influence of planting ratios, staggered planting and seed polymer coating on seed yield, quality and storability in RSFH-130 sunflower hybrid
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Date
2009
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UAS Dharwad
Abstract
Field and laboratory experiments were carried out at MARS, UAS, Raichur to study the
influence of planting ratios and staggered planting of male (R-630) and female (CMS-104A)
parental lines during rabi 2007 and 2008 on seed yield and quality in RSFH-130 sunflower hybrid
during kharif 2007 and 2008. The female parent was late in days to 50% flowering by 5 to 6 days than
male parent.
The hybrid seed yield per ha and seed weight per plant were high when male parent was
sown six days late to female parent. The lower seed yield per ha with simultaneous sowing and seed
weight per plant with nine days late sowing of pollen parent were observed. Sowing of pollen parent
three days and six days later to seed parent resulted in higher 100-seed weight, kernel weight,
volume weight, dry weight and germination as compared to simultaneous sowing and nine days later
sowing of pollen parent to seed parent The 100-seed weight, seed filling percentage, seed weight per
plant and seed yield per ha were found to be significantly higher in 5:3 and 3:1 (female to male)
compared to 7:2 and 4:1 planting ratios.
Effect of seed polymer coating with chemicals on growth, yield and storability in sunflower
hybrid RSFH-130 (Experiment-II and III) consisted of eight seed treatments with three replications.
Significantly higher seed weight per plant and seed yield per ha were obtained in seeds treated with
polymer seed coating @ 5g per kg of seeds + vitavax @ 2 g per kg of seeds + imidachloprid @ 5 g
per kg of seeds (T8) as compared to other treatments and untreated control (T1). Seed quality
parameters during storage showed significantly highest in treatment T8 and lowest in T1 in both the
containers. Seeds stored in polythene bag performed better than cloth bag.