Performance comparison of micromutant selections of green gram (Vigna radiata L. Wilczek) in advanced mutation generation for yield and physiological attributes

Performance of ten green gram micromutant selections superior in yield atleast by 20% to their parent varieties AAU 34 and AAU 39, was assessed in M₆ generation. Mutant MM₁ of cv AAU 34 gave the highest seed and biological yield, had high leaf area and relative water content of leaf at pod filling stage. The high seed yield of the mutant MM₁ was due to high harvest index combined with lowerbiological yield and lower leaf area. None of the AAU 39 micromutants had higher seed yield than the parent variety, possibly due to lower biological yield inspite of its wide range of variation in biological yield and leaf area.