Journal of
Plant Breeding and Crop Science

  • Abbreviation: J. Plant Breed. Crop Sci.
  • Language: English
  • ISSN: 2006-9758
  • DOI: 10.5897/JPBCS
  • Start Year: 2009
  • Published Articles: 409

Full Length Research Paper

Genetic diversity of salt tolerance rice landraces in Vietnam

Nguyen thi Lang1*, Pham thi Be Tu1, Nguyen Chi Thanh1, Bui Chi Buu2 and Adbelbagi Ismail3
  1Cuu Long Delta Rice Research Institute, CoDo, Can Tho, Vietnam. 2Institute of Agricultural Science for Southern Vietnam (IAS). 3Internationl Rice research Institute, Philippine (IRRI).
Email: [email protected]

  •  Accepted: 07 May 2009
  •  Published: 31 July 2009

Abstract

A collection of 200 salt tolerance rice landraces was assed for genetic diversity using quantitative agro-morphological characters. ANOVA showed highly significant differences (LSD 0.01) among the traits assessed such as grain length, grain width, number of unfilled grains, 1000-grain weight, leaf length and leaf width except panicles per plant and yield. Correlation coefficients showed that all the traits were highly correlated with each other except yield.. The diversity indices (H’) for quantitative descriptors were high ranging from 0.68 to 0.95. Overall the mean diversity index for all traits was 0.88). Cluster analysis generated by UPGMA grouped the 200 rice landraces into six clusters with similarity coefficient of 20.61. The six clusters were distinct in terms of culms length, number of filled grains, panicle length, panicles per plant, grain length, grain width, yield and biomass.

Key words: Rice, genetic, landraces, diversities.