Document Type : Research Paper

Authors

• Dariush Ramezan ¹
• Azam Hassanpour Asil ²
• Reza Salehi ³
• Hossein Dehghanisanij ⁴

¹ Ph.D. Student of Physiology and Breeding Vegetable, Department of Horticulture, Faculty of Agriculture Sciences, University of Guilan, Rasht - Iran

² Professor, Department of Horticultural Sciences, Faculty of Agricultural Sciences, University of Guilan, Rasht - Iran

³ Assistant Professor, Department of Horticulture, Faculty of Agriculture, University of Tehran, Karaj - Iran

⁴ Associate Professor, Agricultural Engineering Research Institute (AERI), Karaj - Iran

Abstract

The effects of grafting under conditions of deficit irrigation, on content of minerals leaf and root, evalutate in a field experiment under deficit irrigation was conducted with Split plot in a randomized complete block design with three replications, in the research field of higher education institution Imam Khomeini (RA) under the Ministry of Agriculture in Karaj, during 2014. In this study, a landrace melon from Inodorus group (Zard-e-Jalali) as the scion and commercial varieties of Cucurbita rootstocks cv., ‘Shintozwa’and ‘Ferro-RZ’was used as the rootstock. Grafted melons upon commercial varieties of Cucurbita with own-rooted and ungrafted at three irrigation levels 60, 80 and 100 percent based on total available water depletion with drip irrigation system were evaluated. Comparison of means showed that maximum (40.76 ton.ha^-1) and minimum (31.16 ton.ha^-1) total yield, related to ‘Shintozwa’rootstock and self grafted respectively. The results showed that the irrigation levels and rootstocks had a significant effect (P <0.01) on Leaf and root mineral concentration. Also, content of minerals of leaves and roots decreased with increasing water stress. There was not significant difference in the level of 5 percent, in relation to total nitrogen of leaf between ‘Shintozwa’and ‘Ferro-RZ’rootstocks.The comparison of means showed highest (2.97 percent on a dry matter basis) and the lowest leaf total nitrogen (2.23 percent on a dry basis), respectively, in plants that grafted on ‘Shintozwa’and own rooted. The percent increase in leaves mineral elements, contain nitrogen, phosphorus, potassium and zinc in Zard-e-Jalali grafted upon ‘Shintozwa’ rootstock in compared to ungrafted plants was 26.92, 13.15, 17.88 and 15.76 percent, respectively.

Keywords

• Cucurbita rootstocks
• Ferro-RZ
• Grafting
• leaf nitrogen
• Shintozwa

20.1001.1.83372008.1395.18.2.11.2