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Genetic Variation for Resistance to Russian Wheat Aphid in F2-Derived Families of Wheat (Triticum aestivum L.)

Publish Year: 1385
Type: Journal paper
Language: English
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JR_JASTMO-9-1_004

Index date: 13 November 2023

Genetic Variation for Resistance to Russian Wheat Aphid in F2-Derived Families of Wheat (Triticum aestivum L.) abstract

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.

Genetic Variation for Resistance to Russian Wheat Aphid in F2-Derived Families of Wheat (Triticum aestivum L.) Keywords:

Genetic Variation for Resistance to Russian Wheat Aphid in F2-Derived Families of Wheat (Triticum aestivum L.) authors

A. Arzani

Agronomy and Plant Breeding Department, College of Agriculture, Isfahan University of Technology, Isfahan, ۸۴۱۵۵, Islamic Republic of Iran.

N. L. V. Lapitan

Soil and Crop Sciences Department, Colorado State University, Fort Collins, CO ۸۰۵۲۳, U.S.A.