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Articles by Muhammad Ashraf Malik
Total Records ( 3 ) for Muhammad Ashraf Malik
  Aamira Iqbal , Haq Nawaz Bhatti , Sofia Nosheen , Amer Jamil and Muhammad Ashraf Malik
  Present study shows the complexity of determining the chemical composition of three exopolysaccharides obtained from bacteria associated with plant roots grown under salt stress conditions. Physicochemical analysis indicated that the exopolysaccharides were varying in their chemical composition. Presence of the sugar shows that these were hetero/homo polysaccharides. IR analysis of the crude extracts for the presence of functional groups indicated a need for more purification of exopolysaccharides. Moreover the IR analysis along with histochemical studies showed the presence of hydroxyl, carboxyl and nitro groups. The physicochemical characteristics of the exopolysaccharides showed that the exopolysaccharides would be used in industrial applications. However, a thorough investigation is needed to determine their industrial application.
  Abdus Saboor Khan and Muhammad Ashraf Malik
  The effect of gamma irradiation (0, 15, 25, 35 and 45 kR) was studied on three varieties of wheat viz; Pak-81, LU-26 and SS-5. Significant differences were observed due to varieties and different doses of gamma irradiation. A trend of reduction was observed in seedling emergence percentage and plant height in response to doses. Significant reduction in seedling emergence percentage (79%) and plant height (19.9%) were observed due to 45kR as compared to control. On application of various doses, the parameters of days taken to earing started, days taken to earing completion, number of tillers, number of leaves per plant and spike length increased gradually as compared to control.
  Muhammad Ashraf Malik , Abdus Saboor Khan and Akbar S. Mohmand
  The study was conducted to examine the genetic potential of Brassica varieties/accessions collected from NARC, Islamabad for the development of desirable types to meet the preset requirement of edible oil of the country. This research was carried out on ten varieties/accessions of Brassica species for recording genetic variability in different agro-morphological characters. Data were recorded on various quantitative characters to estimate the genetic variability in varieties/accessions. A large amount of genetic variability was recorded between varieties/accessions for the number of primary and secondary branches, number of pods per plant, plant height, seed yield per plant. The results revealed that a lot of variability exists among the various accessions tested which has the potential to be used for genetic improvement of Brassica species.
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