Amaranthus: A Promising Crop of Future by Saubhik Das

By Saubhik Das

This ebook serves the bigger group of plant researchers engaged on the taxonomy, species delimitation, phylogeny, and biogeography of pseudo-cereals, with a distinct emphasis on amaranths. It additionally offers broad info at the nutritive price of underutilized pseudo-cereals, the objective being to develop the vegetable list.

Amaranthus is a worldly genus of annual or short-lived perennial crops. many of the species are summer time annual weeds and are in most cases often called pigweed. just a couple of are cultivated as vitamin-rich greens and ornamentals. The protein-rich seeds of a handful of species, referred to as grain amaranths, are ate up as pseudo-cereals. Amaranthusmanifests huge morphological variety between or even inside sure species, and there's no normal contract at the taxonomy or variety of species. presently the genus Amaranthus is assumed to incorporate 3 famous subgenera and 70 species. Amatanthus is taken into account to almost certainly supply an alternate crop in temperate and tropical climate.

The category of amaranths is ambiguous as a result of the loss of discrete and quantitative species-defining features and the big variety of phenotypic plasticity, in addition to introgression and hybridization concerning weedy and crop species. it's a recognized incontrovertible fact that either vegetable and grain amaranths have advanced from their respective weed progenitors. There are greater than a hundred and eighty various weed species which are herbicide-resistant, and amaranths are thought of to be best participants of the resistant biotypes. Amaranth species offer abundant scope for investigating herbicide resistance mechanisms. Amaranths additionally exhibit variability by way of their mating habit and germplasm, adaptability to varied growing to be stipulations, and wide selection of variability in sexual structures, from monoecy to dioecy. a great seize of those parameters is vital to the long run usage of amaranths as large plants. There are various amaranth examine middle and germplasm collections worldwide that keep and evaluation operating germplasms. thus far, the genetic development of amaranths has basically concerned the applying of traditional choice equipment. yet advances in genomics and biotechnology have dramatically enriched the aptitude to govern the amaranth genome, specifically enhancing the volume and availability of nutrients.

In end, the booklet covers all facets of amaranths, together with their meals worth, value as greens and pseudo-cereals, taxonomy, phylogeny, germplasm variability, breeding habit and techniques, cultivation practices, and variability by way of their sexual structures. It bargains a worthwhile source for all scholars, researchers and specialists operating within the box of plant taxonomy and diversity.

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Leaves are long-petiolate (petioles up to 6 cm, in robust plants not rarely equalling lamina), lamina ovate to rhomboid or oblong-ovate, with obtuse to subacute, mucronulate tip, shortly cuneate or attenuate base, multicellular hairs along the lower surface of the primary venation and often on the lower margins, 3–6 × 5-11 cm. Flowers are arranged in greenish or rarely somewhat pinksuffused, stout, axillary and terminal spikes, which are usually shortly branched to give a lobed appearance, more rarely with longer branches.

Dietary antioxidants prevent free radicals related to ageing such as reactive oxygen species in the human body (Nilsson et al. 2004). The free radical theory of ageing involves cumulative damage through natural free radical oxidative changes, which over time results in increasing antigenicity, protein changes and oxidative DNA damages (Edelstein and Sharlin 2009). Vitamin C is a powerful antioxidant contributing to the normal function of the immune system (Melvin 2010). Polyphenolic compounds have most antioxidant function acting as electron donors, electron acceptors, decomposer of peroxides and hydroperoxides, metal activators and deactivators and UV absorber (Svobadva et al.

Retroflexus L. (b) A. ) J. D. Sauer (c) A. quitensis Kunth. (d) A. palmeri S. Watson (e) A. powellii S. Watson (f) A. blitoides S. Watson (g) A. M. Johnston (h) A. albus L. 44 3 Amaranths: The Crop of Great Prospect Fig. 18 (continued) has become naturalised throughout the temperate regions of the Northern and Southern Hemispheres. It is an annual herb, erect or with ascending branches, simple or branched (especially from the base to about the middle of the stem). Stems are stout, sub-terete to angled and densely covered with multicellular hairs.

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