Genotype x environment interaction effects on native cassava starch quality and potential for starch use in the commercial sector
2004
Benesi, I.R.M. | Labuschagne, Maryke T. | Dixon, A. | Mahungu, N.M.
Cassava (Manihot esculenta Crantz) is the second most important staple food crop in sub-Saharan Africa, providing up to 285 calories per person per day. Cassava starch is a potentially important industrial material in Malawi. Industries hesitate to use cassava starch because the powder sold by some suppliers has been grossly inadequate. This study was conducted to evaluate native cassava starch qualities for different Malawi cassava genotypes, determine the appropriate stability parameter to deal with GxE for starch quality traits, and potential for use of cassava starch by the main industries in Malawi. Trials were conducted in Malawi to examine starch quality parameters, root dry mater and starch extraction. Based on the results, the moisture and ash content were much lower than the recommended allowable maximum. The pH for cassava starch was within the recommended range. Additive main effects and multiplicative interaction (AMMI) were strongly correlated with other stability parameters such as Wi-covalence and stability variance–no covariate. From the results, genotype has a greater influence on root dry matter than the environment. Native cassava starch can be used in the pharmaceutical, battery and packaging material making and textile industries in Malawi.
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