Subscribe to the gold package and get unlimited access to Shamra Academy
Register a new userChanges in water content and dry matter in grains of some cereal crops during the period from anthesis to physiological maturity
تبدلات وزن الماء و المادة الجافة في حبوب عدد من محاصيل الحبوب من الإزهار و حتى النضج الفيزيولوجي
1510
0 21
0
(
0
)
Added by
Damascus University ورقة بحثية
Publication date
2005
fields
Field Crops
and research's language is
العربية
Created by
Shamra Editor
Ask ChatGPT about the research
أجريت هذه الدراسة على ثلاثة طرز وراثية من القمحيلم (التريتيكالي)، و ستة طرز وراثية من القمح (خمسة من القمح القاسي و واحد من القمح الطري)، في منطقتين زراعيتين مختلفتين: مزرعة بوقا التابعة لكلية الزراعة في جامعة تشرين، و مركز البحوث العلمية الزراعية في جلين بدرعا. تميزت الطرز الوراثية المدروسة بتماثل منحنياتها المتعلقة بوزن الماء في الحبة، و أبدى صنفا القمح القاسي شام 1 و بحوث 5 اضطرابًا بمنحنى وزن الماء خلال الفترة الأولى من الدراسة، في حين كان هذا الاضطراب ملحوظًا لدى أصناف القمح من مجموعة الشام (شام 1، شام 3، شام 5) في موقع جلين . تميزت سلالات القمحيلم بوزن ألف حبة أكبر بالمقارنة مع أصناف القمح المدروسة في كلا الموقعين (بوقا و جلين) و لوحظ وجود علاقة ارتباط قوية بين طول فترة امتلاء الحبوب و وزن الألف حبة، و لكن لوحظ انخفاض في وزن الألف حبة في موقع جلين بالمقارنة مع موقع بوقا بالنسبة لأصناف القمح المدروسة، و ترافق ذلك مع ارتفاع النسبة المئوية للبروتين في الحبوب، و يعزى ذلك إلى ارتفاع درجة الحرارة في هذا الموقع خلال فترة امتلاء الحبوب، و الذي كان له دورًا مهمًا في التأثير في مكونات الحبة.
This experiment was conducted at two ecologically different regions, Boka, and Gellien, using 3 lines of X.triticosecale Wittmack (372, C.187, and C.G.2) and 6 cultivars of wheat (5 of them were triticum durum Cham1, Cham3, Cham5, Bohoth5, and Haurani, and one of triticum aestivum Cham6), to assess the changes in water content and dry matter in the grains during the period from anthesis to physiological maturity .The results showed that all genotypes had the same moisture content curves, whereas it had seemed that the two durum wheat cultivars (Cham1 and Bohoth5) exhibited a disturbance in the moisture development curves in the first region, and the same observation was noticed on (Cham1, Cham3, and Cham5) in the second region. However, triticale lines had a higher test weight of 1000 grain compared with wheat cultivars in the two regions, and there was a positive relationship between grain fill duration and the weight of 1000 grain, whereas, there was a depression in the test weight of wheat cultivars in the second region in comparison with the first one, but it is associated with an increase of protein percentage, and this might be attributed to temperature elevation during grain fill stage.
References used
Ben Amar, F. (1999). Genetic advances in grain yield of Durum wheat under low – rainfall conditions. Rachis 18 (1): 31 – 33
Budak, N. (2000a). Hertability, correlation and genotype X year iteraction of grain yield, test weight and protein content in durum wheat. Turkish Journal of field crops 5 (2): 1111 – 1301
Daynard, T. B., and L. W. Kannenberg. (1976). Relationships between the length of actual and effective grain filling periods and the grain yield of corn. Can. J. Plant Sci. 56:237 – 242
rate research
Read More
The reasearch was carried out during 2009 – 2010 in Al – Hasaka – Amoda - to study
the effect of cattle manure at the rat of 30 ton / ha , and four organic green manure ( Lentil,
Vetch, Faba bean and Barely) on soil content of organic matter and so
me mineral elements
compared with chemical fertilizer 400 kg / ha urea , 83 kg / ha P2O5 and 25 kg / ha K2O .
The manure significantly increased organic matter , phosphorus and potassium
concentrations compared with other fertilizers ( chemical and green fertilizers ) . All green
fertilizers ( Lentil , Vetch , Faba bean and Barely ) significantly increased organic matter ,
nitrogen and potassium concentration compared with the control without using any
fertilizer , the tillage depth ( 0 – 10 ) cm significantly increased soil content of organic
matter and nitrogen compared with deeper tillage ( 25 – 30 ) cm during the two seasons .
The important processes that follow the harvesting of various agricultural crops, especially
the cereal crops, the process of sifting and separation of seeds from impurities, in order to
get rid of the impurities that exist with the seeds in the fi
rst degree, and to get rid of the
distorted and damaged seeds in the second degree.
This study was aimed to study the effect of the sieve holes of a local industrial electric
screening machine in the process of sifting and cleaning the seeds of some cereal crops,
and evaluation the performance of this machine, and then determining the optimal sieve
diameters for the seeds of crops studied and economically important in Syria.
The active part of the machine, called the vibrator, consists of three layers of sieves and
four gutters, the first sieve to get rid of large impurities (gravel, cloths, ...), the second
sieve to extract the very large seeds, the third sieve moves the seeds to the graphite
machine, It produces soft impurities (broken and small seeds).
The second sieve was studied. The results showed that the best sieve of the cumin seeds
with holes (0.8 mm) compared with actually used the sieve (1 mm). The best sieve seeds of
holes (1.25 mm), compared with actually used the sieve (1.40 mm). The best sieve for
local lentil seeds with holes (2 mm), compared with actually used the sieve (2.5 mm). The
best sieve of chickpea seeds with holes (5 mm) compared with actually used the sieve (5.5
mm).
Therefore, it is recommended to use the sieves with the holes shown above to screen the
studied seeds instead of the actual sieves used in the screening factories due to their
inaccuracy in the screening process because the diameter of these holes is not consistent
with the sizes of the studied seeds.
During the season of 2002, samples of olive fruit were taken (Ashrasi type)
from Ninavah horticulture’s station that belongs to the ministry of agriculture
in Iraq. The purpose of this research is to study some physical and chemical
characteristic
s during the growing period, from July until October. Those
characteristics include moisture, ash, oil content, chlorophyll A & B, protein,
pH and carbohydrate, In addition to fruit length, size, weight, radius, and
rigidity. The results showed significant increase in moisture, oil, weight, size
and length of the fruit were studied. Significant reduction was noticed in the
percentages of the protein, carbohydrate, ash and the fruit rigidity. The highest
values of chlorophyll were observed during The month of September. October
considered as the best time to harvest olive fruits for pickle purpose.
An experiment was conducted in Kharabo station which belongs to the
faculty of agriculture, Damascus university during the growing season 2009 !
2010, to evaluate the response of seventeen sorghum genotypes under water
stress conditions during the flowering stage according to the randomized
complete block design (RCBD), with three replicates.
The purpose of this research is to design and realization of an electronic circuitthat is able to control the water level in a tank. The circuit shows a tank water level in decimal numbers and controls the volume of water in the tank. So that when th
e level of water drops below a specific value that is preselected using a probe, the pump water works. When the water level reaches to another limit value, the pump stops working.We used for water level control a container which is made by transparent glass with volume of 15 L. the container is divided in nine levels. In addition to this purpose, because of large applications for realized electronic board, The circuit measures the speed of rotation of DC motorsin a wide range (0001 to 9999) cycles during a chosen period of time that ranges from 1 sec to 110 sec and display the speed of rotation in decimal numbers that appears on four displays. Moreover, the circuit contains a switch reset/start, for display clear and restart of measurement.
This study was carried out on samples of tap water, for several values of distance between the probes, and power supply. We found a quick response in showing levels and high efficiency in performance. We measured the number of special motor cycles for several values of the power supply during 30 s and 60 s, and the relation between the number of cycles and applied voltagewas drawingwe found it a linear relation.
suggested questions
Log in to be able to interact and post comments
comments
Fetching comments
Sign in to be able to follow your search criteria
