Genetic diversity of panicle morphological traits of rice (Oryza sativa L.)

The variability of rice genotypes is a source of germplasm for rice breeding. As one of the major organs related to yield components in rice, panicle architecture is an important part to be studied, while the information is still limited. The study aimed to obtain information on the diversity of rice genotypes on the panicle character and investigate their relationship within the panicle characters. The experiment was conducted during two seasons using 100 rice genotypes. The analysis of variance showed that genotypes and seasons are significantly different. The character of length of first grain from first node and the number of primary branches increased during the rainy season (rainy season 2015/2016). The performance of panicle traits had been influenced by environment factors regarding to quantitative traits which encoded by multiple genes.