Abstract
Abstract Increasing national rice productivity can be achieved by optimizing existing resources, including rainfed rice fields in highlands areas. Rainfed rice fields in Indonesia are quite diverse in agroecosystem conditions, ranging from lowlands to highlands. Indonesia has the potential for highlands that can be planted with rice to support national rice production. The high variety of biophysical, edaphic, and biotic conditions of the main agroecological areas of rice cultivation makes it difficult to obtain varieties that can grow well in all types of agroecosystems. The purpose of this study is to determine the potential yield and adaptability of rice hope strains to anaerobic germination conditions in rainfed land and highland rainfed rice strains. Ten rice strains and two reference varieties from The Indonesian Centre for Rice Research Sukamandi in West Java were tested in 2021, with four repetitions. The area of each plot of 4 x 5 m was carried out on rainfed rice fields in Kerinci regency with an altitude of 788.5 meters above sea level and a Sungai Penuh regency of 795 meters above sea level. Observations were made of vegetative, generative parameters of plants, as well as temperature and humidity. Results showed that the strains with the highest production and medium harvest age had good observational agronomic parameters, namely in strains B15617E-4-MR-3, BP29337-2-CRB-0-SKI-0-7-PWK-1-SKI-3-3, and BP19980-JK-2-IND-2-SKI-0-PWK-1-SKI-5-1.
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