Based on data obtained in cluster analysis, accessions with maximum genetic distance will be selected to screen markers for polymor phic banding patter ns.
An unexpectedly strong relationship between the overall resistance and growth potential of the accessions complicated identification of tolerance.
A two-phase pretreatment technique was developed for breaking seed dormancy and was validated using different accessions and seed lots.
In this study, biomass production of aphids and individual plants were recorded for diverse accessions from 19 species of wheat and three species of aphid.
Overall resistance to the three aphid species was observed in five to seven accessions per aphid species.
Most of the accessions with good resistance had low levels of seedling infection and small numbers of plants infected at harvest.
The judging panel (farmers, housewives, cooks and scientists) rejected 70 % of the accessions due to poor post-harvest quality traits.
Two accessions with antibiosis reduced aphid biomass by 60% compared with commercial wheats.
