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- Author or Editor: Kamolvan Suvanprakorn x
Abstract
Inheritance of resistance to Colletotrichum lagenarium (Pass.) Ell. & Halst. race 2 in watermelon (Citrullus lanatus (Thunb.) Matsum & Nakai) was determined in progeny from crosses between resistant plant introductions (PIs) 189225, 271778, and 326515 and susceptible cultivars ‘Charleston Gray’, ‘Jubilee’, ‘Crimson Sweet’ and AWB-10 advanced line. Parents and progenies were screened for resistance in field and greenhouse plantings. Resistance of F1 plants indicated resistance was dominant. The F2 plants segregated 3 resistant: 1 susceptible. The backcross of the F1 to the susceptible parent segregated 1:1. Resistance in all Pis tested was controlled by a single dominate gene pair.