Variability of tobacco mosaic virus in relation to control of tomato mosaic in glasshouse tomato crops by resistance breeding and cross protection

摘要: Various strains of TMV occur in susceptible crops tomato. This variability is importance to resistance breeding and cross protection as alternative methods control. Strains differ the kind symptoms expressed extent host range. Symptom variation allows for distinction eight which tomato strain most important. On a range including Solanum pennellii, Lycopersicon esculentum CStMW-18 L.peruvianum four are differentiated correspond with Pelham's 0, 1, 2 . also longevity vitro. The prevailing Strain 0 1 an more persistent than 2. instability shown by during isolation suggests that practice it may not easily overcome gene Tm-2 symptomless nitrous acid mutant MII-16 discussed relation less its parent strain. necessitated careful preparation inocula commercial use.