Alpinia purpurata (Vieill.) K. Schum., commonly known as red ginger, is an important ornamental species cultivated throughout tropical and subtropical regions for its striking inflorescences formed by brightly colored bracts. Native to Malesia and the southwestern Pacific islands, this species typically forms dense thickets in moist habitats due to its vigorous rhizomatous growth. The plant’s aromatic rhizome also holds medicinal value and is traditionally used to treat fever, muscle spasms, intestinal gas, and inflammation. Although Alpinia purpurata can be propagated through both rhizomes and seeds, seed production is infrequent because fruit development and ripening occur rarely, limiting the reliability of sexual reproduction as a propagation method. Consequently, large-scale or commercial cultivation often depends on vegetative propagation via underground stems. During field observations conducted on the campus of The Neotia University, an unusual yet promising reproductive phenomenon viviparous germination was recorded. In this process, seeds begin to germinate while still attached to the parent plant, leading to the emergence of plantlets directly from the inflorescence. This natural mechanism, although previously undocumented for this species, provides an alternative mode of propagation that bypasses the limitations of poor seed set and infrequent fruiting. The occurrence of vivipary in Alpinia purpurata suggests a potentially valuable method for enhancing propagation efficiency, improving plant availability, and supporting commercial production. Further investigation into the physiological and environmental factors promoting vivipary may help optimize this method for horticultural application.
Alpinia, commonly known as red ginger is widely cultivated as an ornamental hedge in the tropics and sub-tropics for its showy flowers on brightly colored bracts. This plant is native of Malesia (Papua New Guinea) and the South-western Pacific (New Caledonia, Solomon and Vanuatu) islands. This hedge plant has the potential to grow as dense thickets in moist habitats. The horizontal underground stem (rhizome) of this plant, is used to make medicine for treating fever, muscle spasms, intestinal gas, and swelling (inflammation) [1]. It is an herbaceous plant that grows upright, up to 12 to 13 feet, and produces leafy, cane-like stems with beautiful spikes (Figure 1). Roots are aromatic rhizomes that support the plants to grow and spread in thick clusters and produce aerial shoots when older shoots die. The leaves are long and sessile. The inflorescence is commonly known as spike that may be 15 - 30 cm long with bracts overlapping and thus, forming a cone or funnel shape.
This plant is usually propagated by its under-ground rhizomes and occasionally by seeds. Seeds are obtained when the fruits (Figure 2) burst after ripening. Development of fruits is also a rare phenomenon. Hence, we were looking forward for some other mechanisms, through which this plant could be propagated more easily. In that direction we found viviparous germination of this plant, in the campus of The Neotia university (Figure 3) that can be used for its commercial propagation [2].
Figure 1: Herbaceous Plant That Grows Upright, Up To 12 To 13 Feet, And Produces Leafy, Cane-Like Stems With Beautiful Spikes
Figure 2: Reproductive Stages of Alpinia
Figure 3: Viviparous Germination of Alpinia
Chang, B.K.W., and A. Criley. "Clonal propagation of pink ginger in vitro." HortScience, vol. 28, 1993, p. 1203.
Prabhu Kumar, K.M., et al. "Red ginger, a promising crop for horticulturists." Plant Hort. Tech., vol. 10, May-June 2010, pp. 40-43.
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