| Mutants for leaf character ip hexaploid triticale V.R.K. REDDY and P.K. GUPTA Department of Agricultural Botany, Institute of Advanced Studies, Meerut University, Meerut, India Triticale (x Triticosecale Wittmack), a well known amphiploid, is the product hybridization between species of genera Triticum and Secale. Triticales, relatively have a unstable genomic condition, therefore, through induced mutagenesis, the genetic architecture of triticales can be tailored to develop new and better types. It is also true that high ploidy of triticales provide an opportunity to get large spectrum and high frequency of both micro and macro-mutations. To date very few reports are available on induced mutations in triticale breeding. In our study (REDDY 1985) a large number of morphological mutants were obtained, in this communication mutants based on leaf characters were described. Materials and Methods Four hexaploid triticale varieties, Beagle, Coorong, TL 419, and Welsh were used in the present study. One physical mutagen, gamma rays (100 Gy, 200 Gy, 300 Gy) and are chemical mutagen, Ethyl methane sulphonate (0.5% - 8 hr, 12 hr, 16 hr) were employed for induced mutations 100 seeds were taken for each treatment. All individual M1 spikes were used to raise spike to row progenies in M2 generation visual morphological observations were used to isolate different mutants based on leaf characters. Segregation and breeding behaviour was studies in M3 using plant progenies obtained from M2 generation. |
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