OAR@ICRISATIdentification of a double recessive genotype for 'B' genes controlling presence and absence of pigmented testa in sorghumBNathauthorA OOmranauthorL RHouseauthorThe dominant complementary genes B1 and B2, in combination with a spreader gene, S, produce grains with a brown testa and undesirable high tannin content. Thirteen white-grained cytoplasmically male-sterile lines without a pigmented testa were crossed with 2 white-grained testers, IS475 (B1B1 b2b2 SS) and BTx623 (b1b1 B2B2 SS). On the basis of grain colour of F1 plants, 12 of the lines were of genotype b1b1 B2B2 and one (SPL76A) was b1b1 b2b2. SPL76A is considered useful as a seed parent for developing tannin-free hybrids in combination with white-grained restorers of any originSorghumGenetics and Genomics1985Cereal Research Non-Profit CompanyArticle

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