Phenotipe and lignin content black rice mutant of gh 51 line

GH 51 is an essential derivative line from local Cempo Ireng black rice as a result of Universitas Sebelas Maret plant breeding programs. GH 51 line has better performance than Cempo Ireng, but it is not resistant to brown plant hoppers. To improve GH 51 line performance, preliminary research was conducted by irradiating GH 51 with 200 Gy gamma rays to obtain new genetic diversity. This study aims to observe the phenotype and lignin content of early flowering putative mutant in the M2 population. The results showed that the early flowering putative mutant of GH 51 black rice has a wide genetic variability on plant height, number of seed per panicles and weight of seed per plant whereas the characters of panicle length, stem diameter, number of panicles per clump, number of tillers and weight of 100 seeds have a narrow genetic variability. Lignin content of the putative mutant varies, and there are seven plants that can be selected for high lignin content, medium to high criteria of plant height, early flowering, and shorter harvesting time from mutant of GH 51 black rice.