International Journal of Pure & Applied Bioscience (IJPAB)
Year : 2017, Volume : 5, Issue : 5
First page : (366) Last page : (379)
Article doi: http://dx.doi.org/10.18782/2320-7051.5465

Effect of Spacing and Plant Growth Regulators on Plant Growth Parameters, Seed Yield and Its Attributes in Okra [Abelmoschus esculentus (L.) Moench

Chormule*, S. R. and Patel, J. B.
Department of Seed Science and Technology, College of Agriculture, Junagadh Agricultural University,
Junagadh – 362 001, Gujarat, India
*Corresponding Author E-mail:sagarjau555@gmail.com
Received: 18.08.2017  |  Revised: 23.09.2017   |  Accepted: 26.09.2017  

 ABSTRACT

The present investigation entitled “Effect of spacing and plant growth regulators on plant growth parameters, seed yield and its attributes of okra [Abelmoschus esculentus (L.) Moench]” was conducted for two consecutive seasons (kharif 2015 and kharif 2016). Seeds of okra variety GJO 3 were treated with aqueous solution of growth regulators viz., GA3, IBA and NAA, each at 50, 100 and 150 ppm concentrations and without growth regulators (water soaking). The growth regulators were applied as seed soaking treatment for 8 hours. A treated seeds were grown in field with three plant spacing (S1 : 45 cm × 30 cm, S2 : 60 cm × 30 cm and S3 : 60 cm × 45 cm) during kharif 2015 and 2016 at the Sagdividi Farm, Department of Seed Science and Technology, College of Agriculture, Junagadh Agricultural University, Junagadh in Split Plot Design (Factorial) replicated thrice. Three plant spacing were kept in main plots and seed treatments with growth regulators along with different doses and a control (water soaking) were kept in sub-plots. Observations were recorded on plant growth parameters viz., field emergence, plant height (cm), stem diameter (cm) and number of branches per plant; and seed yield and its attributes viz., days to flower initiation, number of fruits per plant, fruit length (cm), fruit thickness (cm), number of locules per fruit, number of seeds per fruit and seed yield per plant (g). All plant growth parameters, seed yield and its attributes studied were significantly influenced by different plant spacing and application of different plant growth regulators as seed treatment prior to sowing, except field emergence and days to flower initiation during both the years of experimentation (kharif 2015 and 2016) and fruit length in pooled over years due to spacing. Interactions effects of spacing and seed treatments (S x T) with growth regulators were found significant for field emergence, number of branches per plant, fruit length and fruit thickness during kharif 2015; for fruit length and fruit thickness during kharif 2016; and for field emergence in pooled over years. Wider spacing of 60 cm x 45 cm (S3) and seeds treated with GA3 150 ppm (T3) recorded significantly the maximum values for growth parameters viz., plant height, stem diameter and number of branches per plant; seed yield and yield attributes viz., seed yield per plant, number of fruits per plant, fruit thickness and number of seeds per fruit. A combination of wider plant spacing 60 cm x 45 cm and seed treatment of GA3 @ 150 ppm before sowing (S3T3) was found best suited combination, as it has good field emergence and produced significantly and/or comparatively the maximum plant height, stem diameter, number of branches per plant, number of fruits per plant, fruit length, fruit thickness, number of seeds per fruit and seed yield per plant.

Key words: GA3, growth regulators, IAA, NAA, okra, spacing, viability

Full Text : PDF; Journal doi : http://dx.doi.org/10.18782

Cite this article: Chormule, S.R. and Patel, J.B., Effect of Spacing and Plant Growth Regulators on Plant Growth Parameters, Seed Yield and Its Attributes in Okra [Abelmoschus esculentus (L.) Moench], Int. J. Pure App. Biosci.5(5): xxx-xxx (2017). doi: http://dx.doi.org/10.18782/2320-7051.5465