Investigating the Tolerance of Tomato (Lycopersicon esculentum) Cultivars to Broomrape (Orobanche aegyptiaca pers) in Khorassan Razavi

Abstract

To investigate the tolerance of tomato cultivars to Egyptian broomrape (Orobanche aegyptiaca pers.), an experiment was conducted in a randomized complete block design with 11 treatments and 3 replications in mazrae Nemoune Astan Quds Razavi in Mashhad, Iran, 2012. Treatment were 11 varieties (Peto early CH, Sterling (Karon), Khorram, Petorak, DNP 3005, PS 6515, SPEEDY, IDEN, VADI STAR, FIRINZEH and DNP 3001) which were transplanted in the field along with broomrape. Sampling was done at two stages: 1- after appearance and establishment of broomrape on tomato root where the dry weight, stem number and node numbers of broomrape on tomato root and tomato dry weight were measured and 2- at the end of growing season where tomato fruit weight and its yield were determined. Result indicated that Sterling and Khorram cultivars did have the least broomrape dry weight, stem number and node numbers of broomrape on tomato root and while produced highest plant dry weight, fruit and yield as compared to the other cultivars. Thus, may be considered as tolerant cultivars. Petorak and DNP 3001 on the other hand, presented the most broomrape dry weight, stem number and node number on tomato root. However, Petorak, Peto early CH and FIRINZEH cultivars produced the least plant weight, fruit and yield and thus, they can be called the sensitive cultivars. DNP 3001 being highly attacked by broomrape produced increased fruit yield and therefore compensated its ill effects.

Keywords

• Broomrape stem number
• Dry weight
• Tomato
• Tolerant cultivar