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Influence of plant growth regulators on growth, morpho-physiological characters and yield of summer sesame (Sesamum indicum L. cv. Rama) under moisture stress

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Abstract

Field experiments were conducted with sesame (Sesamum indicum L. cv. Rama) for two years (1997 and 1998) to study the effect of three level of irrigation (F+C, B+C, B+F+C) and two growth regulators (CCC, 200 ppm CCC; 100 ppm and BX-112, 100 ppm; BX-112, 50 ppm) on growth (root and shoot length, average number of primary branches/plant), morpho-physiological growth parameters(LAI, LAD, CGR and NAR), yield attributing parameters(average number of capsule/plant, average number of seeds/capsule) and seed yield. Irrigation at B+F+C stage showed significant effect on these parameters. Among the growth regulators, CCC, 200 ppm showed remarkable results on these parameters and seed yield. Seed yield in CCC, 200 ppm treatment was more than 53% in comparison to water soaked seeds. The interaction between irrigation and PGR showed better seed yield and it was concluded that the growth regulator CCC might be utilized for enhancement of seed yield of summer sesame under field condition.

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Abbreviations

F+C:

irrigation at peak flowering and capsule development stages

B+C:

irrigation at branching and capsule development stages

B+F+C:

irrigation at branching, peak flowering and capsule development stages

CCC:

cycocel, BX-112-prohexadione calcium

PGR:

plant growth regulator

LAI:

leaf area index

LAD:

leaf area duration

CGR:

crop growth rate

NAR:

net assimilation rate

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Authors and Affiliations

  1. Crop Physiology laboratory, Palli Siksha Bhavana, Visva-Bharati University, Dt. Birbhum, Pin. 731236, P.O. Sriniketan, West Bengal, India

    Arjun Kumr Garai & Jayanta Kumar Datta

Authors
  1. Arjun Kumr Garai
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  2. Jayanta Kumar Datta
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Garai, A.K., Datta, J.K. Influence of plant growth regulators on growth, morpho-physiological characters and yield of summer sesame (Sesamum indicum L. cv. Rama) under moisture stress. Acta Physiol Plant 21, 277–281 (1999). https://doi.org/10.1007/s11738-999-0043-7

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  • DOI: https://doi.org/10.1007/s11738-999-0043-7

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