EVALUATION OF PURPLE FLESH SWEET POTATO GERMPLASM IN BANGLADESH CONDITION

The field trial was accomplished at the horticultural farm, Sher-e-Bangla Agricultural University, Dhaka, Bangladesh during October 2016 to march 2019 to evaluate the new purple flesh sweet potato germplasm on the basis of growth and yield performances. Purple flesh sweet potato vine was used in this study for three years field trial following out Randomized Complete Block Design. Leaf color is green when matured with light green young leaves, skin and flesh purple in color in case of visual observation. Data on growth and yield related parameters were taken. The skin and flesh color of sweet potato germplasm was accurate measured and exposed through L* (lightness), a* and b* (two Cartesian  coordinates) including C* and hab (Chroma & Hue angle) based on CIELab scale with standard observer 100 and standard illumination D65 using precision colorimeter IWAVE WF32. On the basis of growth performances across years, average vine length (95.5, 92.7, 97.3 cm) was observed and on the basis of yield performances, the average tuberous root yield per hectare was recorded (48.1, 48.2 and 50.4 t) respectively during 2016-17 to 2018-19 cropping season.