Document Details

Document Type : Article In Journal 
Document Title :
Effect of Light Intensity and Temperature on the PhotoSynthesis of Shaded and Unshaded Native Sorghum
تأثير شدة الإضاءة ودرجات الحرارة على التمثيل الضوئي للذرة الرفيعة المحلية في الضخ والظل
 
Document Language : English 
Abstract : Seed of an indigenous variety of sorghum from Jizan were grown in plastic pots. After germ'ination and thinning half of the pots were transferred to30% shade and the other half continued to be in the open sun. Apparent photosynthesis (AP) was measured at heading on both groups of plants at five light intensities (12, 22, 27,30 and 40 K Lux) and three tempeIature levels (25, 35 and 45°C). Total dry weight and grain yield were higher for the open sun plants, while harvest index (HI) was lower than shade plants. Leaf area, however, was almost equal for both groups. AP declined with the increase in temperature, while it increased with the increase of light intensity. AP of shade plants remained always lower than open sun plants. This explains the reduction in biomass and grain yield of shade plants. Apparent photosynthesis (AP) could be taken as criteria for evaluating the adaptation of crop plants to environmental stresses such as temperature and light to be used for breeding adapted varieties. 
ISSN : 1319-1039 
Journal Name : Meteorology, Environment and Arid Land Agriculture Sciences Journal 
Volume : 1 
Issue Number : 1 
Publishing Year : 1410 AH
1990 AD 
Article Type : Article 
Added Date : Wednesday, March 21, 2012 

Researchers

Researcher Name (Arabic)Researcher Name (English)Researcher TypeDr GradeEmail
حبيب الرحمن ميانMIAN, HABIBUL-RAHMAN InvestigatorDoctorate 

Files

File NameTypeDescription
 32684.pdf pdf 

Back To Researches Page