Characterization of Bread Wheat (Triticum aestivum L.) Genotypes through Chemical Tests

The investigation was undertaken at the Department of Seed Science and Technology, Junagadh Agricultural University, Junagadh, during rabi 2017-18 to characterize 30 bread wheat genotypes released for general cultivation in Gujarat at state level as well as at the National level in central India based on the chemical tests. The seeds were subjected to phenol, peroxidase, NaOH and KOH test for differentiating the genotypes. Based on the seed colouration with phenol, genotypes were grouped into dark brown (12 genotypes), light brown (11 genotypes) and brown (7 genotypes) in colour. Based on the colour of the solution due to peroxidase activity, genotypes were grouped into four categories viz., brown (15 genotypes), light brown (9 genotypes), no change (4 genotypes) and dark brown (2 genotypes) coloured types. The KOH and NaOH test did not differentiate any wheat genotypes studied.