Indian Society of Genetics & Plant Breeding

Important

NATURAL OUTCROSSING IN LATHYRUS SATlVUS L.

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The extent of natural outcrossing was studied in three genotypes of Lathyrus sativus L.
(grasspea) in November 1992 and 1993 at the Pulses Research Centre, Regional Agricultural
Research Station, Ishurdi, Pabna, Bangladesh. Individual plots of red, pink and white'
flowered (all recessive) genotypes were surrounded by a dominant marker line with blue
flowers. The number of blue flowered plants in the progeny rows of 30 random plants of
each test genotype was recorded. The extent of outcrossing was 27.8% for red, 19.40/. for
pink, and 9.8% for the white genotypes. Differences among genotypes were significant. It
was assumed that these differences were due to brightness of flower colourwhich attracted
bees. Implications of outcrossing to future breeding strategies and maintenance of genetic
purity of varieties are discussed.
 

Keywords: Genetic deterioration, genotypic differences, grasspea, Lathyrus sativus, natural outcrossing.

Info

Year: 1995
Volume: 55
Issue: 2
Article DOI: NA
Print ISSN: 0019-5200
Online ISSN: 0975-6906

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