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Evaluation of some biochemical factors for resistance of seven bread wheat (Triticum aestivum L.) genotypes to Russian aphid (Diuraphis noxia)
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Mohammad Mojtaba Kamelmanesh   , Mohammad Taghi Assad |
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Abstract: (3727 Views) |
| In order to evaluate the variation in wheat leaf total free phenol, total free amino acids, free proline and total protein in reaction to Russian aphid, an experiment was carried out on 7 bread wheat genotypes(with different levels of resistance). The experiment was performed in greenhouse conditions at Shiraz 1999. The results indicated that Russian aphid caused stress on all genotypes and total free phenol increased in all of them. High level of resistance in genotypes was correlated with free proline content before contamination (r=0.87,p<0.01). In resistant genotypes free proline accumulated rapidly after contamination.The results also signified that toxicity index value (ratio of total free phenol to total free amino acids) was correlated with resistance of plant to Russian aphid (r=0.73,p<0.05), therefore, resistant genotypes had higher values. According to the results, total protein of resistant genotypes was also higher than susceptible genotypes. On the other hand, contamination caused reduction in total protein content in all genotypes. |
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| Keywords: Bread wheat, Russian aphid, Phenol, Proline, Resistance. |
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Full-Text [PDF 154 kb]
(1409 Downloads)
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Type of Study: Scientific & Research |
Subject:
Special
Received: 2015/03/2 | Accepted: 2015/03/2 | Published: 2015/03/2
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