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Amaranthus: A Promising Crop of Future (Hardcover, 1st ed. 2016)
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Amaranthus: A Promising Crop of Future (Hardcover, 1st ed. 2016)
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This book serves the larger community of plant researchers working
on the taxonomy, species delimitation, phylogeny, and biogeography
of pseudo-cereals, with a special emphasis on amaranths. It also
provides extensive information on the nutritive value of
underutilized pseudo-cereals, the goal being to broaden the
vegetable list. Amaranthus is a cosmopolitan genus of annual or
short-lived perennial plants. Most of the species are summer annual
weeds and are commonly referred to as pigweed. Only a few are
cultivated as vitamin-rich vegetables and ornamentals. The
protein-rich seeds of a handful of species, known as grain
amaranths, are consumed as pseudo-cereals. Amaranthusmanifests
considerable morphological diversity among and even within certain
species, and there is no general agreement on the taxonomy or
number of species. Currently the genus Amaranthus is believed to
include three recognized subgenera and 70 species. Amatanthus is
considered to potentially offer an alternative crop in temperate
and tropical climate. The classification of amaranths is ambiguous
due to the lack of discrete and quantitative species-defining
characteristics and the wide range of phenotypic plasticity, as
well as introgression and hybridization involving weedy and crop
species. It is a known fact that both vegetable and grain amaranths
have evolved from their respective weed progenitors. There are more
than 180 different weed species that are herbicide-resistant, and
amaranths are considered to be leading members of the resistant
biotypes. Amaranth species provide ample scope for investigating
herbicide resistance mechanisms. Amaranths also show variability in
terms of their mating behavior and germplasm, adaptability to
different growing conditions, and wide range of variability in
sexual systems, from monoecy to dioecy. A solid grasp of these
parameters is essential to the future utilization of amaranths as
super crops. There are quite a few amaranth research center and
germplasm collections all over the world that maintain and evaluate
working germplasms. To date, the genetic improvement of amaranths
has primarily involved the application of conventional selection
methods. But advances in genomics and biotechnology have
dramatically enriched the potential to manipulate the amaranth
genome, especially improving the amount and availability of
nutrients. In conclusion, the book covers all aspects of amaranths,
including their food value, significance as vegetables and
pseudo-cereals, taxonomy, phylogeny, germplasm variability,
breeding behavior and strategies, cultivation practices, and
variability in terms of their sexual systems. It offers a valuable
resource for all students, researchers and experts working in the
field of plant taxonomy and diversity.
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