GROWTH AND YIELD PERFORMANCE OF MICRO PROPAGATED POTATO (Solanum tuberosum L.) GERMPLASM UNDER FIELD CONDITION

Abstract

A field experiment with 19 micro-propagated potato (Solanum tuberosum L.) germplasm collected from different sources was conducted at Sher-e-Bangla Agricultural University, Dhaka during 01 December 2015 to March 2016 to study the growth and yield performance of the germplasm. The tested 19 germplasm were G1, G2, G3, G4, G5, G6, G7, G8, G9, G10, G11, G12, G13, G14, G15, G16, G17, G18 and G19. The experiment was laid out in Randomized Complete Block Design with three replications. All the germplasm differed significantly with regard to plant height leaves plant-1, leaf chlorophyll content (SPAD value), plantlets plant-1, tubers plant-1, individual tuber weight, tuber yield plant-1, tuber yield plot-1 (plot area:12 m2) and tuber yield ha-1. Maximum number of small sized tuber was produced by G5 (149.0) followed by G12 (137.0), G6 (85.0), G8 (50.0), G13 (50.0) and G16 (50.0) while maximum number of medium sized tuber was recorded in G5 (20), G12 (15.0), G6 (13.0) and G16 (13.0). The germplasm G7 recorded the highest number of large sized tuber (13.0) which was followed by G6 (12.0). The highest plant height was found from G7 (55.0) closely followed by G19 (53.00 cm), G11 (49.67 cm) and G4 (51.33 cm) and the lowest from G1 (28.00 cm). G19 recorded the maximum number of leaves plant-1 (32.67) which was statistically similar to G15 and G6. Maximum chlorophyll content (SPAD value) was recorded from G15 closely followed by G19 and its minimum value from G14. G5 gave the maximum number of plantlets plant-1. Maximum individual tuber weight was obtained from G14 and the minimum from G17. G12 produced the highest tuber yield plant-1 (283.67 g) which was statistically similar to G8 (283.00 g), G19 (280.94 g), G6 (257.67 g) and G14 (253.00 g). Positive correlation of yield was observed with leaves plant-1, plantlets plant-1, tubers plant-1, individual tuber weight and tuber yield plant-1. The maximum tuber yield was produced by G8 (2.73 kg plot-1 and 39.05 t ha-1) closely followed by G12 (2.70 kg plot-1 and 38.52 t ha-1) and G19 (2.67 kg plot-1 and 38.14 t ha-1).