Characteristic of panicle in M4 red rice mutants

Abstract

The need for rice is always increasing every year in line with population growth making rice commodities have a very important role. Red rice which has been known for a long time, needs to be given priority in research to overcome the problem of food and nutrition shortages. Rice panicle, a crucial organ that has economic values, is an important yield component to improve. This study aimed to obtain information on relationship within the panicle characters on rice production. The experiment was conducted within 6 month using 10 red rice mutant lines M4 and 2 non-mutant lines as controls. Data from yield components used were number of grains per panicle, panicle density, percentage of filled grain per panicle, grain length, grain width, and grain thick. Based on the results of the path analysis on these characters, it is known that four characters that have a total positive and significant direct effect on the weight of grain per panicle were the number of grains per panicle, panicle density, panicle length and percentage of filled grain per panicle. Hence, these characters are important and effective to be used as a selection component in increasing grain production in red rice plants. Tests of several M4 generation red rice mutants based on grain characterization show very significant differences in grain length and grain width characters. The longest grain is GK2 strain (10.33 mm) and the widest grain is G9 strain (3.29 mm).