Data/hora: 08/06/2024 16:22:20

Biblioteca(s): | Embrapa Caprinos e Ovinos.
Tipo da produção científica: | Artigo em Periódico Indexado
Circulação/Nível: | A - 1
Data corrente: | 19/02/2015
Data da última atualização: | 15/07/2015
Autoria: | FREIRE, A. I.; DIAS, K. O. G.; OLIVEIRA, L. B. V.; NALIN, R. S.; GUEDES, F. L.; SOUZA, J. C.
Afiliação: | Universidade Federal de Lavras (UFLA) - Lavras, MG, Brasil; UFLA - Lavras, MG, Brasil; UFLA - Lavras, MG, Brasil; UFLA - Lavras, MG, Brasil; FERNANDO LISBOA GUEDES, CNPC; UFLA - Lavras, MG, Brasil.
Título: | Genetic control of the number of leaves above the ear in maize.
Ano de publicação: | 2015
Fonte/Imprenta: | Genetics and Molecular Research, Ribeirao Preto, v. 14, n. 1, p. 1318-1323, Mar. 2015.
DOI: | http://dx.doi.org/10.4238/2015.February.13.11
Idioma: | Inglês
Conteúdo: | Abstract: Among the many implications of climatic change on agriculture, drought is expected to continue to have a major impact on agribusinesses. Leaf curling is an anatomical characteristic that might be potentially used to enhance plant tolerance to water deficit. Hence, we aimed to study the genetic control of leaf curl in maize. From 2 contrasting inbred lines for the trait, generations F1, F2, and the backcrosses were obtained. All of these generations were evaluated in a randomized block design with 2 replicates. Leaf curl samples were collected from 3 leaves above the first ear at the tasseling stage, and quantified by dividing the width of the leaf blade with natural curling against its extended width. The mean and variance components were estimated by the weighted least square method. It was found that the trait studied has predominance of the additive effects, with genetic control being attributed to few genes that favor selection and exhibit minimal influence from the environment.
Palavras-Chave: | Genetic components; Maize.
Thesagro: | Anatomia vegetal; Área foliar; Folha; Melhoramento genético vegetal; Milho; Zea mays.
Thesaurus Nal: | Leaf area; Leaves; Plant anatomy; Plant breeding; Plant genetics.
Categoria do assunto: | G Melhoramento Genético
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/118123/1/CNPC-2015-Genetic.pdf
Registro original: | Embrapa Caprinos e Ovinos (CNPC)
Exemplares: | CNPC - (28446-1) - UPC - AP - DD -  -  -  - DIS