Evaluation of the distinct and uniformity of upland rice superior varieties candidates

Abstract

Rice production needs to be increased by using new superior varieties of upland rice. Currently, 5 promising lines of upland rice have been produced through plant breeding programs. Before being registered as a variety, plant variety canadidates must have distinct and uniform criteria. This research was conducted to determine distinctiveness, uniformity and recommendations for 5 promising lines as candidates for upland rice of new superior varieties. This research was conducted from August 2022 to March 2023 at the Experimental and Research Station, Universitas Bangka Belitung. The research material consists of 5 F8 lines and 5 comparison varieties. Data analysis used the Analysis of Variance (ANOVA) followed by the Duncan Multiple Range Test (DMRT) and uniformity test. The results of ANOVA test showed were significant differences in the characters of plant height, flag leaf length, panicle length, filled grain weight per clump, and 1000 grain weight. The promising lines show distinct characteristics of seed color, plant height, number of productive tillers, and panicle length. Narrow variability values indicate a high level of uniformity with the expected lines of uniformity ranging from 88-100%. Lines 23A-56-22-20-05 (brown rice) and 23A-56-20-07-20 (white rice) with high production are recommended as candidates for new superior varieties of upland rice.