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Genotypes x environment interaction studies on early blight disease of tomato

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Title Genotypes x environment interaction studies on early blight disease of tomato
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Creator A.K. Singh, N. Rai1, R.K. Singh, R.P. Singh and Vineeta Singh
 
Subject Tomato, Solanum lycopersicum, early blight, Alternaria solani, percent disease incidence (PDI), area under disease progress curve (AUDPC)
 
Description Not Available
Experiments were conducted for three years to study the interaction between tomato genotypes and environment against early blight disease caused by Alternaria solani. Fifty one genetically diverse genotypes of tomato were screened in fi eld conditions against early blight in Rabi season of 2006-09 at Indian Institute of Vegetable Research, Varanasi, India. Results revealed that genotype LA-3980 was resistant while, EC-520058, EC-520060, EC-520061, EC-520070, EC-521080, WIR-3928 and H-88-78-1 were highly resistant. All the resistant and highly resistant lines belong to wild species except H-88-78-1 and LA-3980. Only three genotypes, EC-520061, EC-520070 and H-88-78-1 were stable in each environment for resistance to early blight disease in tomato. Relationship of environment with resistant genotypes indicated that EC-520061, EC-520070, WIR-3928 and H-88-78-1 had low regression coeffi cient (b1) indicating stable and adaptive genotypic resistance to early blight. Hence these genotypes may be used as donor parent for development of early blight resistant/ tolerant varieties / lines.
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Date 2018-11-26T06:34:04Z
2018-11-26T06:34:04Z
2013-01-01
 
Type Research Paper
 
Identifier 3
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http://krishi.icar.gov.in/jspui/handle/123456789/13298
 
Language English
 
Relation Not Available;
 
Publisher Journal of Applied Horticulture