Last updated: 06 Apr 2015
Amaranthus tricolor L.
Amaranthus amboinicus Buch.-Ham. ex Wall., Amaranthus bicolor Nocca ex Willd., Amaranthus cuspidatus Vis., Amaranthus dubius Mart. [Invalid], Amaranthus flexuosus Moq., Amaranthus gangeticus L., Amaranthus inamoenus Willd., Amaranthus incomptus Willd., Amaranthus japonicus Houtt. ex Willd., Amaranthus japonicus Houtt. ex Steud., Amaranthus lanceolatus Roxb., Amaranthus lancifolius Roxb., Amaranthus lividus Roxb. [Illegitimate], Amaranthus mangostanus L., Amaranthus mangostanus Blanco, Amaranthus melancholicus L., Amaranthus mucronatus Hook.f., Amaranthus oleraceus Roxb., Amaranthus polygamus Roxb., Amaranthus polygamus Thwaites, Amaranthus rotundifolius Moq., Amaranthus salicifolius H.J.Veitch, Amaranthus tristis L., Amaranthus tristis Wall. [missapplied], Blitum gangeticum Moench, Blitum melancholicum Moench, Glomeraria bicolor Cav. ex Moq., Glomeraria tricolor (L.) Cav. [1]
Malaysia | Bayam [2] |
English | Chinese spinach, joseph’s coat [2], edible amaranth, edible amaranth spinanch [3] |
China | Yan lai hong [2], yin choi (Cantonese); heng chai, yin chai (Hokkien); xian chai (Mandarin)[3] |
India | Khutura, ramadana, totakura (India); chauli, chalveri (Hindi); cheers, chulai (Mala)[3] |
Indonesia | Bayem, senggang, ternak [3] |
Japan | Seiyo-ha-geito [2] |
This genus is widely distributed. Amaranthus tricolor originated from Southeast Asia but has been carried to other regions by emigrants. By far, the most important species in Southeast Asia is A. tricolor, followed by A. dubius and A. cruentus. [4]
A. tricolor comes from the family of Amaranthaceae. It is an erect, annual herb which can grow up to 1.5 m tall. [4]
The leaves are elliptical to lance-shaped or broad-ovate, dark green, light green or red. [4]
Clusters of flowers are axillary, often spherical or slightly spherical, and with a reduced terminal spike, but occasionally the terminal spike is well-developed. There are 3 tepals. [4]
The fruit is dehiscent with a dehiscing lid. [4]
The seeds are black and relatively large with about 1200-2900 seeds/g. [4]
A. tricolor is characterised by the C4-cycle photosynthetic pathway, which exhibits high photosynthesis at high temperature and radiation. It grows well at day temperatures above 25°C and night temperatures not lower than 15°C. In Indonesia, the temperature is too low above 800 m for A. tricolor which causes growth retardation. Shade is disadvantageous except in cases of drought stress. A. tricolor is a quantitative short-day plant, which is an advantage in the subtropics where the generative stage is retarded during summer. Due to rapid growth, water consumption is high. A crop normally uses about 6 mm/day. A. tricolor prefers fertile, well-drained soils with a loose structure. The mineral uptake is very high. [4]
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Figure Figure 1: The line drawing of A. tricolor L. [4]