A review of breeding work on disease resistance of cocoa in Nigeria

Although breeding activities on cacao started in Nigeria in 1912, deliberate genetic manipulation of the crop started in 1931 while breeding for disease resistance was not embarked on until about 27 years later. Since then, disease resistance has featured as an integral part of all the cocoa breeding programme phases to date. The most economically significant diseases of cacao in Nigeria in order of importance have been those caused by fungi of the Phytophthora species, the Cocoa Swollen Shoot Virus (CSSV) and nematodes. The most prevalent fungal disease is the black pod rot which over 25 cacao genotypes have been selected as either tolerant/resistant or 'escapes'. Similarly, 20 and five genotypes have been selected as either tolerant/resistant to the virus and nematode disease, respectively.

Bibliographic Details

Main Authors:	45590 Badaru, K., 65268 Esan, E.B., 131603 Williams, J.A., 36020 International Workshop on the Contribution of Disease Resistance to Cocoa Variety Improvement Salvador, BA (Brasil) 24-26 Nov 1996
Format:	biblioteca
Published:	Reading (RU) INGENIC 1999
Subjects:	THEOBROMA CACAO, PHYTOPHTHORA PALMIVORA, RESISTENCIA A LA ENFERMEDAD, ENFERMEDADES FUNGOSAS, FITOMEJORAMIENTO, COCOA SWOLLEN SHOOT VIRUS, NEMATODOS DE LAS PLANTAS, NIGERIA,
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