Estimation of economic heterosis in brinjal (Solanum melongena L.)
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Date
2014-06
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G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand)
Abstract
Present investigation was carried out at Vegetable Research Centre, G. B. Pant University of Agriculture & Technology, Pantnagar, Udham Singh Nagar, Uttarakhand in RBD with four replications during 2012 to 2013 in kharif season. Nine F1 combinations were evaluated for yield and yield attributing traits and standard heterosis was estimated against promising standard checks (Pant Rituraj and Pant Samrat). The observations were recorded on randomly selected tagged plants from each replication, on days to 50 per cent flowering, number of infested fruits per plant,
number of fresh fruits per plant, total number of fruits per plant, fruit length (cm), fruit diameter (mm), number of primary branches per plant, average fruit weight (g), plant height (cm), early fruit yield per plant (kg), marketable fruit yield per plant (kg), unmarketable fruit yield per plant (kg), total fruit yield per plant (kg) and total yield per hectare (q). The hybrids Pusa Abhinav DBL-02 (621.62 q), PB71 BB 85 (594.96 q) and BARI Pant Rituraj (559.44 q) respectively performed better for total yield per hectare; PB 71 BB 85 (2.01 kg), PLP-1 BB 85 (1.91 kg) and Pusa Abhinav DBL-02 (1.86 kg) respectively performed better for marketable fruit yield per plant; Pusa Abhinav DBL-02 (0.92 kg), BARI Pant Rituraj (0.73 kg) and Pusa Abhinav Swarn Syamli (0.65 kg) respectively performed better for early fruit per plant; PB 71 BB -85 (42), Pusa Abhinav DBL-02 (43.75) and PLP-1 BB-85 (47.5) respectively performed better for days to 50 per cent flowering. The variance was found highest for total yield per hectare and lowest for unmarketable fruit yield per plant. The coefficient of variation was found highest for number of infested fruits per plant and lowest for average fruit weight per plant. The standard heterosis for various characters was estimated against Pant Rituraj (SP1) and Pant Samrat (SP2). Pusa Abhinav DBL-02 (120.16% over SP1, 29.22% over SP2) and PB-71 BB-85 (110.71% over SP1, 23.67% over SP2) were observed with positive and significant standard heterosis for total yield per hectare; PB-71 BB-85 (110.72% ) with positive and significant standard heterosis over only SP1 for marketable fruit yield per plant; PB-71 BB-85 (-35.38% over SP1 and -38.23 % over SP2), Pusa Abhinav DBL-02 (-23.07% over SP1, -35.66% over SP 2) with negative and significant standard heterosis for days to 50 per cent flowering; BRLVAP-7 PB 69 (-53.97 % over SP1 and -71.42 % over SP2) with negative and significant standard heterosis for number of infested fruits per plant. The hybrids Pusa Abhinav DBL-02, PB71 BB 85, PLP-1 BB 85 and BARI Pant Rituraj were observed as promising hybrids for different desirable characters and can be exploited as commercial hybrids.
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