Food Security in Nutrient-Stressed Environments: Exploiting Plants’ Genetic Capabilities

Front Matter....Pages i-vii
Welcome address....Pages 1-3
Government of Japan Project activities at ICRISAT 1984–1999....Pages 5-8
Physiological traits for crop yield improvement in low N and P environments....Pages 9-23
Prospects for using conventional techniques and molecular biological tools to enhance performance of ‘orphan’ crop plants on soils low in available phosphorus....Pages 25-36
Ex-ante impact assessment and economic analysis of breeding for nutrient efficiency and alternate strategies, a conceptual model and research issues: A socio-economist’s view....Pages 37-42
Breeding for low-nutrient environments: Is it sustainable?....Pages 43-46
Breeding for low-nutrient environments....Pages 47-57
Genetic adaptation of crop plants to low-nutrient environments: morphological and ecophysiological characteristics of adaptation....Pages 59-66
Genotypic variability and physiological characteristics of crop plants adapted to low-nutrient environments....Pages 67-79
Physiological adaptations for nitrogen use efficiency in sorghum....Pages 81-90
Photosynthesized carbon translocation and distribution of crops adapted to low-nutrient environments....Pages 91-101
Varietal differences in root growth as related to nitrogen uptake by sorghum plants in low-nitrogen environment....Pages 103-110
Genotypic variability in phosphorus solubilizing activity of root exudates by pigeonpea grown in low-nutrient environments....Pages 111-121
Root cell-wall properties are proposed to contribute to phosphorus (P) mobilization by groundnut and pigeonpea....Pages 123-131
Role of soil microorganisms in improving P nutrition of plants....Pages 133-143
Phosphorus use efficiency as related to sources of P fertilizers, rainfall, soil, crop management, and genotypes in the West African semi-arid tropics....Pages 145-154
Modelling root-induced solubilization of nutrients....Pages 155-163
Scope for genetic manipulation of mineral acquisition in chickpea....Pages 165-176
Aluminum tolerance in nodulated N 2 -fixing legumes species native to two contrasting savanna sites....Pages 177-182
Effect of rock phosphate and superphosphate fertilizer on the productivity of maize var. Bisma....Pages 183-187
Candidate mechanisms....Pages 189-191
Assessing germplasm collections for traits useful in plant nutrition....Pages 193-200
Root exudates as mediators of mineral acquisition in low-nutrient environments....Pages 201-213
Genetic control of root exudation....Pages 215-226
Transporter genes to enhance nutrient uptake: Opportunities and challenges....Pages 227-234
The phosphate uptake mechanism....Pages 235-244
Breeding for better symbiosis....Pages 245-260
Genetic approaches for manipulating crop plants to enhance root exudation and access low nutrients in the rhizosphere....Pages 261-265
Breeding crops for enhanced micronutrient content....Pages 267-276
Appropriate farm management practices for alleviating N and P deficiencies in low-nutrient soils of the tropics....Pages 277-288
Farmer preferences and legume intensification for low nutrient environments....Pages 289-300
Nutrient balances: A guide to improving the sorghum- and groundnut-based dryland cropping systems in semi-arid tropical India....Pages 301-311
Preplant moisture and fertility conditions as indicators of high and stable yields in rainfed cropping systems....Pages 313-317
Role of modelling in improving nutrient efficiency in cropping systems....Pages 319-329
Combining genetic improvement with natural resource management....Pages 331-335
Closing remarks....Pages 337-338
Future research needs, priorities, and strategies....Pages 339-340
Back Matter....Pages 341-344