EVALUATION OF INDIAN POTATO (SOLANUM TUBEROSUM L.) GERMPLASMS AGAINST COMMON SCAB CAUSED BY STREPTOMYCES SCABIES
Journal Title: International Journal of Agriculture Sciences - Year 2016, Vol 8, Issue 19
Abstract
Potato (Solanum tuberosum L.) is an important non-cereal crop all over the world and is remarkably recommended for ensuring global food security. Potato being a vegetatively propagated crop provides an ample opportunity for the pathogen to perpetuate from one generation to another through tubers and because of its succulence; it prevents desiccation of the pathogens. Among many diseases, common scab caused by Streptomyces scabies is a serious disease in India where the yield loss on account of the disease is not much but it drastically reduces the market value of the produce due to inferior quality. In the present investigation, a set of fifteen germplasms of potato was screened against common scab caused by S. scabies under natural and controlled conditions during 2012-13 to locate sources of resistance. As a result, out of fifteen germplasms/cultivars of potato screened against common scab, none of the germplasm was proven to be resistant to common scab. Whereas, four potato germplasms were categorized as moderately resistant; three genotypes were categorized as moderately susceptible; six potato germplasms were proven to be susceptible and two genotypes were found to be highly susceptible to common scab caused by S. scabies. Use of resistant cultivars for the management of common scab disease of potato is the best and most economic method. Hence, moderately resistant germplasms like MF-1, MS/95-1307, DSP-287 and Kufri Sutlaj should be cultivated to deal with the common scab of potato.
Authors and Affiliations
DARSHAN DHARAJIYA
Keywords
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