Use of phenols, peroxidase and polyphenoloxidase of seed to quantify resistance of cotton genotypes to damping-off incited by Fusarium oxysporum

Автор: Mohamed Heba I., Aly Aly A., Omar Moawad R.

Журнал: Журнал стресс-физиологии и биохимии @jspb

Статья в выпуске: 1 т.10, 2014 года.

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A greenhouse test was conducted in 2011 and 2012 growing seasons at Giza Agricultural Research Station to evaluate the reaction of six cotton genotypes to damping-off incited by Fusarium oxysporum. Damping-off incidence on the genotypes ranged from 70-88%. In general, the genotypes could be divided into highly susceptible, susceptible, and moderately susceptible. Data for damping-off incidence and level or activity of some biochemical components (phenols, peroxidase, and polyphenoloxidase) were entered into a computerized linear regression analysis. The analysis contrasted seven predictive models by using the biochemical components, singly or in combination, as biochemical predictors. It was evident that models nos. 2 and 6 were the best models for predicting incidence of damping-off. The superiority of these models was attributed to their high R² values (0.748 and 0.902, respectively) and the significance of their F. values (P = 0.026 and P = 0.031, respectively). The results of the present study suggest that peroxidase alone or both peroxidase and polyphenoloxidase, which may or may not parts of damping-off resistance mechanisms, can be used as biochemical markers to predict resistance to damping-off incited by F. oxysporum.

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Fusarium oxysporum, gossypium barbadense, peroxidase, phenol, polyphenol oxidase

Короткий адрес: https://sciup.org/14323845

IDR: 14323845

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