Exploiting wild accessions for development of high yielding new rice genotypes

R Wickneswari V Ratnam, M. A R Bhuiyan

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Eight transgressive variants were selected from a cross between Oryza rufipogon Griff. (IRGC105491) and MR219, a Malaysian high yielding rice cultivar. The field trials revealed the yield potentiality of the variants and showed significantly (p<0.05) higher yield than the control, MR219. Quantitative trait loci (QTLs) for agronomic traits were validated in the selected variants in BC2F5 generation. The yield of these variants was influenced by several QTLs related to days to maturity, tillers per plant, panicles per plant, spikelets per panicle and thousand grain weight. Chromosome segment analysis confirmed the introgression of wild alleles for yield and yield related traits. Registration process for eight variants has been initiated under the National Plant Variety (NPV) Act of Malaysia with the preferred name of UKMRC1 to UKMRC8. The DUS test was conducted in 2011 following UPOV guidelines in collaboration with Department of Agriculture, Malaysia to confirm distinctness, uniformity and stability of these variants. Steps will be taken for some of the promising registered variants to be released as new varieties.

Original languageEnglish
Pages (from-to)89-96
Number of pages8
JournalMalaysian Applied Biology
Volume43
Issue number2
Publication statusPublished - 1 Dec 2014

Fingerprint

Quantitative Trait Loci
Malaysia
Genotype
rice
genotype
quantitative trait loci
Agriculture
inflorescences
Names
Oryza rufipogon
Chromosomes
Alleles
Guidelines
new variety
Weights and Measures
tillers
agronomic traits
introgression
field experimentation
Oryza

Keywords

  • DUS test
  • Inter-specific hybridization
  • Introgression
  • Oryza rufipogon
  • Transgressive variants
  • Yield potentiality

ASJC Scopus subject areas

  • Agricultural and Biological Sciences(all)

Cite this

Exploiting wild accessions for development of high yielding new rice genotypes. / V Ratnam, R Wickneswari; Bhuiyan, M. A R.

In: Malaysian Applied Biology, Vol. 43, No. 2, 01.12.2014, p. 89-96.

Research output: Contribution to journalArticle

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