apa 2016 sweetpotato potato ethiopia photosynthates yield tuber yield potatoes keynote addis ababa geometric mean storage root initiation harvest index stress susceptibility index yield stability bangladesh cip-bred potato clone salt tolerance biomass plant morphology sprouting gibberellic acid dormancy breaking skills-building sweetpotato vine multiplication specialisation animal feed uganda vines kisima farm ltd smallholder farmers kenya determinants of use quality seed potato dry season planting material triple s ler maize partial equivalence intercropping rapid multiplication nutrient concentration aeroponics mini-tuber net tunnel clean planting material negative selection households preferences factors consumption perceived barriers women malnutrition adoption apa 2016 ofsp children iron recurrent selection zinc micronutrient malnutrition xrf genetic gains stability cloneselector maturity group cultivars discriminant analysis ammi participatory varietal selection on-farm demonstration orange-fleshed sweetpotato variety traits agro-ecological zones growing seasons gender glycoalkaloid concentrations heritability heat tolerance late blight resistance phytophthora infestans gm potatoes demese chnayalew climate change breeding poverty sweet potato sweetpotatoes nutrition food security
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