Sorghum from Africa and Asia was occupied more than 81% of the total area harvested in the world. However, the most of the soil in these areas are acidic in nature and aluminum has been recognized as a major problem in most of acidic soils. Sorghum is generally not tolerant to high Al saturation in the acid soil. Therefore, some series of experiments were carried out in order to look for the efficient selection and breeding method of Al tolerance in sorghum. Identification of parental germplasm, Al tolerance character and genetic aspects of Al tolerance character were evaluated in this study.
Soybean and cotton exhibit different heliotropic leaf movements during daytime to regulate radiation interception, leaf temperature and transpiration etc. These leaf movements are more conspicuous during drought stress. The objectives of the present experiment were to study different kinds of deleterious and/or adaptive changes in terms of leaf temperature, leaf photosynthesis and transpiration under various irrigation levels in soybean and cotton.