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| Cacique,Isaias Severino; Domiciano,Gisele Pereira; Moreira,Wiler Ribas; Rodrigues,Fabrício Ávila; Cruz,Maria Fernanda Antunes; Serra,Núria Sierras; Català,Ana Botta. |
| Blast, caused by Pyricularia oryzae, is the most important fungal disease of rice worldwide. This study aimed to compare root and foliar supply of soluble silicon (Si) on rice resistance to blast. The application of soluble Si to the roots increased Si concentration in leaf tissues as compare to plants grown in soil amended with calcium silicate. There was no increase in leaf Si concentration after soluble Si spray, regardless if the leaves were washed or not before analysis. X-ray microanalysis revealed that Si deposition was very similar on the leaf epidermis of plants sprayed with soluble Si, root amended with soluble Si or grown in soil amended with calcium silicate. The lesion size, the number of lesions per cm² of leaf and the area under blast... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Pyricularia oryzae; Foliar disease; Mineral nutrition. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052013000300013 |
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| Cacique,Isaias Severino; Bispo,Wilka Messner Silva; Araujo,Leonardo; Aucique-Pérez,Carlos Eduardo; Rios,Jonas Alberto; Silva,Leandro Castro; Rodrigues,Fabrício Ávila. |
| ABSTRACT Mango wilt, caused by the fungus Ceratocystis fimbriata, is an important disease affecting mango production. In view of the beneficial effects of potassium (K) in other profitable crops and the lack of information about the effect of macronutrients on mango wilt development, the present study aimed to evaluate how mango plants supplied with K respond physiologically when infected by C. fimbriata. Mango plants (» 3 years old) from cultivar Ubá were grown in plastic pots containing 58 mg of K·dm−3 (original K level based on the chemical analysis of the substrate) or in plastic pots with substrate amended with a solution of 0.5 M potassium chloride (KCl) to achieve the rate of 240 mg K·dm−3. Disease symptoms were more pronounced in inoculated plants... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Mangifera indica; Gas exchange; Host defense; Mango wilt; Plant nutrition; Vascular disease. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000400521 |
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