genotypes and the severity of alternaria. GNZ NEON, M734, SYN 3950HO, AGUARÁ 06, SYN 045, MG 360 and HELIO 251 detained best results at electrical conductivity test. There were more symptoms of alternaria leaf spot in the lower third of the plants. The genotypes CF 101, ADV 5504, BRS G42, HELIO 250, SYN 3950HO, BRS 323, HELIO 251, AGUARÁ 06 and AGUARÁ 04 expressed lower AUDPC values in the lower third. The AUDPC values were low, indicating little disease. Environmental conditions did not favor alternaria leaf spot. The genotypes HELIO 251, MG 305 and SYN 045 had the best results for grain yield. BRS G42, CF 101 and BRS 323 detained lower values for height and days to flowering.
metadata.dc.description.unidade:	Faculdade de Agronomia e Medicina Veterinária (FAV)
Description:	Dissertação (mestrado)—Universidade de Brasília, Faculdade de Agronomia e Medicina Veterinária, 2016.
metadata.dc.description.ppg:	Programa de Pós-Graduação em Agronomia
Licença::	A concessão da licença deste item refere-se ao termo de autorização impresso assinado pelo autor com as seguintes condições: Na qualidade de titular dos direitos de autor da publicação, autorizo a Universidade de Brasília e o IBICT a disponibilizar por meio dos sites www.bce.unb.br, www.ibict.br, http://hercules.vtls.com/cgi-bin/ndltd/chameleon?lng=pt&skin=ndltd sem ressarcimento dos direitos autorais, de acordo com a Lei nº 9610/98, o texto integral da obra disponibilizada, conforme permissões assinaladas, para fins de leitura, impressão e/ou download, a título de divulgação da produção científica brasileira, a partir desta data.
DOI:	http://dx.doi.org/10.26512/2016.02.D.19950
Appears in Collections:	Teses, dissertações e produtos pós-doutorado

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