Document Details

Document Type : Thesis 
Document Title :
Physiological Studies on two Varieties of Sorghum bicolor (L.) and the Effect of Calcium in the Plant Tolerance to Salinity
دراسة فسيولوجية لصنفين من الذرة البيضاء مع تأثير الكالسيوم على قدرة النبات لتحمل الملوحة
 
Subject : Physiological Studies on two Varieties of Sorghum bicolor (L.) and the Effect of Calcium in the Plant Tolerance to Salinity 
Document Language : Arabic 
Abstract : High salinity stress is the most environmental stress which impairs crop production. Understanding the mechanism of stress tolerance is important for crop improvement. In order to determine the physiological criteria of early selection of salt tolerance corn cultivars, effects of various doses of NaCl on morphological and alteration of shoot and root systems of two different corn cultivars (white and red) were evaluated. Plants were submitted to four levels of NaCl (0, 50, 75 and 100 mmol).Growth reduction (shoot and root length, fresh and dry weights) is recorded as a mean morphological effect of high doses of NaCl which in turn due to many biochemical mechanisms of the plants. Accumulations of total soluble carbohydrates and total soluble proteins as well as total free amino acids were markedly increased in shoot and root systems of the two corn stressed cultivars. Furthermore, a significant accumulation in sodium ions was observed in the red corn shoots and roots exposed to different salinity levels as being compared to those of the white cultivar. However the levels of the other estimated ions (potassium, calcium and phosphorus) were markedly declined through the experimental period. Proline and glycine betaine seems to be not involved in salt tolerance of these plants. These results indicated that the red cultivar is more salt tolerant than the white cultivar 
Supervisor : Prof.Dr.Salih Ali Ba-Zaid 
Thesis Type : Master Thesis 
Publishing Year : 1432 AH
2011 AD 
Number Of Pages : 144 
Added Date : Sunday, July 3, 2011 

Researchers

Researcher Name (Arabic)Researcher Name (English)Researcher TypeDr GradeEmail
نادية سفر الشمرانيAl-Shamrani, Nadiah SafarInvestigatorMasterNadiah_2222@hotmail.com

Files

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 29888.pdf pdf 

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