gehan.salim1

Jehan Mohamed Mohamed Salem

استاذ مساعد - استاذ مساعد

كلية العلوم

العنوان: سوهاج - مدينة ناصر

7

إعجاب
6 0 2 9 1 0 288 207
93

أضيف حديثا
  • المقررات الدراسية 6
  • ملحقات المقررات الدراسية 0
  • واجبات المقررات الدراسية 2
  • المنشورات و المؤلفات 9
  • ساعات مكتبية 1
  • الاعلانات 0
  • عدد الملفات المرفوعه 148
  • كل التنزيلات 685
  • «
  • 1
  • »

Effect of anti-ethylene compounds on isoenzyme patterns and genome stability during long term culture of Moringa oleifera

2018 | الكلمات المفتاحية micropropagation, Moringa, Molecular markers, Isoenzymes, Gene expression, anti-ethylene,
Effect of anti-ethylene compounds on isoenzyme patterns and genome stability during long term culture of Moringa oleifera
Multiplication of Moringa oleifera shoots on MS medium supplemented with 2.5 μM BAP for 3 weeks resulted in shoot vitrification which led to chlorosis, retardation of shoot formation, reduction in shoot length, necrosis of shoot tips and formation of friable calli on the base of cultured explants. Vitrification symptoms decreased when MS medium containing 2.5 μM BAP in combination with ... إقراء المزيد

In vitro propagation, microtuberization, and molecular characterization of three potato cultivars

2017 | الكلمات المفتاحية auxins, cytokinins, Gene expression, micropropagation, RAPD, Solanum nigruom,
In vitro propagation, microtuberization, and molecular characterization of three potato cultivars
Sprouts of potato tubers were excised from the three potato cultivars Agria, Hermes, and Spunta, sterilized and subjected to shoot formation and propagation on Murashige and Skoog (MS) medium supplemented with 1 mg dm-3 6-benzylaminopurine (BAP) + 0.5 mg dm-3gibberellic acid. Shoots were rooted on MS medium supplemented with 1 mg dm-3 indole-3-butyric acid. To increase shoot vigour prior tuber ... إقراء المزيد

Rise Potassium Content of the Medium Improved Survival, Multiplication, Growth and Scav

2017 | الكلمات المفتاحية polyvinyl pyrrolidon, PVP, antioxidant enzymes, sodium potassium pump, Solanum tuberosum,
Rise Potassium Content of the Medium Improved Survival, Multiplication, Growth and Scav
In _VITRO _grown potato cultivars shoots were used to understand ….. how polyvinyl pyrrolidone (PVP) and three levels of potassium interact with two levels of salinity to determine Na+ and K+ contents, and antioxidant enzyme activities leading to control survival, multiplication and growth of cultured plant shoots. Explant survival and number of regenerants/explant decreased with increase of NaCl concentration but ... إقراء المزيد

Differential responses of esterase isoenzyme of peanut to salinity and drought as influenced by salicylic acid

2017 | الكلمات المفتاحية Arachis hypogaea, seed germination, salicylic acid, esterase isoenzyme, polyethylene glycol, NaCl,
Differential responses of esterase isoenzyme of peanut to salinity and drought as influenced by salicylic acid
The effect of salinity, drought and salicylic acid on growth and esterase expression of peanut plants were studied. Seeds of peanut were able to germinate even under relatively high concentration of NaCl (157.5 mM) or PEG (25%). In general, seedling growth was less tolerant to salt stress than vegetative growth stage of peanut plants grown in hydroponic culture containing NaCl, ... إقراء المزيد

Shoot Regeneration and Isoenzyme Expression of Moringa oleifera L. under the influence of salt stress

2017 | الكلمات المفتاحية
Shoot Regeneration and Isoenzyme Expression of Moringa oleifera L. under the influence of salt stress
Shoot regeneration and isoenzyme expression of Moringa oleifera L. under the influence of cytokinin type and different concentrations of NaCl were studied. Cotyledonary nodal segments obtained from in vitro grown seedlings (initial culture) and nodal segments obtained from their regenerants (first subculture) were subjected to shoot formation on MS medium supplemented with 0.56 mg/l BAP or KIN, for three weeks ... إقراء المزيد

IN VITRO PROPAGATION OF MORINGA OLEIFERA L. UNDER SALINITY AND VENTILATION CONDITIONS

2016 | الكلمات المفتاحية vitrification, Ventilation, salinity, micropropagation, Moringa oleifera L,
IN VITRO PROPAGATION OF MORINGA OLEIFERA L. UNDER SALINITY AND VENTILATION CONDITIONS
Moringa oleifera is a fast growing tree under field conditions. A micropropagation protocol of M. oleifera was established, and effects of salinity and ventilation on fast growing cultured plant materials were studied. Efficient shoot formation and multiplication were obtained when nodal or shoot tip explants were cultured on MS medium supplemented with 2.5 μM 6-benzylaminopurine (BAP) at mild ventilation conditions. ... إقراء المزيد

Improvement of in vitro propagation of jojoba by low concentrations of NaCl or mannitol

2016 | الكلمات المفتاحية micropropagation, NaCl, mannitol, jojoba, Ahmed M. Hassanein, Jehan M. S,
Improvement of in vitro propagation of jojoba by low concentrations of NaCl or mannitol
This work was done to improve our understanding about the effect of growth regulators on micropropagation and gene expression of stress tolerant jojoba plant and how they were influenced by the presence of different stress agents. Genetic variation of plants obtained from seeds of jojoba, was checked using RAPD technique. The registered genetic variation was too high and to avoid ... إقراء المزيد

Hormonal Requirements Trigger Different Organogenic Pathways on Tomato Nodal Explants

2013 | الكلمات المفتاحية Growth Regulators, Nodal Segment, Organogenesis, Tissue Culture, Tomato,
Hormonal Requirements Trigger Different Organogenic Pathways on Tomato Nodal Explants
In this work, nodal-disk segments (4 - 6 mm in diameter × 5 - 6 mm in length) were obtained from established shoot culture, resulted from disinfected tomato seedlings, and they were suitable to induce different organogenic pathway under the influence of specific hormonal treatment. Application of BAP (1 - 2.5 mg/l) alone or in combination of 0.5 mg/l NAA ... إقراء المزيد

Study of antioxidant enzymes associated different abiotic stresses during seed germination of four sorghum cultivars and their genetic relationship using RAPD and ISSR

| الكلمات المفتاحية antioxidant enzymes, RAPD, ISSR, Sorghum, salinity, drought stress, temperature stress,
Study of antioxidant enzymes associated different abiotic stresses during seed germination of four sorghum cultivars and their genetic relationship using RAPD and ISSR
In this work, the ability of different sorghum cultivars to germinate under the influence of different environmental conditions was investigated. Cultivars G15 and Sh305 expressed higher percentages of seed germination and seedlings growth than those of Dorado and Sh306 cultivars under the influence of relatively high temperature and concentration of PEG or NaCl. In comparison to control, extremism in temperature, ... إقراء المزيد

  • «
  • 1
  • »