Biomass and sugar productivity of brown midrib mutant sorghum lines resulting from gamma ray radiation mutation

Wijaya Indriatama; Trikoesoemaningtyas; Desta Wirnas; Sobir; Nana  Supriyatna; Soeranto Human

Authors

Wijaya Indriatama BRIN Author
Trikoesoemaningtyas Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia Author
Desta Wirnas Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia Author
Sobir Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia Author
Nana Supriyatna Research Center for Food Crops, National Research and Innovation Agency, Bogor, Indonesia Author
Soeranto Human Research Center for Food Crops, National Research and Innovation Agency, Bogor, Indonesia Author

Keywords:

BMR sorghum, soluble solids concentration, juice content and concentration

Abstract

Brown midrib (bmr) sorghum is a sorghum variety known for producing feed biomass and has a high sugar potential similar to that of sweet sorghum. This study assessed the productivity of several bmr mutant sorghum lines by measuring sugar and biomass yields during grain filling. The experiment was conducted using a randomized complete block design with three replicates. Twenty-two sorghum genotypes were tested: 20 bmr mutant lines, one wild type, and one control. Data were collected during the harvesting period and included fresh and dry stem and leaf biomass, total soluble solids, pH, juice weight, extraction capacity, sugar content, and sugar concentration. The results showed significant differences among the sorghum genotypes. SBC-26 had the highest total soluble solids (TSS) content (18.3%). SBC-29 had the highest juice weight and fresh biomass (106.5 g per stem and 705 g per plant). SBC-37 had the highest juice sugar content (54.7 g). SBC-42 had the highest juice sugar concentration (818 mg.g^-1). SBC-29, SBC-26, SBC-37, and SBC-42 should be further evaluated for biomass and sugar production.