Growth performance of two superior line of local upland rice (Oryza sativa L.) from SE Sulawesi on the low light intensity

Rice (Oryza sativa L.) is the main staple food in Indonesia and the demand increase every year Many programs have been done to increase rice production. One of the promising programs to increase rice production is development upland rice that tolerant to shade. The study aimed was to characterize the new upland rice lines on shade condition. The research conducted at Field Laboratory, Faculty of Agriculture, Halu Oleo University. The research was design in a split plot design with four replications. The main factor was the level of shade that consisted of four levels i.e. N₀ = 0%, N₁ = 25-50%, N₂ = 50-75% and N₃ = 75-100%. The second factor was the subplot upland rice lines as subplot which consists of two lines, namely lines GS12-1 and GS16-1. The data were analyzed using ANOVA followed by Duncan Multiple Range Test (DMRT). The results showed that shade could increase plant height and leaf area. The shade treatment may decrease the number of leaves and number of tiller. While on the time flowering, the shade tends to prolong the time of flower.