Vol. 12, Issue 4 (2024)

The present investigation entitled “Investigation on seed yield and seed quality of hybrid and its parental lines in sunflower” was undertaken at the Post Graduate Institute Research Farm, Department of Agricultural Botany, Mahatma Phule Krishi Vidyapeeth, Rahuri Dist. Ahamednagar during kharif 2010, rabi 2010-11 and summer 2011 in two distinct experiments, first to study the influence of dates of sowing and chemical spray treatments on seed yield and seed quality of parental line of sunflower hybrid and another to study the effect of mid storage treatments with fungicides, plant products, halogens and accelerated ageing in storage of hybrid seed of sunflower. The field experiment was laid out on a split plot design for three different seasons with three sowing dates in each season and three replications in each date of sowing. The spray treatments of growth regulators (TIBA @ 25 and 50 ppm) and micronutrient (Boron @ 0.1%) with absolute control (water spray) were applied at the ray floret initiation stage on the parental lines of hybrid Phule Raviraj. The applicability of mother plant nutrition technique to improve seed yield and seed quality of hybrid in sunflower was investigated by applying useful chemicals in combination with suitable growing season and sowing dates and the results were comparably best to the results obtained in control plots and the storability with halogens and botanicals was also found comparably better to the control. Thus, TIBA spray at ray floret initiation stage in rabi season with regular date of sowing for better seed yield and seed quality and seed treatment with halogens and botanicals for better storability appeared to be promising techniques in seed production of hybrid sunflower.