Abstract
SummaryConsumers, traders and processors consider post‐harvest physiological deterioration (PPD) an important constraint. In Experiment 1, PPD was assessed three consecutive years in roots from five genotypes through seven storage days. PPD, scopoletin and dry matter content (DMC) was recorded during storage. Year, genotype, duration of storage and their interactions were significant. PPD was associated with duration of storage period, DMC and scopoletin contents. Ambient moisture and temperature during storage influenced PPD. In Experiment 2, roots from seven clones were harvested 10 months after planting from 30 consecutive biweekly plantings. PPD was assessed 0, 2 and 7 days after harvest. In 13 harvests, roots from plants pruned six days earlier were also evaluated. Results indicated large seasonal variation across genotypes. Pruning reduced PPD and DMC. Complex and contrasting relationships among the variables analysed were found. There is no uniform model explaining the relationship between PPD and the independent variables considered.
Highlights
Cassava (Manihot esculenta Crantz) is an important food security crop for millions of people, in Sub-Saharan Africa
post-harvest physiological deterioration (PPD) was associated with duration of storage period, dry matter content (DMC) and scopoletin contents
The present study focuses on PPD, DMC and scopoletin in cassava roots from several genotypes
Summary
Cassava (Manihot esculenta Crantz) is an important food security crop for millions of people, in Sub-Saharan Africa. It is an important industrial crop reliably providing raw material for the starch, animal feed and ethanol industries. Several factors affect the ability of cassava to satisfy new and increasing demands. One of them is post-harvest physiological deterioration (PPD) in the roots (Djabou et al, 2017; Liu et al, 2017; Zainuddin et al, 2018). PPD rapidly renders the roots unpalatable and unmarketable few days after harvest. Cassava roots need to be consumed soon after harvest unless they are preserved in some manner (van Oirschot et al, 2000)
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