Amaranthus dubius is a ANNUAL growing to 1 m (3ft 3in). It is frost tender. It is in leaf from April to October, in flower from July to September, and the seeds ripen. The name Amaranthus dubius was first published by Martius () without diagnosis and description, so it has to be considered invalid. Amaranthus dubius is a weedy plant widespread throughout the humid lowland tropics. It originates from tropical America, where it is common in the Caribbean.

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Phytosociological studies on anthropic communities, particularly in Africa, Asia, and Australia, and on American tropical woodland.

Review of Palaeobotany and Palynology, The plant is self-fertile. Amaranths like fertile, well-drained dbuius with a loose structure. The distribution in this summary table is based on all the information available. Food composition table for use in Africa.

The cultivated type may have been developed from the weedy ancestor in tropical Asia Indonesia, India and is found in several African and Central American countries, where immigrants have introduced it. Its preferred soils are fertile, well-drained and with a loose structure Grubben, Associations No detailed studies about the vegetation communities associated with A.


This species most probably originated as a result of ancient hybridization between A. Atoll Research Bulletin, You can unsubscribe at anytime.

It has escaped from cultivation and now it is considered casual or naturalized mainly in tropical and subtropical regions of Africa, Asia, Australia and the Pacific. By using this site, you agree to the Terms of Use and Privacy Policy. A study of the pollen grains of Amaranthus spinosus Linne and A.

Amaranthus dubius

Bracts lanceolate, shorter than 2 mm usually 1. It is very close genetically to Amaranthus spinosus and other Amaranthus species. There are citation in web searches related to Amaranthus dubius Mart. Cytogenetic studies in Amaranthus. The rubius variety is practically indistinguishable from Amaranthus viridis. This species has been widely introduced as a green vegetable for human consumption and as a medicinal herb.

Research should focus on optimization of cultural practices integrated pest management to avoid pesticide residues, plant nutrition.

Amaranth responds to high rates of organic fertilizer. Canadian Journal of Plant Science, 83 4: It is probable that, like A. You will receive a range of benefits including: More information about modern web browsers can be found at http: The average composition of amaranth leaves per g edible portion is: Amaranthus dubius – C. It includes at least 17 species with edible leaves.


It shows a high photosynthetic rate at high temperatures and light intensity, and lower CO 2 compensation than C3 species. Flowers unisexual, subsessile, with 4— 5 tepals up to 2. Citation in scholarly articles. Journal of the West African Science Association, 4 2: BoxAH Wageningen, Netherlands.

Notes on four newly naturalized plants in Taiwan.

Amaranthus dubius in Flora of North America @

It is not common to add potash. Amaranthus dubius perennial variety from Uganda and western Kenya. Notes on Taxonomy and Nomenclature Top of page The name Amaranthus dubius was first published by Martius without diagnosis and description, so it has to be considered invalid McNeill et al.

Rainfall Regime Top of page Uniform. Native to North America? The cultivar ‘Claroen’ is considered to be one of the best cultivars[].