Yield potential test of promising lines of red and black rice in dryland of low altitude in Central Lombok, Indonesia

Abstract

Red and black rice are important functional food ingredients because of their high anthocyanin content, which is very beneficial for health. One of the steps to produce new superior varieties of rice is the implementation of field yield testing. The purpose of this activity was to examine yield potential of ideal types of red rice and black rice in upland growing environment of low altitudes. The field test was carried out from April to August 2021 in Central Lombok, at altitude of 100 m above sea level, which was designed using a Randomized Block Design with 15 treatments, namely 5 lines of ideal type red rice resulted from F5 Pedigree selection, 5 lines of black rice resulted from F10 bulk selection of F4 Pedigre, and 4 parents (“F2BC4P19-36” promising line of red rice, “Baas Selem”, “Situ Patenggang” and “Inpago Unram 1” varieties), all of which were made in three replications (blocks). Observation variables included plant height, days to flowering and harvest, number of productive and non-productive tillers, panicle length, number of filled and unfilled grains per panicle, weight of 100 grains, grain yield per clump and potential yield of tons/ha. The results showed that potential yield of the red rice line G6 (F5IPB3S/F2BC4P19-63//Fat/F2BC4P19-63-PD3/83 (5.14 t/ha) and black rice line G10F91/1/6/P3 (5.29 t/ha) were lower than the comparison variety “Inpago Unram 1” (7.58 t/ha) but did not differ from its parents, namely red rice “GH F2BC4P19-36” (5.49 t/ha), “Baas Selem” (4.83 t/ha) and “Situ Patenggang” (4.89 t/ha).