PERFORMANCE OF AGRONOMIC CHARACTERISTICS AND PATH ANALYSIS OF THE UPLAND NEW PLANT TYPES OF RICE YUSUF L. LIMBONGAN, DRIYUNITHA, TRISDAY YIIN PARARI, RINALDI SJAHRIL, MUH. RIADI
Indonesia Christian University of Toraja
Abstract
A small proportion of paddy fields in Indonesia are in the highlands and so far the assembling of new superior varieties has rarely been aimed at that environment, therefore the assembling of upland new plant types of rice is important. This study aims to examine the good production characteristics and path analyses as well as the character correlation of the highland F4 new plant type of lines. The research was conducted in four paddy fields, namely Bittuang, Rantebua, Sesean, and Tallunglipu sub-districts at altitudes of 650, 850, 1400 and 1600 meters above sea level (m asl) in North Toraja and Tana Toraja Regencies. This research took place from 2021 to December 2021. This study was arranged in a single factor randomized block design pattern at each location. The genotypes tested were 30 expected F4 lines and six control varieties which were repeated 3 times at each location. The results of the observations were analyzed for combined variance followed by the 0.05 least significance difference (LSD) test and heritability analysis. Correlation values between characters were tested for correlation and path analysis. The results showed that lines with an average productivity of above 4 tons ha-1 at four locations namely G13 (5.17 tons ha-1), G7 (4.91 tons ha-1), G26 (4.80 tons ha-1), G15 (4.65 tons ha-1) , G10 (4.55 tons ha-1), G14 (4.47 tons ha-1), and G25 (4.22 tons ha-1). The characters with the highest correlation to increased production were the weight of filled grain per clump (0.984), the number of productive tillers (0.772), and the weight of grain per panicle (0.601), while the characters that had the highest positive direct effect were the number of productive tillers 0.723, the weight of good grain per panicle (0.519) and the percentage of filled grain per panicle (0.472).
