genetic variation for resistance to russian wheat aphid in f2-derived families of wheat (triticum aestivum l.)
نویسندگان
چکیده
the russian wheat aphid (rwa), diuraphis noxia (mordvilko), is a significant insect pest of wheat worldwide. the objective of this study was to assess the genetic variation within and between f2-derived families for reaction to rwa using f3 and f4 families originating from individual f2 plants of a cross between the susceptible line (synthetic hexaploid-11) and the resistance cultivar (‘halt’). the rwa damage of individual plants within each family was measured using different procedures. their reaction types were combined into a single data for each individual family (derived from an individual f2 plants) and subjected to statistical analysis. results indicated that the genetic variation between f2-derived families is greater than within f2-derived families for rwa resis-tance. broad-sense heritability of rwa resistance, calculated by partitioning phenotypic variation into genetic and environmental components, was 73.2%. a narrow-sense herita-bility estimate of 30% was obtained for the rwa resistance in the ‘halt’ synthetic hexaploid-11 cross using parent-offspring (f3: f4) regression procedure.
منابع مشابه
Evaluation of wheat (triticum SPP.) resistance to the russian wheat aphid (diuraphis noxia mordvilko)
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Characterization of resistance components to russian wheat aphid diuraphis noxia (mordvilko) in several wheat (triticum SPP.)genotypes
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عنوان ژورنال:
journal of agricultural science and technologyناشر: tarbiat modares university
ISSN 1680-7073
دوره 9
شماره Number 1 2010
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