African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6578

Full Length Research Paper

Effect of alkalinity on germination efficiency index, seedling growth, free proline and sugar during early seedling growth of rice

Shambhoo Prasad
  • Shambhoo Prasad
  • Department of Plant Molecular Biology and Genetic Engineering, N. D. University of Agriculture and Technology, Kumarganj, Faizabad, U.P., India.
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Bindu Prasad
  • Bindu Prasad
  • Department of Crop Physiology, N.D. University of Agriculture and Technology Kumarganj, Faizabad (U.P.) India.
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Garima Yadav
  • Garima Yadav
  • Department of Plant Molecular Biology and Genetic Engineering, N. D. University of Agriculture and Technology, Kumarganj, Faizabad, U.P., India.
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Deepak Kumar
  • Deepak Kumar
  • Department of Plant Molecular Biology and Genetic Engineering, N. D. University of Agriculture and Technology, Kumarganj, Faizabad, U.P., India.
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Ajit Tiwari
  • Ajit Tiwari
  • Department of Plant Molecular Biology and Genetic Engineering, N. D. University of Agriculture and Technology, Kumarganj, Faizabad, U.P., India.
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Poonam
  • Poonam
  • Department of Plant Molecular Biology and Genetic Engineering, N. D. University of Agriculture and Technology, Kumarganj, Faizabad, U.P., India.
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Arun Kumar
  • Arun Kumar
  • Department of Plant Molecular Biology and Genetic Engineering, N. D. University of Agriculture and Technology, Kumarganj, Faizabad, U.P., India.
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Adesh Kumar
  • Adesh Kumar
  • Department of Plant Molecular Biology and Genetic Engineering, N. D. University of Agriculture and Technology, Kumarganj, Faizabad, U.P., India.
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Kunvar Gyanendra Kumar
  • Kunvar Gyanendra Kumar
  • Department of Plant Molecular Biology and Genetic Engineering, N. D. University of Agriculture and Technology, Kumarganj, Faizabad, U.P., India.
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Pradeep Kumar
  • Pradeep Kumar
  • Department of Plant Molecular Biology and Genetic Engineering, N. D. University of Agriculture and Technology, Kumarganj, Faizabad, U.P., India.
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Amitesh Kumar
  • Amitesh Kumar
  • Department of Plant Molecular Biology and Genetic Engineering, N. D. University of Agriculture and Technology, Kumarganj, Faizabad, U.P., India.
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  •  Received: 06 May 2014
  •  Accepted: 19 September 2014
  •  Published: 30 October 2014

Abstract

Effect of varying level of alkalinity (pH 8.5, 8.8 and 9.2) induced by sodium carbonate on germination efficiency index, seedling growth, free proline and sugar content were recorded in embryo-axis of three rice genotype NDR-501, USAR-1, and IR-24 after 72, 96, 120 h of soaking. Germination efficiency index (GEI), seedling growth and sugar (reducing and non-reducing) decreased with increasing alkalinity levels as compared to control at all the stages of seedling growth. Free proline content of embryo-axis increased with increasing alkalinity levels at all stages of seedling growth. Since tolerant genotypes accumulated relatively more free proline, high sugar content and GEI than susceptible hence these parameter can be used as one of the indices for rapid screening of salt tolerant genotypes.

 

Key words: Alkalinity, genotype, free proline, sugar, germination.