Field and greenhouse inoculation methods for assessment of sheath blight resistance in rice.
AUTOR(ES)
ARAÚJO, L. G. de
FONTE
Crop Breeding and Applied Biotechnology
DATA DE PUBLICAÇÃO
2011
RESUMO
Field and greenhouse inoculation methods were compared to determine the genetic variation for resistance to Rhizoctonia solani in 38 somaclones of rice cultivar Metica-1. Rice plants in pots were inoculated with isolate 4F1 at the age of sixty four days, with 2.0 g of the fungal culture, multiplied on rice grain and hull medium and placed on the soil surface around the plant. The differences among somaclones in relation to lesion height were significant and varied from 6.5 to 15.5 cm. In the field trial of artificial inoculation with fungal culture, 52 days after planting, the lesion height varied from 6.2 to 17.7 cm. The correlation between disease severity in the greenhouse and the field was positive and highly significant (r=0.44; P< 0.01), indicating the greenhouse inoculation as a safe method for screening germplasm for sheath blight resistance.
ASSUNTO(S)
arroz oryza sativa rice rhizoctonia solani somaclones resistência
ACESSO AO ARTIGO
http://www.alice.cnptia.embrapa.br/handle/doc/215830Documentos Relacionados
- Inoculation methods under greenhouse conditions for evaluating soybean resistance to sudden death syndrome.
- Expression of Xa1, a bacterial blight-resistance gene in rice, is induced by bacterial inoculation
- Optimal nitrogen fertilization timing for upland rice.
- Expansins and Internodal Growth of Deepwater Rice.
- Greenhouse gas emission, water quality and straw decomposition as a function of rice postharvest field management