BROWSE

AUTHOR PROFILE

Browsing by Author Osman, Samira A.

Jump to: 0-9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
or enter first few letters:  
Showing results 1 to 3 of 3
  • BB

  • DNA barcoding of different Triticum species

    • Authors: Osman, Samira A.;  Advisor: -;  Participants: Ramadan, Walaa A. (2019)

  • The phylogenetic tree obtained from both nucleotide and amino acid sequences divided the 20 Triticum species into two groups, A and B. Group A represented the diploid Triticum species. Group B was divided into two subgroup, I and II. Subgroup I represented the hexaploid Triticum species and subgroup II represented the tetraploid species. The matK gene sequence has a critical role in discriminating the closely related Triticum species. So these sequences could be used as a DNA barcode for detecting the evolutionary history of Triticum species.
  • BB

  • Karyotype variation and biochemical analysis of five Vicia species

    • Authors: Osman, Samira A.;  Advisor: -;  Participants: Ali, Hoda B.; El-Ashry, Zeinab M.; El-Khodary, Soheir E. (2020)

  • From karyotype of studied Vicia species chromosomes, it was found that V. macrocarpa, V. sativa, and V. faba had six pairs of chromosome (2n = 12) while V. narbonensis and V. ervilia had seven pairs of chromosome (2n = 14). The most related species was found between V. ervilia and V. narbonensis (77.8%) depending on seed soluble protein similarity level, but between V. narbonensis and V. macrocarpa was 70.0% depending on seed non-soluble protein similarity level, while between V. ervilia and V. narbonensis, the most related species was 69.0% depending on collective data of both soluble and non-soluble seed storage protein.
  • BB

  • The influence of He-Ne laser on agro-morphological criteria, ISSR marker and SDS-PAGE of Moringa oleifera

    • Authors: Osman, Samira A.;  Advisor: -;  Participants: Rayan, Walaa A. (2020)

  • Most agro-morphological criteria increased especially with wetted seed group pre-laser treatments (25 min). SDS-PAGE and ISSR profiles showed changes which include the absence of some bands and the appearance of few novel bands. ISSR markers showed a change in band number in all investigated samples with a total number of 172 bands. The polymorphic bands were 91 bands with 19 unique bands. The average mean percentage of polymorphism was recorded 52.91% at samples treated with a laser at different times. Wetted seed treatment for 25 min recorded 40 bands as new bands. Genetic template stability (GTS) values were recorded in all treatments. The lowest GTS % was recorded 76.74 at 25 min ...