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: 421

Full Length Research Paper

Effect of African rice gall midge on yield and its components on inter-specific rice progenies, using correlation and principal components as analysis tools

M. Bashir1*
  • M. Bashir1*
  • 1National Cereals Research Institute Badeggi, Niger State, Nigeria.
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A. T. Maji1
  • A. T. Maji1
  • 1National Cereals Research Institute Badeggi, Niger State, Nigeria.
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A. S. Gana2
  • A. S. Gana2
  • 2Department of Crop Production Technology, Federal University of Technology, Minna, Niger State, Nigeria.
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  •  Accepted: 24 September 2013
  •  Published: 29 November 2013

Abstract

Inter-specific rice progeny lines (Oryza glaberrima × Oryza sativa) were evaluated for African rice gall midge resistance at two locations in 2010 cropping season. The experiment was made of 16 rice progeny lines including the two parents; FARO52 and Tog 7442 and a known susceptible check FARO 37. The experiment was conducted in the lowland experimental fields of National Cereals Research Institute at Badeggi and Edozhigi. The fields were laid out in a randomized complete block design in three replications. Gall midge was scored at 42 and 63 days after transplanting, other parameters collected include plant height, days to 50% flowering and grain yield. Principal component analysis indicates that the first three principal components accounted for 64.5% of the total variation in the population across the two locations. Correlation analysis showed a negative correlation (P=0.05) between percentage midge infestations at 63 DAT with number of panicle squared meter. Grain yield did not correlate significantly (P=0.05) with percentage gall midge infestation at 42 and 63 DAT, but there was a significant positive correlation (P=0.05) between percentage gall midge infestation at 42 and 63 DAT. Result revealed that FAROX 521-E-900-1, FAROX 521-H-559-1 and FAROX 521-H-686-1 are found to be resistance to African rice gall midge (AfRGM), while  FAROX 521-E-430-1 and FAROX 521-H-433-1 gave a better yield potential under midge infestation and could be used for further genetics studies.

Key words: African rice gall midge (AfRGM), inter-specific, correlation, principal component, grain yield.