Do you want to publish a course? Click here

The light and temperature effect on the development of a mutated species of Saintpaulia ionantha

تأثير الضوء و الحرارة في تنامي إحدى طفرات نبات البنفسج الافريقي Saintpaulia ionantha

1746   0   5   0 ( 0 )
 Publication date 1998
  fields Biology
and research's language is العربية
 Created by Shamra Editor




Ask ChatGPT about the research

The results of this study showed the important role of the light intensity compared with the light exposure time on coloring the new formed leaves, also this study had showed that the leaves are not affected by the different temperatures, and also that these plants showed a decrease in the different pigment substances in close proportions. Concerning the amount of proteins, the results have shown main differences in the protein bands between the mutated and the natural species, but we have found a decrease in the amount of proteins in the mutated species than in natural species.


Artificial intelligence review:
Research summary
تتناول هذه الدراسة تأثير الضوء ودرجة الحرارة على تطور نوع متحول من نبات البنفسج الأفريقي (Saintpaulia ionantha). أظهرت النتائج دورًا مهمًا لشدة الضوء مقارنة بمدة التعرض للضوء في تلوين الأوراق الجديدة، بينما لم تتأثر الأوراق بدرجات الحرارة المختلفة. كما أظهرت الدراسة انخفاضًا في المواد الصبغية المختلفة بنسب متقاربة. فيما يتعلق بكمية البروتينات، أظهرت النتائج اختلافات رئيسية في أشرطة البروتين بين النوع المتحول والنوع الطبيعي، مع انخفاض في كمية البروتينات في النوع المتحول مقارنة بالنوع الطبيعي. تم تنفيذ التجربة على 800 نبات تحت شروط مختلفة من الإضاءة ودرجات الحرارة، وتم تحليل الصبغات النباتية باستخدام تقنيات مثل HPLC والتحليل الكهربائي. أظهرت النتائج أن شدة الضوء لها تأثير كبير على تلوين الأوراق وتكوين الصبغات النباتية، بينما لم يكن لدرجات الحرارة تأثير كبير على ذلك.
Critical review
دراسة نقدية: تعتبر هذه الدراسة مهمة في فهم تأثير العوامل البيئية على تطور النباتات، ولكن هناك بعض النقاط التي يمكن تحسينها. أولاً، لم يتم توضيح كيفية تأثير شدة الضوء على العمليات الفسيولوجية داخل النبات بشكل دقيق. ثانيًا، كان من الممكن توسيع نطاق الدراسة ليشمل أنواعًا أخرى من النباتات لمقارنة النتائج. ثالثًا، لم يتم التطرق إلى تأثير العوامل البيئية الأخرى مثل الرطوبة والتربة، والتي قد تكون لها تأثيرات مهمة أيضًا. بشكل عام، الدراسة تقدم معلومات قيمة ولكن تحتاج إلى مزيد من التعمق والتوسع في بعض الجوانب.
Questions related to the research
  1. ما هو الدور الذي يلعبه الضوء في تلوين أوراق نبات البنفسج الأفريقي المتحول؟

    أظهرت الدراسة أن شدة الضوء لها دور مهم في تلوين الأوراق الجديدة لنبات البنفسج الأفريقي المتحول، مقارنة بمدة التعرض للضوء.

  2. هل تأثرت أوراق النبات بدرجات الحرارة المختلفة؟

    لا، أظهرت الدراسة أن أوراق النبات لم تتأثر بدرجات الحرارة المختلفة.

  3. ما هي الفروقات في كمية البروتينات بين النوع المتحول والنوع الطبيعي من النبات؟

    أظهرت النتائج انخفاضًا في كمية البروتينات في النوع المتحول مقارنة بالنوع الطبيعي، مع وجود اختلافات رئيسية في أشرطة البروتين بين النوعين.

  4. ما هي التقنيات المستخدمة في تحليل الصبغات النباتية في هذه الدراسة؟

    تم استخدام تقنيات مثل HPLC والتحليل الكهربائي لتحليل الصبغات النباتية في هذه الدراسة.


References used
Bohmer. B.; (١٩٩٠): Schadlinge an Saintpaulia. Gartnerborse Gartenwelt
Jungnickel, F. und Gliemerothe ( ١٩٨٦ ) : In vitro - Depots vegetativ vermehrter Blútenpflanzen. wiss. ztschr. Fsu Jena, Math. - Natur wiss. R
rate research

Read More

Carnation is one of the most important crop for cut flowers not only in Syria but all over the world. The producers in Syria and in other countries are suffering during the seasons of hot temperature from dwarfing of the plants and the production of small flowers. The work conducted here was to investigate the effect of high temperature on flower development and morphology.
The effect of temperature on the development of the predator Hippodamia variegata (Coleoptera:Coccinellidae) reared on the green peach aphid Myzus persicae Sulzer (Homoptera:Aphididae) was determined at five constant temperatures (15, 20, 25, 30 a nd 35)°C under laboratory conditions. The present study was conducted at Latakia Agricultural Research Center during 2015 and 2016. This study aimed to determine the impact of temperature on the development of the predator H. variegata to identify the suitable temperature for rearing this predator. The duration (days) and survival (%) were measured for this predator. Results showed that temperature had a significant effect on the development of H. variegata immature stages, whereas the development time from larvae to adult decreased with increasing temperature at thermal range (15-35)°C. The longest larval developmental duration was 24.84 days at 15°C, and the shortest duration was 4 days at 35°C. Also, the shortest pupal duration was one day at 35°C and the longest period was 9.84 days at 15°C. The lowest developmental time from eggs hatching to emergence of adults was 6 days at 35°C, while the longest developmental time was 36.84 days at 15°C. Also the ratio of larval survival was affected by temperature, this ratio was (26%, 52%, 77%, 34%, 4%) at (15, 20, 25, 30 and 35)°C respectively. The results of statistical analysis showed that there were significant differences between the five constant temperatures in all studied biological characteristics, and the temperature 25°C was suitable for a successful rearing of the predator H. variegata.
The effect of different concentrations of nitrate and phosphate and soil extract on the total growth and chemical composition to the green algae Chorella vulgaris isolated from some localaquatic habitats had studied in this research, at three type of temperature (30 , 25, 20), the maximum total growth reached up to 4.66 Cell/h and the lowest duplicated time was 1.55 h at temperature 25ºC and at concentration of nitrate 1 g/L , 0.05 g/L of phosphate, and 10/100 mL of soil solution , while the number of cells reached to 59423,61 cell/mL at the day 22 of cultivation. The chemical composition differed by the changing of temperature and nutrient medium composition , while the maximum protein content reached to 48.36 % at the maximum concentration of nutrients and 25 ºC of temperature , the maximal concentration of lipid was 19,78 % at temperature 25ºC and concentration of nitrate 0.1 g/L and 0.01 of phosphate and 6/100 mL of soil solution , the concentration of carbohydrates were the lowest where the maximal ratio was 17.41 % at temperature 20ºC .
Preterm birth is the leading cause of death for children under one year of age, and the main reason for the child to enter the incubator. Despite medical advances and technical winning in the care of premature infants., but they are exposed in Nurser y Ward for environment stimuli not compatible with their level of developmental and evolutionary such as high levels of light and the noise that exceed the recommended levels in Nursery Ward. This leads to stress reactions by premature immature systems. demonstrating in one of their faces instability in vital indicators especially heart rate and oxygenation which may submit him for a short or long-term injuries . Aim of the study: Determine the effect of reducing the level of light and noise intensity in environment of Nursery Ward on the heart rate and oxygenation for premature infants. Materials & Methods: This true experimental design study of before and after on a sample of 30 premature acceptable in the Nursery Ward in Albasel Hospital in Tartous. they were selected in simple random way. Data were collected using a list to record demographic and health information for the mother and premature. reads of light-meter and noise-meter sitting beside the premature incubator, and reads of Oxy-meter connected to the premature wrist. was taken to every 5 minutes in each phase of the four phases, 60 minutes for each one, and conducted in the same day.1) Non intervention phase. 2) reduce light Intensity without noise Intensity reduction phase.3) reduce noise Intensity without light Intensity reduction phase.4) reduce light and noise Intensity together phase. These data were collected and analyzed using appropriate statistical programs. Results: This study showed a significant decrease in the mean of heart rate and a significant increase in the mean of oxygenation in the last three phases, compared with means in the first phase. This reduction and increase in the means was larger significantly in the fourth stage compared with the second and third phases. That because reducing light and noise will reduce its physiological stress to premature thus lower the pulse rate and increasing oxygenation. We can thus reduce the use of light and noise measures to improve the care environment for premature.

suggested questions

comments
Fetching comments Fetching comments
Sign in to be able to follow your search criteria
mircosoft-partner

هل ترغب بارسال اشعارات عن اخر التحديثات في شمرا-اكاديميا