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Cassava root rot disease is an increasing problem in Africa where yield losses of about 80% have been recorded. We evaluated 290 African landraces and 306 improved genotypes from the germplasm collections of the International Institute of Tropical Agriculture (IITA), for sources of resistance usi...
Ten Cassava (Manihot esculenta, Crantz) genotypes were assessed for phenotypic fresh tuber yield stability for 2 years in nine locations in three West African countries (Nigeria, Ghana and Benin). From a combined analysis of variance for fresh yield, all main effects were significant. First order...
Three traits, namely root number (RTNO), root weight(RTWT) and fresh yield (FYLD) of some cassava genotypes wrer scored and analysed for heritability. The genotypes differed significantly for each of the tree traits. Generally heritability per replicate was above 50% indicating that the additive ...
En matiere d'ameliotation genetique du nie-be, il est rare de trouver un plant ou une variete posse-dant taus les caracteres desires. La tecombinaison des catacteres desires, II partir de sources parentales dis-tinctes, s'obtient en croisant les plants et en effectuant les pollinisations croisees...
Common beans are a warm-season, food legume cultivated in areas prone to water limitation throughout their growing season. This study assessed the magnitude and pattern of trait associations for a total of 202 common bean genotypes divided into panels of 81 Andean and 121 Mesoamerican gene pool a...
Discusses the genetic aspects of criteria of trypanotolerance including parasitaemia, anaemia control and immune response. Includes data on heritability estimates for daily liveweight change, for PCV under low & high trypanosome prevalence, and for number of treatments required in four periods af...
Cassava is, economically, one of the most important root and tuber crops in Africa. However, its production is compromised by a large number of diseases and pests among which the african root and tuber scale (Stictococcus vayssierei Richard). This insect causes damage that can result in a low yie...
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