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Pakistan Journal of Biological Sciences
Year: 2003  |  Volume: 6  |  Issue: 3  |  Page No.: 191 - 194

Tassel Infestation and Dead Hearts Formation Due to Maize Stem Borer (Chilo partellus) Attack in Maize Varieties

Naheed Akhtar Awan and Abdul Khaliq    

Abstract: Thirty four maize cultivars were evaluated to observe their relative resistance against maize stem borer (Chilo partellus ) during Kharif, 2001. The varieties studied were Sarhad Yellow, EV-1097, Kissan, Babar, Agaiti-85, Gauhar, Margala, EV-2097, NC Br-1, NC BR2, C 6765-28, NARC 25 FI, NARC 251-1, NARC 25 12-2, NARC 25 12-2, NARC 25 12-21, C 6765-9, C 6765-11, C 6765-40 I, C 6765-40, C 6765-24, C 6765-28L, C 6765-29, C 1751-147-3 I, C  1751-54-2,  C 175-223, C 1752-16-2 I, C 1752-23-2 I, C 1752-43-3 I, C 1752-44-2 L, C 1752-14-2, C 1752-16-1, C 1752-17-3 and NARC 25 E. Variety EV-2097 was found to be most susceptible with 3.57% tassel infestation. Varieties NC BR-1, NARC 25 F I, NARC  25 1-1, NARC 25  12-2,  NARC  25  12-2 I, C 6765-40 I, C 6765-24, C 6765-24, C 6765-28 L, C 6765-29, C 1751-147-3 I, C 1751-54-2, C 1652-44-2 L and C 1752-17-3 were found to be resistant. The maximum percentage of dead hearts (3.56%) was recorded on EV-2097 and was observed  as  most  susceptible variety.  The  highly  resistant  varieties  with 0.707% dead hearts include NARC 25 F I, NARC 25 1-1, NARC 25 12-2, NARC 25-2 I, C 6765-28 L, C 6765-40 I, C 1752-23-2 I and C 1752-44-2 L.

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