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Seed Set And Xenia Effects On Grain Iron And Zinc Density In Pearl Millet, Mahalingam Govindaraj Apr 2015

Seed Set And Xenia Effects On Grain Iron And Zinc Density In Pearl Millet, Mahalingam Govindaraj

Mahalingam Govindaraj

Three types of seed samples (selfed, sibbed and open pollinated) can be used for mineral analysis in pearl millet [Pennisetum glaucum (L.) R. Br.] and other cross-pollinated crops. Cost effectiveness and reliability of mineral estimates in these types of seed samples have a direct bearing on breeding efficiency. Three sets of experiments using a diverse range of materials were conducted to examine the potential use of selfed and open pollinated (OP) seed samples for the analysis of grain Fe and Zn density in pearl millet. The results of this study showed that reduction in seed set under selfing, a genotype- …


Is Fortification Or Bio Fortification Of Staple Food Crops Will Offer A Simple Solution To Complex Nutritional Disorder In Developing Countries?, Mahalingam Govindaraj Apr 2015

Is Fortification Or Bio Fortification Of Staple Food Crops Will Offer A Simple Solution To Complex Nutritional Disorder In Developing Countries?, Mahalingam Govindaraj

Mahalingam Govindaraj

Large segment of global populations, especially in developing countries is currently at risk from one or more micronutrient deficiency, so called malnutrition. This could be due to our current food systems are fail to provide enough balanced dietary nutrients to meet all the nutritional requirements of every individual, especially resource-poor women and children in the developing countries. A variety of interventions have been used to address micronutrient malnutrition so far such as pharmaceutical supplementation, industrial fortifications and dietary diversification. However, success of supplementation and fortification in developing countries remains challenges due to poor infrastructure, delivery system, more often it need …


Importance Of Genetic Diversity Assessment In Crop Plants And Its Recent Advances: An Overview Of Its Analytical Perspectives, Mahalingam Govindaraj Jan 2015

Importance Of Genetic Diversity Assessment In Crop Plants And Its Recent Advances: An Overview Of Its Analytical Perspectives, Mahalingam Govindaraj

Mahalingam Govindaraj

The importance of plant genetic diversity (PGD) is now being recognized as a specific area since exploding population with urbanization and decreasing cultivable lands are the critical factors contributing to food insecurity in developing world.Agricultural scientists realized that PGD can be captured and stored in the formof plant genetic resources (PGR) such as gene bank,DNA library, and so forth, in the biorepository which preserve genetic material for long period. However, conserved PGR must be utilized for crop improvement in order to meet future global challenges in relation to food and nutritional security.This paper comprehensively reviews four important areas; (i) the …


Iniadi Pearl Millet Germplasm As A Valuable Genetic Resource For High Grain Iron, Mahalingam Govindaraj Jan 2015

Iniadi Pearl Millet Germplasm As A Valuable Genetic Resource For High Grain Iron, Mahalingam Govindaraj

Mahalingam Govindaraj

Crop biofortification is increasingly being recognized as a cost-effective and sustainable approach to address the widespread micronutrient malnutrition arising from Fe and Zn deficiencies. Pearl millet as a cereal crop species has higher Fe density than all other major cereals. Earlier studies in pearl millet have shown that breeding lines, hybrid parents, improved populations and composites having high Fe and Zn densities were often based largely or entirely on iniadi pearl millet germplasm. In an attempt to identify additional sources of high Fe density in this group of germplasm, 297 accessions were screened using Perl’s Prussian Blue staining, of which …


Grain Iron And Zinc Density In Pearl Millet: Combining Ability, Heterosis And Association With Grain Yield And Grain Size, Mahalingam Govindaraj Dec 2014

Grain Iron And Zinc Density In Pearl Millet: Combining Ability, Heterosis And Association With Grain Yield And Grain Size, Mahalingam Govindaraj

Mahalingam Govindaraj

Genetics of micronutrients and their relationships with grain yield and other traits have a direct bearing on devising effective strategies for breeding biofortified crop cultivars. A line × tester study of 196 hybrids and their 28 parental lines of pearl millet (Pennisetum glaucum (L.) R.Br.) showed large genetic variability for Fe and Zn densities with predominantly additive gene action and no better-parent heterosis. Hybrids with high levels of Fe and Zn densities, involved both parental lines having significant positive general combining ability (GCA), and there were highly significant and high positive correlations between performance per se of parental lines and …


Pearl Millet Breeding Lines Developed At Icrisat:A Reservoir Of Variability And Useful Source, Mahalingam Govindaraj Jan 2014

Pearl Millet Breeding Lines Developed At Icrisat:A Reservoir Of Variability And Useful Source, Mahalingam Govindaraj

Mahalingam Govindaraj

The International Crops Research Institute for the Semi- Arid Tropics (ICRISAT) conducts inter-disciplinary and partnership-based research for the genetic improvement of its mandate crops. During the 1970s and 1980s, the pearl millet improvement at ICRISAT, Patancheru, emphasized on: (i) developing a diverse range of traitspecific composites, based on the germplasm largely from the Western and Central Africa; (ii) improving them by the process of recurrent selection, principally for grain yield and downy mildew (Sclerospora graminicola (Sacc.) Schroet ) resistance; and (iii) developing open-pollinated varieties (OPVs)