APHIDS (SCHIZAPHIS GRAMINUM R.) INFESTATION ON DIFFERENT WHEAT (TRITICUM AESTIVUM L.) VARIETIES AND THEIR COMPARATIVE YIELDS

A study was conducted during 2012-13 to assess aphids (Schizaphis graminum R.) infestation and yield performance of five varieties (Faisalabad-08, Inqilab91, Lasani-08, Punjab 11, and Punjnad-01) of wheat (Triticum aestivum L.) at Islamia University, Bahwalpur. Aphids became visible on 24 February (55 DAS) and enlarged regularly till 22 March 2013 (81 DAS). After 22 March their number dwindled till first week of April (93 DAS). Seasonal mean number of aphids was (34.55 aphids) on Faisalabad-08. Average aphid population on Inqilab-91, Lasani-08 and Punjab-11 was 25.24, 24.68 and 23.41, respectively. Statistically aphid population remained similar on Inqalab-91, Lasani-08 and Punjab-11, but less than Faisalabad-08. Outcome verifies that aphids attacked Faisalabad-08 seriously. Whereas, least number of aphids was observed on Punjnad-01 (15.28). Average tillers were highest in Faisalabad-08 (279.67) and lowest in Lasani-08 (212.33). Grains per spike were found maximum in Inqilab91 (60.2) and minimum in Punjab-11 (36.9). Thousand grains weight was highest in Punjnad-01 (43.57 g) and lowest in Faisalabad-08 (32.70 g). Varieties attacked by aphids exhibited poorer 1000 grain weight. Punjab-01, Inqalab-91, Punjab-11 and Lasani-08 should be promoted in Bahawalpur as these showed better performance.

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