Hevea


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Hevea

[′hē·vē·ə]
(botany)
The rubber tree genus of the order Euphoriales from which the largest volumes of latex are harvested for use in the manufacture of natural rubber.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Hevea

 

a genus of evergreen monoecious trees of the Euphorbiaceae family.

There are approximately 12 species of Hevea, found in the forests of tropical America. H. brasiliensis is the principal source of natural rubber; it grows wild in the damp tropical forests of the Amazon valley and is widely cultivated in tropical countries (most notably in Ceylon, the Malacca Peninsula, and the Greater Sunda Islands). The height of the tree is 30-40 m; the leaves are compound ternate and the blossoms small, unisexual, and gathered into paniculate inflorescences with capsular fruit. The seeds are oval and large (up to 3 cm) with a heavy brown casing, and quickly lose their germinating capacity. The milky sap of the plants contains the rubber, for which the trees are tapped from the age of 10-12 years. One tree may yield from 3-4 to 7.5 kg of rubber per year.

REFERENCES

Tekhnologiia rastitel’nogo kauchuka i guttaperchi. Moscow, 1944.
Zhukovskii, P. M. Kul’turnye rasteniia i ikh sorodichi, 2nd ed. Leningrad, 1964. Pages 760-63.
Siniagin, I. I. Tropicheskoe zemledelie. Moscow, 1968. Pages 245-53.

S. S. MORSHIKHINA

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
Coutinho-Netto, "Increased vascular permeability, angiogenesis and wound healing induced by the serum of natural latex of the rubber tree Hevea brasiliensis," Phytotherapy Research, vol.
Pode-se observar a casa e o seringueiro desenhados frontalmente, enquanto a arvore da seringueira desempenha um duplo papel: se vista de frente, o seu tronco e seus ramos sao os da Hevea brasiliensis, mas os mesmos elementos, vistos em planta, sao o espigao e as estradas que o seringueiro percorre em giro.
Fresh natural rubber (FNR) latex was collected by tapping from mature Hevea rubber trees of Thai Rubber Latex Co., Ltd., plantation in Chonburi province, Thailand.
[33] have reported the Hevea EST-SSR markers, but the EST they used were ones before 2009.
Los autores agradecen: a) al proyecto "Evaluacion de clones promisorios de caucho natural (Hevea brasiliensis) para la Amazonia colombiana bajo sistema agroforestal con copoazu (Theobroma grandiflorum) y platano harton (Musa AAB) en el departamento de Caqueta"--Contrato RC No.
Genotype-environment interaction and phenotypic stability for girth growth and rubber yield of Hevea clones in Sao Paulo State, Brazil.
Natural rubber latex (NRL) comes from the sap of the tropical tree Hevea brasiliensis.
Instead of using rubber trees (Hevea brasiliensis, for those of a botanical bent), the Continental team, working with personnel from the Fraunhofer Institute, are sourcing the latex from a Russian dandelion (Taraxacum kok-saghyz) to make tires.
Natural Rubber: From the Odyssey of the Hevea Tree to the Age of Transportation