ศูนย์นวัตกรรมเทคโนโลยีหลังการเก็บเกี่ยว

Genotypic variations in quality and shelf-life of fresh roots of Philippine sweet potato grown in two planting seasons.

Acedo, A. L., Jr.; Data, E. S.; Quevedo, M. A.;

Journal of the Science of Food and Agriculture Year: 1996 Vol: 72 Issue: 2 Pages: 209-212 Ref: 6 ref.

1996

บทคัดย่อ

Sweet potato (Ipomoea batatas) breeding in the Philippines has recently integrated root quality and shelf-life attributes in varietal development. In this study, the harvest and post-harvest quality of the fleshy roots of different sweet potato genotypes were determined. These genotypes included 4 existing recommended varieties and 5 elite selections from the polycross breeding nursery and were grown during the dry and wet planting seasons. Dry matter, starch, sugar and protein contents of freshly harvested roots differed widely with genotype. During storage at ambient temperatures, starch content decreased, sugar content increased and in some genotypes dry matter increased. Protein content of the stored roots varied only slightly from that of fresh roots. The different genotypes also differed in the degree of weight loss, shrivelling, decay and consequently, shelf-life. Some genotypes had short-lived roots (less than 1 month), while others had roots which were still marketable at the end of the

 3-month storage period. Root quality and shelf-life similarly varied with planting season. Some genotypes had increased dry matter, starch and sugar contents, and long shelf-life when planted in the dry season, while others had these characteristics when produced in the wet months. Protein content generally decreased in wet-season-produced roots. However, a number of genotypes had comparable root quality and shelf-life regardless of planting season.