Resistance to Fusarium dry root rot disease in cassava accessions.

The objective of this work was to identify sources of resistance to dry root rot induced by Fusarium sp. in cassava accessions. A macroconidial suspension (20 µL) of 11 Fusarium sp. isolates was inoculated in cassava roots, from 353 acessions plus seven commercial varieties. Ten days after inoculation, the total area colonized by the pathogen on the root pulp was evaluated by digital image analysis. Cluster analysis revealed the presence of five groups regarding resistance. The root lesion areas ranged from 18.28 to 1,096.07 mm2 for the accessions BGM 1518 and BGM 556, respectively. The genotypes BGM 1042, BGM 1552, BGM 1586, BGM 1598, and BGM 1692 present the best agronomical traits.

Bibliographic Details

Main Authors:	OLIVEIRA, S. A. S. de, HOHENFELD, C. S., SANTOS, V. da S., HADDAD, F., OLIVEIRA, E. J. de
Other Authors:	SAULO ALVES SANTOS DE OLIVEIRA, CNPMF; CAMILA SANTIAGO HOHENFELD, UFRB; VANDERLEI DA SILVA SANTOS, CNPMF; FERNANDO HADDAD, CNPMF; EDER JORGE DE OLIVEIRA, CNPMF.
Format:	Artigo de periódico biblioteca
Language:	pt_BR por
Published:	2014-02-04
Subjects:	Bioprospecção, Germplasm bank, Bioprospection, Screening for resistance., Mandioca, Doença de planta, Banco de germoplasma, Manihot Esculenta.,
Online Access:	http://www.alice.cnptia.embrapa.br/alice/handle/doc/978567
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