Data/hora: 01/06/2024 18:31:12

Biblioteca(s): | Embrapa Unidades Centrais.
Data corrente: | 13/11/2008
Data da última atualização: | 29/06/2018
Autoria: | VIEIRA, R. F.; CARNEIRO, J. E. S.; LYNCH, J. P.
Afiliação: | Rogério Faria Vieira, Empresa de Pesquisa Agropecuária de Minas Gerais; José Eustáquio Souza Carneiro, Universidade Federal de Viçosa/Departamento de Fitotecnia; Jonathan Paul Lynch, Penn State University /Department of Horticulture.
Título: | Root traits of common bean genotypes used in breeding programs for disease resistance.
Ano de publicação: | 2008
Fonte/Imprenta: | Pesquisa Agropecuária Brasileira, Brasília, DF, v. 43, n. 6, p. 707-712, jun. 2008
Idioma: | Inglês
Notas: | Título em português: Características de raízes de genótipos de feijão usados em programas de melhoramento para resistência a doenças.
Conteúdo: | The objective of this work was to assess root traits of 19 common bean genotypes, used in breeding programs for disease resistance. Genotypes DOR 364 and G 19833 were used as deep and shallow basal root checks, respectively. The number of whorls and basal roots were assessed on five-day old seedlings grown in germination paper. Growth pouch studies were conducted to evaluate basal root gravitropism and lateral root length from primary roots, in seven-day old seedlings. The following root gravitropic traits were estimated: basal growth angle, shallow basal root length (localized in the top 2 cm), and relative shallow basal root growth. Number of whorls varied from 1.47 to 3.07, and number of basal roots ranged from 5.67 (genotype TO) to 12.07 (cultivar Jalo MG-65). Cultivars BRS MG Talismã, Carioca, BRS Pioneiro, and Diamante Negro exhibited shallow basal roots, while genotypes Vi-10-2-1, TU, AB 136, and México 54 showed deep basal roots. Cultivar Jalo MG-65 showed more lateral roots from the primary root than the other genotypes. Genotypes used on common bean breeding programs for disease resistance have great variability on basal and primary root traits.
Palavras-Chave: | basal roots; gravitropismo de raízes; lateral roots; primary root; raiz principal; raízes basais; raízes laterais; root gravitropism.
Thesagro: | Phaseolus Vulgaris.
Categoria do assunto: | --
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/106654/1/Root-traits.pdf
Registro original: | Embrapa Unidades Centrais (AI-SEDE)
Exemplares: | AI-SEDE - (44832-1) - UPE - AP - PP - 630.72081 - P474 -  - DIS