African Journal of
Biotechnology

  • Abbreviation: Afr. J. Biotechnol.
  • Language: English
  • ISSN: 1684-5315
  • DOI: 10.5897/AJB
  • Start Year: 2002
  • Published Articles: 12193

Full Length Research Paper

Low dose of ultra violet (UV)-B adaptation enhances yield in rice somaclones

Sethuraman Ramakrishnan
  • Sethuraman Ramakrishnan
  • Department of Plant Sciences, School of Biological Sciences, Madurai Kamaraj University, Madurai, India. Department of Plant Science, Bharathidasan Government College for Women (Autonomous), Puducherry, UT of Puducherry, India
  • Google Scholar
Govindasamy Kulandaivelu
  • Govindasamy Kulandaivelu
  • Department of Plant Sciences, School of Biological Sciences, Madurai Kamaraj University, Madurai, India
  • Google Scholar


  •  Received: 24 May 2012
  •  Accepted: 18 December 2013
  •  Published: 01 January 2014

Abstract

In vitro regenerated rice (Oryza sativa cv. ADT 43) plantlets under ultraviolet-B selection showed altered growth and yield responses. Of the two sets of calli treated with low (10 min d-1) as well as high (30 min d-1) dose of ultraviolet-B (313 nm), shoots regenerated from low dose ultraviolet-B treatment evinced increased growth and yield. Panicle length and the number of grains were highest in ultraviolet-B (10 min) selected plantlets as compared to the control. Re-irradiation of treated plantlets showed increase in panicle length and grain numbers. Weight of the grains was also high in ultraviolet-B adapted plants.

 

Key words: Calli, irradiation, grains, panicle, re-irradiation.

Abbreviation

Abbreviation: MS, Murashige and Skoog; 2,4-D, 2,4-dichlorophenoxyacetic acid; BAP, 6-benzylaminopurine; IBA, indole-3-butyric acid; REIR, reirradiation.