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Articles by S. S. Alam
Total Records ( 4 ) for S. S. Alam
  Muhammad Sibtain , Iftikhar A. Khan , M. B. Illyas and S. S. Alam
  The roots and stems of each of the five advanced chickpea lines produced fungitoxic compounds when extracted in methanol. Three different types of antifungal compounds designated as compound A, B and C were identified through the bioautography on TLC plates. The compound B at Rf value 0.87 was produced in higher amounts in the lines 1004/99, 99115 and 99105 with better wilt resistance. Compounds B and C appears to have no significant role in wilt resistance.
  I. A. Khan , J. A. Khan and S. S. Alam
  Isolates of Ascochyta rabiei were collected from different chickpea growing areas of Pakistan. The isolates were tested for virulence on two chickpea cultivars ILC-3297 (resistent) and ILC-1929 (susceptible). These isolates were found to synthesize different amounts of phytotoxins Solanapyrone A and C. The virulence of the isolates were found dependent upon the amounts of phytotoxins produced by these isolates.
  A. Shakoor Shakir , S. M. Khan , M. B. Ilyas and S. S. Alam
  A study of determine the location of Alternaria radicina Meier, Drechsler and Eddy, in different seed components of carrot revealed that hyphae of A. radicina were found in outer and inner pericarp but not in endosperm and embryo. In transmission study surviving plants yielded 54.5 % recovery of A. radicina from dried leaves while a lower recovery of 4.5 percent from green leaves. In case of stem it was 14.5 percent after 80 days. Overall recovery of A. radicina from green parts was very low.
  Khalid P. Akhtar and S. S. Alam
  Powdery mildew is a serious disease of mango in the world caused by a fungus Oidium mangiferee. Young tissues of all parts of the inflorescence, leaves and attacked by the fungus. Crop losses up to 100 percent have been reported in oasis of blossom infection when disease spreads in epidemic form. Conidia are dispersed by wind and germinate best at 20.25°C with moderate humidity. Pathogen survive from one seauch to the next as mycelia in dormant buds and as haustoria en old infected leaves. Telemorph of the fungus. have not been reported in Pakistan or from the other mango growing regions of the world. No completely resistant cultivar of mango has been reported any where but they vary in their susceptibility to powdery mildew. Fungicides applied at 30-40 Percent flowering stage followed by two applications at 2-3 week intervals depending upon environmental conditions can effectively control the malady.
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