Sago Palm

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Sago Palm

 

any one of several plant species of the genus Metroxylon of the family Palmae. The palms have an underground branching rhizome and numerous trunks that measure 8–12 m tall and form extensive thickets. The pinnate leaves are 4–6 m long. The large inflorescences are usually apical and consist of unisexual and bisexual flowers. The fruits are rounded and have a covering of numerous scales. Sago palms flower in their 15th to 20th year and die after bearing fruit, forming numerous suckers at the base of the trunk.

There are about 15 species, distributed on moist lowlands and flooded river plains from Thailand to New Guinea. Of the greatest economic significance are M. laeve (or M. sagu) and M. rumphii. The former is found mainly on islands of the Malay Archipelago and in New Guinea. M. rumphii, which has thorns on the petiole and main axis of the leaf, grows mainly on the Moluccas.

Island inhabitants have cultivated sago palms for a long time to obtain starch; they also use wild species for this purpose. The trees are cut down before formation of the inflorescence. The pith of the trunk is removed and sago is prepared from it. A single trunk yields 110–160 kg of starch. The trunks and petioles are used as building material, and the leaves are used in the manufacture of woven products. Starch is also obtained from some other palms, including those of the species Mauritia and Arenga. Sometimes Cycadopsida are incorrectly called sago palms.

S. S. MORSHCHIKHINA

References in periodicals archive ?
Assessment of desiccation and freezing sensitivity towards development of ctyo-preservation protocols for three cycad species: Cycas revoluta, Dioon edule and Zamia furfuracea.
Seed germination of Cycas revoluta. Journal of Environmental Horticulture 5: 105-106.
Factors affecting shoot regeneration from zygotic embryo and seedling explants of Cycas revoluta thumb In Vitro Cell and Developmental Biology Plant.
Cycas revoluta plants in 4.4-L pots were infested with crawlers by placing them next to plants with female scales that began ovipositing 6 d previous.
De Luca y Sabato (1980) describieron "crecimientos esfericos" analogos a nodulos de raices coraloides en cultivos de megagametofitos de Cycas revoluta. Este proceso de organogenesis ocurrio en medio White, despues de tres meses de cultivo en presencia de K con 2,4-D (1,13; 2,26 y 4,52 [micron]M), ambas en la misma concentracion.
In the case of Cycas revoluta Thunberg (Cycadaceae), the architecture of the plant itself, with the margins of the leaflets curling down and inward to form an arch on the abaxial surface of the leaflet, makes foliar treatments inefficient (Hodges et al.
ranging from a minimum of 180 [micro]m in diameter for Cycas revoluta to
phycoerythrin in symbiotic Nostoc of Cycas revoluta and in the
from Cycas revoluta zygotic embryos; however, no clear evidence for
regard to the resolution of manganese deficiency in Cycas revoluta L.
Polycyclic stomata with sunken guard cells are found in a large pit formed by subsidiary cells resembling Cycas revoluta [ILLUSTRATION FOR FIGURE 2H,I OMITTED].