Abstract
Aphid is a serious threat to wheat production in Pakistan. It causes direct and indirect
damage by sucking the cell sap and transmitting fungal and viral diseases, respectively.
Modalities of resistance (antixenosis, antibiosis, tolerance) along with seedling bulk
test were deployed to elucidate resistance in nine varieties of wheat (Pak-81, Millat-08,
Lassani-08, Fareed-06, Faisalabad- 08, Miraj-08, Aas-11, Sahar-06 and Blue Silver)
against aphid, Schizaphis graminum R. under laboratory conditions. All experiments
were laid out in completely randomized design and resistance/susceptibility of the
varieties was categorized in the terms of differential damage rating of aphid to host
plants. Seedling bulk test revealed seven varieties (Pak-81, Millat-08, Fareed-06, Miraj-
08, Aas-11, Sahar-06 and Blue Silver) to be susceptible and two varieties (Faislabad-
08 and Lasani-08) moderately resistant to aphid. In antixenosis test, Miraj-08 and
Fareed-06 were the least and Millat-08 was highly preferred. On Aas-11, Miraj-08,
Lassani-08, Pak-81, Fareed-06 and Sahar-06, aphids were the least fecund and on
Faislabad-08 were highly fecund in antibiosis mechanism of resistance. In tolerant test,
Sahar-06 and Millat-08 proved to be highly tolerant while Fareed-06, Faislabad-08 and
Aas-11 were least tolerant. Pak-81, Lassani-08, Miraj-08 and Blue Silver were
moderately tolerant. Based on the current investigation, Lasani-08 is recommended as
resistant varieties against wheat aphid.
Muhammad Awais Iqbal, Muhammad Waqar Hassan, Hafiz Mahmood ur Rehman, Muhammad Aslam, Moazzam Jamil. (2018) Evaluation of different wheat varieties for resistance against aphid, Schizaphis graminum R. (Homoptera: Aphididae) under laboratory conditions, Asian Journal of Agriculture and Biology, Volume 6, Issue 4.
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