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Articles by Mohammad Afzal
Total Records ( 5 ) for Mohammad Afzal
  Zahid Pervaiz , Mohammad Afzal , Yang Xiaoe and Luo Ancheng
  Fourteen wheat cultivars were tested against various salinity levels to develop selection criteria for salt tolerance on the basis of different growth characteristics. It was concluded that assessment of tolerance to salinity based on different growth characteristics could not be considered worthwhile. In general, with the increase of salinity, shoot and root yield, shoot length, root length in some respect, number of total and green leaves and potassium contents decreased gradually where as sodium contents increased both in shoot and root of all the cultivars tested. Highly significant correlation was observed among, absolute shoot yield and absolute plant height, relative shoot yield and relative plant height, absolute and relative shoot root yield, absolute and relative plant height and absolute and relative green leaves.
  Zahid Pervaiz , Mohammad Afzal , Sun Xi , Yang Xiaoe and Luo Ancheng
  A solution culture experiment was conducted in wire house of the Department of Soil Science and Agricultural Chemistry, Zhejiang Agricultural University, Hangzhou, P.R.China with natural daylight and day/night temperature of 17/7 oC respectively with the objective to correlate the results of different physiological parameters with salt tolerance of cultivars under 100 and 200 mol m -3 NaCl salinity. The two Chinese cultivars used were Bao-119, CV.86-6 and one Pakistani was FSD-85. The results of this study indicate, that with the gradual increase of salinity dry weight of shoot and root, potassium, calcium contents both in shoot and root and leaf area decreased, where as sodium, chloride and chlorophyll contents increased in all the cultivars except chlorophyll contents decreased at 100 mol m -3 salinity in Bao-119. Photosynthesis increased at 100 mol m -3 salinity and decreased at 200 mol m -3 salinity in all cultivars. The tolerance of cultivars on cumulative dry weight means (3 treatments) was in order of CV.86-6 > FSD-85 > Bao-119 whereas at 200 mol m -3 salinity was as FSD-85 > CV.86-6 > Bao-119. The cultivars FSD-85 and CV.86-6 showed salt inclusion and exclusion mechanisms respectively at 200 mol m -3 salinity in relation to ionic composition. Consistent pattern was found between relative leaf area and dry weight of shoot at 200 mol m -3 salinity and on cumulative mean (3 treatments) basis. In-consistent pattern was found among chlorophyll contents, photosynthesis rates and tolerance of cultivars at both the salinity levels. From this study it was also concluded, that before the detail study of mechanisms of salt tolerance, the following considerations are also essential for the authenticity of the proposed tolerant and sensitive cultivars. The cultivars under test must grow under uniform conditions and must receive their own optimum requirements, and sampling for analysis of different parameters must be done after the same duration of stress and preferably from same plant parts. In the absence of the above, it is difficult to correlate the results obtained from analysis of different physiological parameters.
  Nisar Ali Shah , Mohammad Afzal , Syed Mohammad Khair and M.R. Khan
  In Balochistan due to no rain and snow fall which was held responsible for increasing water table, affected Karezes and Tubewells so badly that most of the orchards became dried. The water table declined up to 7 meters annually, and it was not possible for farmers to meet the situation in time. The most of the orchards were either uprooted or replaced by vegetable growing. Data revealed that the plant mortality rate due to drought was higher in S.H.Balochistan i.e., 242.38 trees as compared to the N.H.Balochistan i.e., 240.98 trees. The overall losses of the major fruits was higher in N.H.Balochistan i.e., 54.39 % as to the S.H.Balochistan which was 39.76 %. Results indicated that Kareze and springs became dried as and when the water table become declined. The reduction in yield was estimated as 80% due to irrigation water shortage and 20 % due to high evaporation rate in terms of high temperature. From the survey it is evident that the drought during the year effected the yield and social life of the farmers.
  Yasir Hasan Siddique , Gulshan Ara , Tanveer Beg and Mohammad Afzal
  The genotoxicity study of cyproterone acetate was carried out in mouse bone marrow cells using Sister Chromatid Exchanges (SCEs) and Chromosomal Aberrations (CAs) as a parameter. The effect of cyproterone acetate was studied at 6.25, 12.50 and 25.00 mg kg-1 of body weight and was found to be genotoxic at 12.50 and 25.00 mg kg-1 of body weight. Further the effect of vitamin C on 25.00 mg kg-1 of body weight of cyproterone acetate was also studied. Three doses of vitamin C i.e. 20, 40 and 60 mg kg-1 of body weight were given along with 25.00 mg kg-1 of body weight of cyproterone acetate. Treatments along with vitamin C results in a significant decrease in CAs and SCEs suggesting an antigenotoxic role of vitamin C against cyproterone acetate induced genotoxic damage in mice bone marrow cells.
  Gulshan Ara , Yasir Hasan Siddique , Tanveer Beg and Mohammad Afzal
  Reproductive fitness is best studied by taking together a number of parameters like the mean number of offspring produced and the sex-ratio. The Muslims of Aligarh city are predominantly Sunnis, though a considerable number of Shias are also there. Among the Sunnis approximately one fourth of the population constitute Syed, Sheikh, Moghal and Pathan, while three fourth belong to various lower Biradaris. In the present study we have reported incidence of marriage, fertility and secondary sex ratio among women of high rank (Ashraf) castes and low rank (Ajlaf) castes of Muslims in the northern region. Ashraf comprises Sheikh, Syed and Pathan, whereas Ajlafs belong to Qureshi, Saifi and Ansari biradaris. Maternal age was scored as above 45 and below 45 years of age. Significant effects of maternal age were seen on sterility, fertility and secondary-sex ratio of the offspring, whereas populations did not show consistent differences except those between Ashraf and Ajlaf taken together.
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