Journal of FARM SCIENCES, Vol 25, No 1 (2012)

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Influence of planting ratios and staggered planting on seed yield and quality in hybrid seed production of sunflower hybrid RSFH-130

N.M. Shakuntala, B.S. Vyakaranahal, I. Shankergoud, V.K. Deshpande, B.T. Pujari, H.L. Nadaf

Abstract


An investigation was carried out at Main Agricultural Research Station, University of Agricultural Sciences, Raichur, to know the influence of planting ratios and staggered planting on seed yield and quality in hybrid seed production of sunflower hybrid RSFH-130 during rabi 2008 and 2009. The experiment consisted of 16 treatment combinations consisting of four planting ratios [P1:(3:1), P2: (4:1), P3 : (5: 2), P4: (7 : 2)] and four staggered planting (S1 : Simultaneous planting of pollen parent to seed parent, S2 : 3 days late planting of pollen parent to seed parent, S3 : 6 days late planting of pollen parent to seed parent and S4 : 9 days late planting of pollen parent to seed parent) of male parent which was laid out in split plot design with three replications. The male parent (R-630) was early by 5-6 days in flowering than female parent (CMS-104A). The 100 seed weight, seed filling percentage, seed weight per plant and seed yield per hectare were found to be significantly higher in P3 (5 : 2 female to male) and P1 (3 : 1 female to male) compared to P4 (7 : 2 female to male) and P2 (4 : 1). The hybrid seed yield per hectare (989.73 kg) and seed weight per plant (44.29 g) were high when male parent was sown six days late to female parent (S3) which is due to better synchronization of flowering of parental lines. 

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