Asian Science Citation Index is committed to provide an authoritative, trusted and significant information by the coverage of the most important and influential journals to meet the needs of the global scientific community.  
ASCI Database
308-Lasani Town,
Sargodha Road,
Faisalabad, Pakistan
Fax: +92-41-8815544
Contact Via Web
 
Articles by S.A.A. Fathi
Total Records ( 3 ) for S.A.A. Fathi
  S.A.A. Fathi and G. Nouri-Ganbalani
  The two-spotted spider mite (TSSM), Tetranychus urticae Koch and onion thrips (OT), Thrips tabaci Lindeman, are two serious pests of potato and Orius niger (Wolff) and O. minutus (Linnaeus) are major predators of these pests in the potato fields in Ardabil region. Therefore, we compared the predation potential and fecundity of these predator when they fed on 2nd instar larvae of thrips and female mites on potato leaves in the no-choice and choice experiments in a growth chamber that was set at 24 ± 1 °C, 50 ± 5% RH and 16: 8 h (L:D) photoperiod. In the no-choice tests, O. niger showed lower nymphal mortality percentage, higher fecundity and higher killing rate (km) when fed on 2nd instar larvae of thrips than female mites. O. minutus showed lower nymphal mortality percentage, higher fecundity and higher killing rate (km) on female mites than 2nd instar larvae of thrips. In the choice tests, the number of 2nd instar larvae of thrips consumed by different nymphal instars and the adult pairs of O. niger were significantly higher than the number of female mites consumed. Different nymphal instars and the adult pairs of O. minutus consumed significantly more female mites compare to 2nd instar larvae of thrips. Based on these results it can be concluded that O. niger and O. minutus are effective natural enemies of OT and TSSM in the potato fields, respectively.
  S.A.A. Fathi , G. Nouri-Ganbalani and H. Rafiee-Dastjerdi
  Empoasca decipiens Paoli (Hom.: Cicadellidae) has been causing damage in potato fields of Ardabil region in Iran. There has been an increasing interest in controlling of E. decipiens using resistant cultivars. The resistance of four commonly planted cultivars including Diamant, Agria, Casmos and Omidbakhsh to E. decipiens was compared using some life cycle parameters of this pest in greenhouse at 24±1°C, 50±5% RH and 16:8 h (L:D) photoperiod. Incubation period, development timeof1st, 2ndand 3rd instar larvae were not significantly different on the cultivars studied. Fourth and 5th instar larvae development time and female and male life span of E. decipiens decreased among the cultivars in the order of Diamant >Casmos >Omidbakhsh >Agria. The percentage of larval survival of E. decipiens on Diamant and Casmos were significantly lower than on Omidbakhsh and Agria. Sex ratio of E. decipiens on four cultivars was not significantly different. High correlation coefficients were observed between the density of simple and glandular trichomes with the percentage of larval survival, larval development time, female and male life span of E. decipiens. These results indicated that among the cultivars that were investigated, Diamant and Casmos were resistant and Omidbakhsh was tolerant to E. decipiens damage. The results of this study also confirmed that the density of glandular trichomes may have more affects on the life cycle of E. decipiens than the density of simple trichomes by restricting larvae and adult feeding. These results are useful in an integrated management program of E. decipiens in potato fields.
  A. Asghari , Y. Agayev and S.A.A. Fathi
  Abstract: Karyological study of four Agropyron species (A. desertorum, A. cristatum, A. pectinoforum and A. imbricatum) showed that these species were tetraploid (2n = 4x = 28) with the base number, x = 7. In the studied cells of A. desertrum, 28 chromosomes with 1 B chromosome and satellite on chromosomes 2 and 4 were exist. The number of chromosomes in studied cells of A. cristatum ranged between 28 and 31 without B chromosome and with satellite on chromosome 3 and 5. In the cells of A. imbricatum that studied, 28 to 33 chromosomes with 1 to 3 B chromosomes and satellite on chromosome 7 were exist. The number of chromosomes in studied cells of A. pectinoforum ranged between 28 and 29 and 1 B chromosome and satellite on chromosome 3 were exist. Finally in the studded cells of four species 28-33 chromosomes were exist (the various forms of aneuploid cells). One to three B chromosomes and chromosomes with satellites also observed in these species.
 
© All Rights Reserved Asian Science Citation Index