Popping characteristics of sorghum genotypes (Sorghum bicolor (L.) Moench)
Golubinova, Irena (Institute of Forage Crops, Pleven (Bulgaria)) | Katova, Anelia (Institute of Forage Crops, Pleven (Bulgaria)) | Ilieva, Anna (Institute of Forage Crops, Pleven (Bulgaria)) | Marinov-Serafimov, Plamen (Institute of Forage Crops, Pleven (Bulgaria))
Twelve genotypes (varieties, hybrids, mutant and hybrid lines) of sorghum (Sorghum bicolor (L.) Moench) were studied. The objective of the study was to determine the popping performance and to establish the relationships with some biochemical parameters (content of crude proteins, starch, moisture) and grain characteristics (pericarp color, grain width, 1000-grain weight). Popping yield of sorghum grain genotypes was in range 32.0% - 72.0%. The highest influence on popping yield had 1000-grain weight (r = 0.831), starch content (r = -0.356), followed by moisture content (r = 0.212) and crude proteins (r = 0.282). It was found that the endosperm of the seeds expanded poorly in most genotypes with white coloring of the pericarp (from 33.3 to 90.1%), while for those with a dark-colored seed pericarp, the expansion was from 50.0% to 160.0%. Mutant line M1 (6282) (dark brown color of the pericarp) and hybrid line 1643 (white color of the pericarp) stood out with relatively better popping characteristics and particle size of popped grains. This study demonstrated one of the qualities of sorghum grain– poppability and opportunities for enrichment of the genetic diversity for the breeding program in this culture.
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