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International Journal of Agricultural Research
Year: 2009  |  Volume: 4  |  Issue: 11  |  Page No.: 362 - 369

The Role of Grafting Tomato and Watermelon on Different Rootstocks on Their Chemical Contents

S.M.T. Mohammed, M. Humidan, M. Boras and O.A. Abdalla    

Abstract: The objective of this study was to determine the impact of interaction between rootstocks and scions of watermelon and tomato on the chemical contents of their leaves and roots. The rootstock of local Syrian tomato produced the highest amount of total lipids, total fatty acids percentage and total unsaponated percentage of total lipids in root (0.69, 92.39, 3.34%) and leaf (0.73, 91.54, 4.02%) compared to Beaufort rootstock and He-man rootstock when grafted with Cecilia scion. With regard to watermelon grafts Samara on C. pepo excelled the two other watermelon grafts namely, Samara on Tetsukauto and Samara on Lagenaria siceria in its overall root contents of total fatty acids percentage of total lipids and total unsaponated percentage of total lipids. Samara on C. pepo excelled the other two watermelon grafts with regards to its significant leaves (0.1326, 18.73%) and root contents (0.1214, 15.33%) of phospholipids percentage and total unsaponoted phospholipids, respectively. Grafting increased indole-3-acetic acid (IAA) in seedlings of both tomato and watermelon. Cecilia on Beaufort (32.43 nm g-1) and Cecilia on Syria (36.71 nm g-1) had significantly greater contents of Indole-3-acetic acid in their roots whereas, only Samara on C. pepo watermelon grafts (98.27 nm g-1) had significant greater contents of IAA in its roots. Clear effects of grafting watermelon and tomato on their lipids and IAA contents were concluded in this study.

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