Vol. 6 (4) : July-August 2015 issue
Green Farming Vol. 6 (4) : 787-790 ; July-August, 2015
Regulation of sex expression through PGRs and different manual practices in ridge gourd (Luffa acutangula roxb L.) cv. Pusa Nasdar
M.N. VYAS1*, R.G. JADAV2, N.A. PATEL3 and A.D. PATEL4
Department of Horticulture, B.A. College of Agriculture, Anand Agricultural University, Anand – 388 001 (Gujarat)
Designation : 1Hortic. Officer *(horthuricans@gmail.com), 2Assoc. Professor, 3Agric. Officer, 4Research Scientist
Subject : Vegetable Sciences
Paper No. : P-2711
Total Pages : 4
Received : 01 October 2014
Revised accepted : 10 June 2015
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Citation :
M.N. VYAS, R.G. JADAV, N.A. PATEL and A.D. PATEL. 2015. Regulation of sex expression through PGRs and different manual practices in ridge gourd (Luffa acutangula roxb L.) cv. Pusa Nasdar. Green Farming Vol. 6 (4) : 787-790 ; July-August, 2015
ABSTRACT
A field experiment was conducted at Horticulture Research Farm, B. A. College of Agriculture, Anand Agricultural University, Anand during the kharif season 2009, respectively to study the effect of growth regulators and different manual practices on growth parameters like vein length, no. of plant stand, no. of branches per plant and sex expression parameters like no. of male flowers at 45,60,75 DAS, no. of female flowers at 45,60,75 DAS, & sex ratio and yield & yield attributes parameter like average length, weight, girth, volume of fruit and fruit set per plant & yield of ridge gourd cv. Pusa nasdar. The experiment consisted of 10 treatments combination involving three growth regulators viz., NAA 50 & 100 mg/lit., cycocel 100 & 200 mg/lit. and ethrel 100 & 200 ppm at 3-4 leaf stage of plant and control treatment & water spray (distilled water) with other treatment like pinching of primary bud at 30 days, removal of male flowers from 45 days to onward (weekly). Among all the treatment combination ethrel 200 ppm was found to be the most effective in increasing more number of female flowers (6.13, 30.92 and 18.22 at 45, 60 and 75 DAS, respectively), decrease the number of male flowers (112.82 and 118.46 at 60 and 75 DAS, respectively) and thereby reducing the male female ratio (3.61, 3.43 and 2.94 at 60, 90 and 120 DAS, respectively), the treatment of ethrel 200 ppm also increase the fruit setting (21.64), total number of fruits per plant (20.09), length of marketable fruits (23.73 cm), girth of marketable fruits (9.50 cm), weight of marketable fruits (331.67 g), volume of fruits (222.48 cc), thereby fruit yield per plot (20.18 kg) and per hectare (134.50 q) which was at par with ethrel 100 ppm.
Key words :
Fruit set, Growth regulators, Ridge gourd, Sex ratio, Sex expression, Yield attributes.