Mapping QTLs for Black pod (Phytophthora palmivora) resistance in three hybrid progenies of cocoa (Theobroma cacao L.) using SSR markers

IJSRP, Volume 6, Issue 1, January 2016 Edition [ISSN 2250-3153]

Mapping QTLs for Black pod (Phytophthora palmivora) resistance in three hybrid progenies of cocoa (Theobroma cacao L.) using SSR markers

AKAZA Moroh Joseph, KOUASSI Abou Bakari, AKAFFOU Doffou Sélastique, FOUET Olivier, N’GUETTA Assanvo Simon-Pièrre and LANAUD Claire

Abstract: To identify QTLs for cacao resistance to Phytopthora palmivora., a study was conducted in three hybrid progenies of CNRA in Côte d'Ivoire obtained from crosses (SCA6 x H) x C1, (P7 x ICS100) x C1 and (P7 x ICS95 x) x C1. SCA6 (Scavina 6) and P7 (Pound 7) are resistant Forastero clones, while ICS100, ICS95 and H are moderately susceptible Trinitario clones and C1 (IFC1), a susceptible Forastero clone. Resistance to P. palmivora was assessed by means of pod rot rate (PRR) in field and leaf discs inoculation with zoospores (Folres) in both half-sib progenies, while only PRR was investigated in the progeny derived from (SCA6 x H) x C1.

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AKAZA Moroh Joseph, KOUASSI Abou Bakari, AKAFFOU Doffou Sélastique, FOUET Olivier, N’GUETTA Assanvo Simon-Pièrre and LANAUD Claire (2018); Mapping QTLs for Black pod (Phytophthora palmivora) resistance in three hybrid progenies of cocoa (Theobroma cacao L.) using SSR markers; Int J Sci Res Publ 6(1) (ISSN: 2250-3153). http://www.ijsrp.org/research-paper-0116.php?rp=P495003