Studies on Phenology and Positional Polymorphism on Seed Quality of Grain Amaranthus cv. Suvarna

The studies on phenology and positional polymorphism on seed quality of grain amaranthus were conducted at Department of Seed Science and Technology, Tamil Nadu Agricultural University, Coimbatore, Tamil Nadu, India. The study revealed that the fruiting and flowering period extended for 3 and 10 days, respectively, while the spike maturation occurs 26–30 days after completion of flowering and the total duration of the crop from sowing to harvest was 83–87 days. Seeds collected from the middle portion of the spike registered the highest values for the seed and seedling quality attributes (seed recovery, graded seed recovery, 100 seed weight, germination, dry matter production, vigour index) followed by seeds from the bottom and top portions of the spike. The physiological seed characters after 6 months of storage also retained variation exhibited with fresh seeds due to their positional variation.