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Advancement of physiological strategies for Crop Improvement against abiotic stresses

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Title Advancement of physiological strategies for Crop Improvement against abiotic stresses
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Creator Anita Mann, Satish Kumar Sanwal and Ashwani Kumar
 
Subject Plant physiology, abiotic stress
 
Description Not Available
According to UNEP Report, globally some 20% of agricultural land under irrigation has become salt affected. In India, salt-affected soils occupy an area of about 6.73 million ha of which saline and sodic soils constitute roughly 40 and 60%, respectively. Several inorganic minerals are essential for plant growth and these are usually obtained by roots from the soil. The agricultural scenario is getting worse due to various abiotic stress factors. Since the agricultural land is limited and resistant varieties of crop plants are not available, so there is an emergent need to make the crop plants suitable to this changing scenario. In this situation, one of the ways is to identify more and more resistant varieties to make the crop plants sustain their growth and productivity in such challenging environment. Apart from the goal of genetically improving the stress tolerance of crop plants, abiotic stress tolerance research requires an understanding of subjects ranging from gene regulation, signal transduction to ion transport, and mineral nutrition involving responses to cellular osmotic and ionic stresses and their consequent secondary stresses (e.g. oxidative stress). Availability of minerals in the soil is determined by the physical and chemical characteristics of the soil. For crops it is essential to match nutrient supply to demand throughout the growth season to obtain the maximum yield. Thus soil nutrient profiling can be used as agricultural indicators of crop nutrient status and the potential for fertilizer leaching losses. Although there are large numbers of reports in the literature mainly dealing with water relations, photosynthesis and accumulation of various inorganic ions and organic metabolites related to salinity, the metabolic sites at which salt stress damages plants and conversely the adaptive mechanisms utilized by plants to survive salinity stress are still not well understood. This is due to fact that there are no well-defined plant indicators for salinity tolerance that could practically be used enhancing salinity tolerance in important crops Thus, in need of time, this training was proposed to review the possible strategies to find out the mechanisms and possible indicators underlying in providing tolerance which can be used in crop improvement programmes.
ICAR
 
Date 2018-09-11T08:44:11Z
2018-09-11T08:44:11Z
2018-09-20
 
Type Training Manual
 
Identifier Mann A., Sanwal S. K. and Kumar A. 2018. Advancement of physiological strategies for Crop Improvement against abiotic stresses. Training Manual, ICAR- Central Soil Salinity Research Institute, Karnal, Haryana, India, pg 200
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http://krishi.icar.gov.in/jspui/handle/123456789/6692
 
Language English
 
Relation Not Available;
 
Publisher ICAR-Central Soil Salinity Research Institute, Karnal