scholarly journals Physiological mechanism of growth retardation in rice seedlings as affected by low temperture.

1982 ◽  
Vol 51 (1) ◽  
pp. 82-88 ◽  
Author(s):  
Nobuyuki KABAKI ◽  
Tadakatsu YONEYAMA ◽  
Koichi TAJIMA
Keyword(s):  
Growth Retardation ◽  
Physiological Mechanism ◽  
Rice Seedlings ◽  
Mechanism Of Growth

Mechanism of growth retardation of the adenocarcinoma EO 771

1987 ◽  
Vol 26 (2) ◽  
pp. 125-141 ◽  
Author(s):  
I. D. Bassukas ◽  
B. Maurer-Schultze
Keyword(s):  
Growth Retardation ◽  
Mechanism Of Growth

scholarly journals Effect of Root Restriction on the Growth, Photosynthesis Rate, and Source and Sink Relationship of Chilli (Capsicum annuum L.) Grown in Soilless Culture

2020 ◽  
Vol 2020 ◽  
pp. 1-14
Author(s):  
Nurul Idayu Zakaria ◽  
Mohd Razi Ismail ◽  
Yahya Awang ◽  
Puteri Edaroyati Megat Wahab ◽  
Zulkarami Berahim
Keyword(s):  
Plant Growth ◽  
Total Yield ◽  
Physiological Mechanism ◽  
Fruit Production ◽  
Photosynthesis Rate ◽  
Growth And Yield ◽  
Soilless Culture ◽  
Growth Reduction ◽  
Root Restriction ◽  
Mechanism Of Growth

Chilli (Capsicum annum L.) plant is a high economic value vegetable in Malaysia, cultivated in soilless culture containers. In soilless culture, the adoption of small container sizes to optimize the volume of the growing substrate could potentially reduce the production cost, but will lead to a reduction of plant growth and yield. By understanding the physiological mechanism of the growth reduction, several potential measures could be adopted to improve yield under restricted root conditions. The mechanism of growth reduction of plants subjected to root restriction remains unclear. This study was conducted to determine the physiological mechanism of growth reduction of root-restricted chilli plants grown in polyvinyl-chloride (PVC) column of two different volumes, 2392 cm3 (root-restricted) and 9570 cm3 (control) in soilless culture. Root restriction affected plant growth, physiological process, and yield of chilli plants. Root restriction reduced the photosynthesis rate and photochemical activity of PSII, and increased relative chlorophyll content. Limited root growth in root restriction caused an accumulation of high levels of sucrose in the stem and suggested a transition of the stem as a major sink organ for photoassimilate. Growth reduction in root restriction was not related to limited carbohydrate production, but due to the low sink demand from the roots. Reduction of the total yield per plant about, 23% in root restriction was concomitant, with a slightly increased harvest index which reflected an increased photoassimilate partitioning to the fruit production and suggested more efficient fruits production in the given small plant size of root restriction.

scholarly journals Bone maturation in girls with Turner's syndrome

1998 ◽  
pp. 59-62 ◽  
Author(s):  
L Even ◽  
V Bronstein ◽  
Z Hochberg
Keyword(s):  
Short Stature ◽  
Growth Retardation ◽  
Bone Dysplasia ◽  
Bone Age ◽  
Carpal Bones ◽  
Turner's Syndrome ◽  
Turner’S Syndrome ◽  
Bone Maturation ◽  
Mechanism Of Growth ◽  
Normal Controls

The mechanism of growth retardation in Turner's syndrome has not been resolved. It is often referred to as a bone dysplasia, although endocrine derangement has not been ruled out. The present study was undertaken to evaluate the maturation of individual bones of the hand and wrist in girls with Turner's syndrome and thereby obtain information which may aid in elaborating the possible mechanism of the growth retardation in girls with Turner's syndrome. Hand and wrist films of 24 girls with Turner's syndrome, 11 normal girls with short stature and 23 normal controls were evaluated, using the references of Greulich and Pyle. Each bone or epiphysis was given an individual 'age'. During childhood the Turner patients showed the greatest delay in bone age of the phalangeal bones while the least delayed were the radius and ulna (long bones) and metacarpals. The carpal bones showed intermediate retardation. This pattern and extent of maturational retardation was clearly different from that of the short stature normal group, who showed uniform retardation of all bones. During adolescence, the phalangeal bones were further retarded and the carpal bones showed a moderate retardation. The unique profile of bone maturation in Turner's syndrome suggests an insult to chondroplasia, which may be related to estrogen deficiency or to an as yet undetermined endocrine or paracrine derangement.

Mechanism of Growth Retardation following Chronic Administration of β-Adrenoceptor Antagonists to Developing Rats

1991 ◽  
Vol 19 (4) ◽  
pp. 296-304
Author(s):  
J.A. Paraskevopoulos ◽  
P.E. Karayannacos ◽  
I. Dontas ◽  
D. Kotsarelis ◽  
S. Drouva ◽  
...  
Keyword(s):  
Growth Retardation ◽  
Chronic Administration ◽  
Mechanism Of Growth

Obesity and adiposity: the culprit of dietary protein efficacy

2020 ◽  
Vol 134 (4) ◽  
pp. 389-401
Author(s):  
Carla El-Mallah ◽  
Omar Obeid
Keyword(s):  
Food Intake ◽  
Behavioural Change ◽  
Physiological Mechanism ◽  
Short Term ◽  
The Past ◽  
Body Adiposity ◽  
Reduce Sugar ◽  
Eye Opening ◽  
Potential Strategy ◽  
Limitations And Exceptions

Abstract Obesity and increased body adiposity have been alarmingly increasing over the past decades and have been linked to a rise in food intake. Many dietary restrictive approaches aiming at reducing weight have resulted in contradictory results. Additionally, some policies to reduce sugar or fat intake were not able to decrease the surge of obesity. This suggests that food intake is controlled by a physiological mechanism and that any behavioural change only leads to a short-term success. Several hypotheses have been postulated, and many of them have been rejected due to some limitations and exceptions. The present review aims at presenting a new theory behind the regulation of energy intake, therefore providing an eye-opening field for energy balance and a potential strategy for obesity management.

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