An experiment was carried out during summer season, 2018 on “Role of plant growth regulators on quality seed yield of bottle gourd”. The experiment was laid out in randomised block design (Factorial) with three levels of NAA (50 ppm, 75 ppm, 100 ppm), GA3 (50 ppm, 75 ppm, 100 ppm) and Ethrel (100 ppm, 200 ppm, 300 ppm) and control (P0- distilled water spray) at three stages of spray (S1 - At two true leaf stage, S2 - 1st at two true leaf stage and 2nd at four true leaf stage and S3 - 1st at two true leaf stage, 2 nd at four true leaf stage and 3rd at flower initiation stage) and replicated thrice. Significantly highest seed yield (465.22 kg/ha) was obtained under the foliar application of Ethrel @ 300 ppm sprayed at stage S3 (1st at two true leaf stage, 2nd at four true leaf stage and 3rd at flower initiation stage). Significantly highest number of seeds per fruit (425) was recorded with the GA3 @ 50 ppm sprayed at stage S3 (1st at two true leaf stage, 2nd at four true leaf stage and 3rd at flower initiation stage) whereas 100 seed weight (13.48 g) was observed in treatment P6S3 (P6- GA3 100 ppm and S3-1st at two true leaf stage, 2nd at four true leaf stage and 3rd at flower initiation stage) and found non-significant. The maximum germination per cent (90.33 %) and seed viability (95.66 %) were observed when the plant was sprayed with GA3 @ 100 ppm at stage S2 (1st at two true leaf stage and 2 nd at four true leaf stage) which was found non-significant.
eight (mg), SVI-I-seedling vigour index I, SVI-II-seedling vigour index II, EC-Electrical Conductivity (dS/cm/seed), SV- Seed viability (%) 1360 Int.J.Curr.Microbiol.App.Sci (2019) 8(9): 1357-1362 Table.2 Interaction effect of stages of spray and PGRs on seed quality parameters Treatme nts NS/F SY(Kg/ ha) TW (g) GP (%) SL (cm) SDW (mg) SVI-I SVIII EC(ds /m) SV (%) P0 x SI P0 x S2 P0 x S3 P1 x S1 P1 x S2 P1 x S3 P2 x S1 P2 x S2 P2 x S3 P3 x S1 232 249 262 276 282 309 318 270 359 289 299.29 308.91 295.82 318.47 334.16 349.82 329.92 347.68 363.67 337.82 11.62 11.36 12.7 10.85 11 11.16 10.9 11.2 11.35 11.12 80.33 79.66 80.66 84.66 83.66 85.33 84 85.66 87 85.33 21.33 18 22.66 19.66 22 25.33 23 24.66 23.33 27.66 0.50 0.43 0.52 0.49 0.52 0.55 0.53 0.55 0.54 0.61 19.13 14.34 17.82 17.58 17.97 21.36 19.45 19.32 18.66 21.85 40.02 34.41 40.98 40.42 42.54 46.30 43.52 43.08 43.47 48.35 0.93 0.89 0.92 0.85 0.87 0.81 0.78 0.84 0.80 0.82 85.66 86.00 85.00 89.33 88.66 90.33 88.66 91.00 90.67 90.00 P3 x S2 319 348.74 11.08 84.66 22.33 0.52 18.23 42.14 0.74 89.66 P3 x S3 290 356.76 11.14 86.33 25 0.55 20.75 45.98 0.76 92.33 P4 x S1 379 316.58 11.36 86 29 0.64 23.78 52.23 0.56 91.66 P4 x S2 419 296.82 11.52 85.66 18.66 0.46 17.05 37.26 0.71 90.33 P4 x S3 425 325.95 11.65 87.33 23 0.52 19.45 43.14 0.72 93.33 P5 x S1 391 344.72 12.78 86 23.66 0.54 19.87 44.28 0.75 92.33 P5 x S2 346 355.46 13.24 88.33 25.66 0.58 20.87 45.85 0.56 94.66 P5 x S3 361 344.76 13.36 88 27 0.59 22.59 48.53 0.60 93.66 P6 x S1 393 343.81 13 90 25.33 0.57 20.94 47.37 0.70 95.00 P6 x S2 374 315.12 13.36 89.66 24.66 0.54 20.14 44.26 0.61 94.33 P6 x S3 403 403.68 13.48 90.33 28 0.63 23.84 48.91 0.54 95.66 P7 x S1 319 365.79 10.75 80.33 27 0.60 21.69 48.04 0.75 85.33 P7 x S2 291 377.46 10.88 82 25 0.56 20.50 46.00 0.80 86.66 P7 x S3 309 384.99 10.92 83.33 21.66 0.51 17.11 40.45 0.69 89.00 P8 x S1 P8 x S2 P8 x S3 P9 x S1 P9 x S2 P9 x S3 SEm (±) C.D (P=0.05) 273 334 312 326 298 303 8.52 24.13 393.24 425.19 430.78 399.61 441.18 465.22 7.44 21.06 11.14 11.46 11.85 10.95 11.38 11.78 0.23 0.65 85 84.33 83 81 82.66 84.66 1.45 NS 21 29.33 18.66 26 24.33 20.33 0.45 1.28 0.49 0.65 0.45 0.58 0.54 0.48 0.011 0.031 16.45 23.85 14.93 21.06 20.11 17.21 0.51 1.46 38.04 53.03 36.08 46.82 44.31 40.98 0.83 2.36 0.78 0.73 0.64 0.65 0.71 0.68 0.015 0.042 90.66 89.33 88.00 85.66 87.66 89.33 2.02 NS 1361 Int.J.Curr.Microbiol.App.Sci (2019) 8(9): 1357-1362 Acknowledgement Authors acknowledge with thanks to my advisory committee and chairman of Department of Horticulture (Vegetable & Floriculture), Director Research and Dean, Post Graduate Studies, Bihar Agricultural University, Sabour, Bhagalpur for providing necessary facilities during the course of investigation References Arvind kumar, PR, Vasudevan, SN, Patil, MG, Rajrajeshwari, and C (2012) Influence of NAA, triacontanol and boron spray on seed yield and quality of bitter gourd (Momordicacharantia) cv PUSA VISESH Asian Journal of Horticulture Vol.7 No.1 pp.36-39 ref.7 Bose, TK, Som, MG, Kabir, J (1999) Flowering, sex mechanism, pollination and fruit set in vegetable crops Naya Prakash Calcutta, pp.53-54 Dostogir H, Karim MA, Pramanik MHR, Rehman AAMS (2006) Effect of gibberellic acid (GA3) on flowering and fruit development of bitter gourd (Momordica charantia L.) 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Standl.] Int.J.Curr.Microbiol.App.Sci 8(09): 1357-1362 doi: https://doi.org/10.20546/ijcmas.2019.809.156 1362 ... course of investigation References Arvind kumar, PR, Vasudevan, SN, Patil, MG, Rajrajeshwari, and C (2012) Influence of NAA, triacontanol and boron spray on seed yield and quality of bitter gourd. .. B S, Biradar, D Pand Ravi H (2010) Effect of growth regulators and stages of spray on growth, fruit set and seed yield of ridgegourd Karnataka Journal of Agricultural Sciences Vol.23 No.2 pp.239-242... VM, Patil RB, Suryawanshi YB, Mate SN (1996) Effect of plant growth regulators and boron on flowering, fruiting and seed yield in bitter gourd Seed Research 1998; 26(1): 97-100 Hilli, J S, Vyakarnahal,