CHEMICAL ALTERATION AND SUSCEPTIBILITY TEST OF SOME TOMATO CULTIVARS INFECTED WITH ROOT-KNOT DISEASE | ||
| Mesopotamia Journal of Agriculture | ||
| Article 22, Volume 42, Issue 1, December 2014, Pages 225-230 PDF (0 K) | ||
| DOI: 10.33899/magrj.2014.89355 | ||
| Author | ||
| Abdul Rasool , A.M. | ||
| Plant Protection Dept. College of Agric. & Forestry ,Mosul University/Iraq | ||
| Abstract | ||
| The results showed increase in activity of the enzymes peroxidase , polyphenol oxidase and the total content of phenol in tomato cultivars infected with Meloidogyne javanica Raba'a cv. recorded significant superiority on the activity of peroxidase enzyme reached 0.74 Unit/g.fresh weight and total phenol content reached 6.69 mg/g. fresh weight compared with other cultivars. While it didn't differ significantly from Ward acv. In polyphenol oxidase activity reached 0.85 and 0.81 Unit/g. fresh weight in both cvs. respectively, This was reflected on number of gall/plant ,number of female/gram root and egg mass / gram root . It was noted that their values decreased with increasing of activity of peroxidase , polyphenoloxidase enzymes and total phenol content as observed in Raba'a cultivars which gave the lowest values reaching 15.3 , 18.6 and 5 for the same characters respectively. | ||
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