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Asian Journal of Agricultural Research
  Year: 2011 | Volume: 5 | Issue: 5 | Page No.: 250-259
DOI: 10.3923/ajar.2011.250.259
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Morphological and Molecular Variability in Weedy Rices of Haryana

N. Choudhary, U. Ahuja, V. Chawla, R.K. Jain, P. Kumari and K.R. Batan

Weedy rices commonly known as ‘red rices’, infest rice fields worldwide. They compete with rice for nutrients, deteriorate quality and are difficult to eradicate. Understanding their genetic diversity and the origin may prove helpful in designing an effective way for managing them. A collection of weedy rices from Haryana were evaluated along with cultivated and wild rices for variability and diversity at morphological and molecular level using 35 ISSR primers. Significant variation was observed at morphological and genetic level in weedy rices of Haryana. Weedy rices were found to be distinct from white and red type cultivated rices and wild strains. Twenty one ISSR markers gave amplification of DNA and a total of 91 polymorphic bands were found. With 9 ISSR markers 20 unique bands were observed in 17 genotypes. Markers such as Pr814, Pr836 and Pr858 produced unique bands in weedy rices only. Alleles unique to weedy rices observed by ISSR markers could be converted into SCAR markers for identification. Weedy rices were placed alone as well as with other groups in cluster analysis. Both short and long grain weedy rices were found in collection though at present only long grain types are cultivated indicating that leftover progenies of local cultivars segregated into various plant types giving rise to the weedy rice.
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  •    Taxocoenosis and Distribution of Weed Flora in the Rice Field Monocultures of Kashmir Valley (J and K) India
  •    Microsatellite (SSR) Based Assessment of Genetic Diversity among the Semi-dwarf Mutants of Elite Rice Variety WL112
  •    Community Structure and Distribution of Epigeal-cum-herb Layer Fauna in the Rice Fields of Kashmir (J and K) India
How to cite this article:

N. Choudhary, U. Ahuja, V. Chawla, R.K. Jain, P. Kumari and K.R. Batan, 2011. Morphological and Molecular Variability in Weedy Rices of Haryana. Asian Journal of Agricultural Research, 5: 250-259.

DOI: 10.3923/ajar.2011.250.259






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