Response of inter-specific crosses under field and
glasshouse conditions against Tomato leaf curl virus disease (ToLCVD) in
tomato
RK Singh, N
Rai, AK Singh, Prashant Kumar, Rashmi Singh
Division of Crop Improvement & Biotechnology,
ICAR-Indian Institute of Vegetable Research (ICAR-IIVR), P.O.-Jakhini
(Shahanshahpur), Varanasi
Received: 12 March 2017 Revised
Accepted: 15 May 2017
ABSTRACT
In present study
twenty four inter-specific crosses developed by crossing four susceptible and six
resistant species in line x
tester mating design. These crosses and their parents
were evaluated in field and glasshouse of ICAR-Indian Institute of Vegetable
Research, Varanasi, U.P., and India. The objective of study was to study the
genetic nature of inter-specific crosses for resistance to Tomato leaf curl virus disease (ToLCVD) and yield traits under
different environmental (field and glasshouse) conditions. In this study it
was manifested that the disease pressure was more in glasshouse than field
conditions due to high viral pressure by whiteflies. The performance of yield
traits were good in field conditions. It was also found that the cross
combination of EC-520061 were resistant for ToLCVD under both field and glass
house environment. Whereas, the crosses of EC-521080, EC-528372, WIR-5032 and
EC-528372 were better yield potential. These crosses can be utilized and
advanced for development of resistant varieties to ToLCV disease and high
yield.
Key
Words: Eco-horticultural traits, Field
and glasshouse conditions, Heterosis breeding, Inter-specific crosses,
Resistant to ToLCV, Wild spp.