MORPHOPHYSIOLOGICAL ANALYSIS OF FIFTEEN SWEET POTATO GERMPLASM

Abstract

A field experiment was performed to study morphophysiological analysis and yield of fifteen sweet potato germplasm at the Horticulture Farm, Sher-e-Bangla Agricultural University, Sher-e-Bangla Nagar, Dhaka-1207, Bangladesh. The duration of this field research was from September 2018 to March 2019. The experiment was laid out in the Randomized Complete Block Design (RCBD) with three replications were done. The fifteen sweet potato germplasm (Germplasm 1: G 1 , Germplasm 2: G 2 , Germplasm 3: G 3 , Germplasm 4: G 4 , Germplasm 5: G 5 , Germplasm 6: G 6 , Germplasm 7: G 7 , Germplasm 8: G 8 , Germplasm 9: G 9 , Germplasm 10: G 10 , Germplasm 11: G 11 , Germplasm 12: G 12 , Germplasm 13: G 13 , Germplasm 14: G 14 , Germplasm 15: G 15 ) were used as the treatments of the study. Different vegetative growth, reproductive growth and yield related parameters were studied. On the basis of the directions of the Union for the Protection of Plant Varieties (UPOV), these fifteen sweet potato germplasm were classified according to their morphological differences. The germplasm G 4

showed the highest value (7.300) for the number of tuberous roots/plants. But the highest value for weight of a single root (157.4 g), tuberous root yield/plant (1091.0 g) and tuberous root yield/ha (60.60 t/ha) were observed in G 7 . So, the results exposed that, the yield related characteristics were better in the germplasm 7 (G 7 ). In addition, statistically identical result was also found in case of tuberous root yield/ha in G 3 (59.07 t/ha). Furthermore, the germplasm G 1 , G 2 , G 3 , G 5 , G 6 , G 9 , G 10 , G 11 , G 13 , G 14 and G 15 can be utilized to have food grade color, industrial dye, etc