Peroxidase, indoleacetic acid oxidase, and amylase activity in necrotic wheat hybrid and its parents

At the seedling stage, growth pattern and changes in the activity of enzymes were studied in "necrotic" hybrid of wheat (Triticum aestivum) and its parents HI 617 (female) and HD 2160 (male). Growth of the hybrid is less when compared with either parent in light as well as in dark. In dark the hybrid shows higher activity of amylase, peroxidase, and indoleacetic acid oxidase than either parent. In light, however, the activity of peroxidase and amylase is intermediate between the two parents in the axis and root and higher than the parents in the endosperm of the hybrid. It appears that light modulates gene activity of the hybrid and in light the male-parent gene is dominant.