The effect of wheat varieties on longevity and reproduction potential of Russian wheat aphid Diuraphis noxia Mordvilko
1995
Reza Rassoulian, Gh. | Dowlati, L.
Russian wheat phid has been known as one of the most important pests on wheat and barley in the recent years. This pest is spread in several State of U. S. A. and Canada and cause a high damage on wheat farms. There are many research projects in the world in order to decrease the damage of this pest by resistante varieties of wheat. In order to investigate the longevity and reproduction of Russian wheat aphid on wheat varieties, 13 varieties of wheat were selected as: Argentine, Dastjerdi, Zarand, Rashid, Azar, Adleghadim, Adlejadid, Khalij, Naz, Sefideh, Darab and Ghods. The plants were grown in plastic pods filled with vermculite soil, in greenhouse condition (20-25C and 75 R. H.). After 30 days first instar nymphs were placed on a single leaf of each variety. Each experiment was replicated four times. During the study (6 weeks), longevity and reproductive data were recorded weekly. The results showed that the longevity of aphids on all varieties was the same, but reproductive performance was significantly reduced on some varieties such as Shahi and Sefideh
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