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Articles by Naima Boughalleb
Total Records ( 3 ) for Naima Boughalleb
  Afifa Bergaoui , Naima Boughalleb , Hichem Ben Jannet , F. Harzallah-Shiric , Mohamed El Mahjoub and Zine Mighri
  The chemical composition of the volatiles isolated by steam distillation from leaves, flowers and fruits of Opuntia lindheimeri var. linguiformis L. Benson, leaves and flowers of Opuntia macrorhiza Engelm and leaves of Opuntia microdasys (Lehmann) gathered in the sea cliff of Monastir town (Tunisia), has been studied by GC and GC-MS. Remarkable differences were noted between the composition and the constituent percentage of the different studied organs. The most important compounds found in leaves, flowers and fruits of Opuntia lindheimeri var. linguiformis were tetradecanoic acid (3.15-13.57%), hexadecanoic acid (8.5-17.33%), butyl tetradecanoate (8.05-21.47%) and (E)-3-Butyldiene phthalide (6.92-15.77%). In the flowers volatile extract of Opuntia macrorhiza, the main compound found was Butyl tetradecanoate (21.14%). The volatile extract from Opuntia microdasys leaves was mainly rich in hexadecanoic acid (13.13%), (E)-3-Butyldiene phthalide (21.4%) and butyl tetradecanoate (5.91%). Volatile components extracts were tested against the fungi Alternaria solani, Botrytis cinerea, Fusarium solani f. sp cucurbitae, Fusarium oxysporum f. sp niveum, Pythium ultimum and Rhizoctonia solani. The strongest inhibitory effect of the all volatile extracts was observed against Alternaria solani.
  Naima Boughalleb and Mohamed El Mahjoub
  Isolation from infected watermelon samples has demonstrated the presence of some fungal complex including Fusarium oxysporum, F. solani, Rhizoctonia bataticola, R. solani, Monosporascus cannonballus, Pythium ultimum and P. echinulatum. These fungal species are different in their distribution among the infected plants and areas surveyed. However, F. oxysporum and F. solani are always predominant. These results showed the almost-presence of the two Fusarium disease of watermelon: Fusarium wilt to F. oxysporum f. sp. niveum and the collars and/or root rot caused by F. solani f. sp. cucurbitae which are the primary fungi of sudden wilt. Analysis in main component of isolation frequency of different fungi showed that their association in homogeneous groups seemed not affected by geographic origin and surveyed year.
  Naima Boughalleb , Neji Tarchoun and Wided Dallagi
  Through incubation of radish (Raphanus sativus), carrot (Daucus carota) and pepper (Capsicum annuum) seed samples on potato dextrose agar at 25°C, six species of fungi were determined as seedborne in these crops. Alternaria dauci, A. Tenuissima, A. tenuis and Epicoccum sp. were found to be transmitted by radish seed. For carrot seed, A. Tenuissima, A. dauci, A. tenuis, Epicoccum sp. and Fusarium oxysporum were identified. However, Alternaria tenuissima and Botrytis cinerea were isolated from pepper seeds. Seed treated with fungicides such as Maneb, Mancozeb, Benomyl and Thiophanate methyl could reduce the infestation levels of tested crops.
 
 
 
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