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Articles by Naheed Akhtar
Total Records ( 3 ) for Naheed Akhtar
  Naheed Akhtar , Muhammad Hanif Munawwar , Mozammil Hussain and Masud Mahmood
  Tuber borne bacterial, fungal and viral diseases adversely affect the yield of potato (Solanum tuberosum L.) cultivars. The establishment of a pathogen-free stock of seed potatoes could be advantageous. Sprouts of potato cultivars Diamont, Cardinal, Desiree, Adora, Dura and Burna were used as the explants source for tissue culture. Using the nodal tissues, plantlets with complete differentiation into shoots and roots were achieved in darkness. These plantlets were multiplied in culture medium. Excised meristems were also multiplied in vitro. Using selected culture medium, virus free potato plantlets were produced. A simple and effective direct regeneration protocol has been developed which can be commercially exploited in the country for virus free seed production of potato for different agro-ecological zones.
  Naheed Akhtar , Muhammad Bilal Anwar , Ghulam Jilani , Habib Iqbal Javed , Shaheena Yasmin and Irshad Begum
  Experimental trials were conducted at Integrated Pest Management Programme, National Agriculture Research Centre Islamabad, to evaluate the resistance of host plants (cereals) against Rhopalosiphum padi (L.). For evaluation of susceptibility, twenty varieties/-advanced lines of National Uniform Wheat Yield Trails (NUWYT) Normal (N) of year 2004-2005 were used. In seedling bulk tests varieties/advanced lines were grouped into three categories resistant, moderately resistant and susceptible. Data from seedling bulk tests showed that DN-47 and PR 87 lines of wheat were resistant to aphid as compared to the other varieties/-advanced lines. In antixenosis tests varieties/-advanced lines were grouped into three categories, least preferred, moderately preferred, highly preferred. Lines V-01180, DN-47 and PR-84 were least preferred, sixteen varieties/-advanced lines were moderately preferred and only one variety V-9021 was found to be highly preferred.
  Naheed Akhtar
  The study was conducted at the Agricultural Biotechnology Research Labs, National Agricultural Research Centre, Islamabad to ascertain varietal differences between four wheat varieties (Arz, Pak-81, LU-26 and Pavon); with respect to their tolerance to sodium chloride (NaCl) stress indicated by callogenesis and organogenesis. Murashige and Skoog (MS) modified medium supplemented with 50, 100, 150 and 200 (mM) sodium chloride salt was used for tissue culture. Results clearly indicate striking differences among different wheat varieties in callus induction and regeneration under salinity stress. LU-26 was the most tolerant cultivar followed by Pavon, Pak-81 and Arz. The findings can help in breeding for salt tolerance in wheat.
 
 
 
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