title: Differential resistances to anthracnose in Capsicum baccatum as responding to two Colletotrichum pathotypes and inoculation methods.
abstract: Chili anthracnose, caused by Colletotrichum spp., is one of the major diseases to chili production in the tropics and subtropics worldwide. Breeding for durable anthracnose resistance requires a good understanding of the resistance mechanisms to different pathotypes and inoculation methods. This study aimed to investigate the inheritances of differential resistances as responding to two different Colletotrichum pathotypes, PCa2 and PCa3 and as by two different inoculation methods, microinjection (MI) and high pressure spray (HP). Detached ripe fruit of Capsicum baccatum 'PBC80' derived F2 and BC1s populations was assessed for anthracnose resistance. Two dominant genes were identified responsible for the differential resistance to anthracnose. One was responsible for the resistance to PCa2 and PCa3 by MI and the other was responsible for the resistance to PCa3 by HP. The two genes were linked with 16.7 cM distance.
authors.affiliation: Center for Agricultural Biotechnology, Kasetsart University , Kamphaeng Saen Campus, Nakhon Pathom 73140 Thailand ; Center of Excellence on Agricultural Biotechnology: (AG-BIO/PERDO-CHE) , Bangkok 10900 Thailand.
authors.forename: Pitchayapa
authors.initials: P
authors.lastname: Mahasuk
authors.forename: Jittima
authors.initials: J
authors.lastname: Chinthaisong
authors.forename: Orarat
authors.initials: O
authors.lastname: Mongkolporn
keywords: Colletotrichum acutatum; high pressure spray; hypersensitivity; microinjection