Penapisan Cekaman Salinitas Beberapa Varietas Padi Gogo (Oriza sativa L.) pada Karakter Agronomi

Abstract

This research aims to determine the effect of salinity on the growth of upland rice plants. This research was conducted in Medan Selayang, Medan City, Medan Selayang District, Medan from November 2022 to February 2023. This research used a factorial Randomized Group Design (RAK) method using 2 factors. The first factor is Salinity Concentration (S): S0 (0%), S1 (1.5 dS/m), S2 (3 dS/m), S3 (4.5 dS/m). The second factor is the number of varieties (P): P1 (Situbagendit), P2 (Inpago 12), P3 (Inpago 13). The variables observed were flowering age, plant height, leaf area, root length, root volume, number of tillers, root fresh weight, stress tolerance index. The results showed that the variety treatment had a significant effect on reducing plant height by 8 MSP, the number of tillers by 4 MSP, root volume and root fresh weight, and the superior sensitivity index on the Inpago 13 variety. The salinity treatment had a significant effect on reducing flowering age, plant height, leaf area, number of tillers, root length, root volume and root fresh weight. The interaction between salinity and variety had a significant effect on reducing plant height at 2 and 8 MSP, leaf area at 4-6 MSP, number of tillers at 2 MSP, root volume and root wet weight. The sensitivity index shows that the Inpago 13 variety is the most tolerant and the Situbagendit variety has the highest sensitivity