Broadening the Genetic Base of Grain Cereals by Mohar Singh, Sandeep Kumar PDF

By Mohar Singh, Sandeep Kumar

ISBN-10: 8132236114

ISBN-13: 9788132236115

ISBN-10: 8132236130

ISBN-13: 9788132236139

This booklet bargains entire insurance of significant grain cereals together with their foundation and distribution, crop gene pool, point of variety, construction constraints, features of significance for genetic base widening, crop development methodologies, genome mapping, genomics for breeding, and destiny techniques. The chapters, contributed by means of eminent crop researchers from worldwide, offer infrequent insights into the crop-specific constraints and clients drawing from their mammoth event. As such, the e-book bargains an important resource of knowledge for grain cereals scientists, lecturers, scholars, coverage planners and developmental specialists alike.

Grain cereals, which contain rice, wheat, maize, barley, oats, sorghum and millets, are participants of the grass kinfolk. those vegetation are important to human meals, because of their roles as staple nutrients vegetation in several elements of the globe. a few of them are wealthy resources of carbohydrates, which offer strength, whereas others are vital assets of minerals, supplementations and proteins, as well as their medicinal houses. In such a lot cereals, the prevailing variability between elite germplasm has been exploited to realize a fascinating point of productiveness. although, to make extra breakthroughs in improving yield and bettering balance in destiny crop cultivars, new resources of genes/alleles have to be pointed out in wild/weedy species and included into the cultivated kinds. even though there were many courses on a variety of elements of grain cereal development within the contemporary prior, thus far this crucial info has remained scattered between various periodicals.

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Extra info for Broadening the Genetic Base of Grain Cereals

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8 Breeding Progress Development and identification of high-yielding genotypes with wide adaptation and resistance to biotic and abiotic stresses remain the top priorities of the wheat breeding programs. There are different approaches of determining the breeding progress or the rate of genetic gain for grain yield and other traits. Some studies use yield of histori- Fig. 3 Area, production, and yield of wheat in Syria, 1961–2010 (FAOSTAT 2014) 2 Wheat cal genotypes grown in the same environment, while others have used mean yield to examine progress over time in highly productive environments.

In addition to grain yield, significant progress has been made in developing resistant wheat germplasm to diseases and pests ensuring that developing and deploying genetically resistant varieties adapted to target growing environments are the best economical and environmentally friendly strategy for controlling rust diseases of wheat particularly for resource poor farmers. However, because of the coevolution of the host and pathogen, the deployment of individual resistance genes leads to the emergence of new virulent pathogen mutants, and hence the “boom and bust cycle” of cultivar performance continues.

The most common way of producing hexaploid synthetic wheat which is also called primary synthetics (2n = 6x = 42, AABBDD) is by crossing the T. turgidum ssp. durum (2n = 4x = 28, AABB) with Ae. tauschii (2n 2x = 14, DD) (Mujeeb-Kazi and Hettel 1995). Although most of the synthetic wheat lines are agronomically inferior to modern cultivars, they possess superior genes for both monogenic and polygenic traits. These germplasm are novel sources of resistance genes against biotic and abiotic stresses for wheat production (van Ginkel and Ogbonnaya 2007).

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Broadening the Genetic Base of Grain Cereals by Mohar Singh, Sandeep Kumar

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