Effect of two methods of direct planting and transplanting on rate of dodder parasitizing of commercial tomato cultivars

Subject Areas : Journal of Plant Ecophysiology

Z.  Moradi ¹ (دانشجوی کارشناسی ارشد دانشگاه آزاد اسلامی واحد شیراز)
M.  Madandost ² (استادیار دانشگاه آزاد اسلامی واحد فسا)
F.  Sadeghi ³ (استادیار دانشگاه آزاد اسلامی واحد شیراز)

Received: 2014-11-03 Accepted : 2014-11-03 Published : 2014-11-01

Keywords: Cultivar, Dodder, parasitizing, fruit yield, direct planting, Tomato,

Abstract :

In tomato, parasite plants such as dodder that is a stem parasite has a major effect on yield. To control and keep the host from their harmful effects it is needed to use selective herbicides. Therefore other control methods are needed. In order to evaluate the effects of transplanting and direct planting methods of tomato cultivars on dodder (Cuscuta sp) parasitizing, a greenhouse experiment was conducted at Islamic Azad University of Shiraz, in 2012. The experiment was based on a randomized complete design (RCD) with factorial arrangement with three replications. The first factor was tomato cultivars (Falat CH, Petoldoli and Fk) and the second factor was different methods of planting (direct and transplant). Analysis of variance showed significant differences among cultivars for plant height, fruit yield and root fresh weight. The highest and lowest fruit yields were obtained from Falat Ch (40.82 g) and Petoldoli (24.41 g), respectively. In relation to the effect of planting methods, the results showed that plant height, fruit yield and diameter and fresh and dry weights of tomato were higher in direct planting method than transplanting while dry weight of dodder was higher in transplanting method. The results also showed that reduction in tomato Falat CH yield was higher than Petoldoli and Fk and this cultivar was more resistant to be parasitized by dodder.