Coix lacryma-jobi L. (Jobstears): In Vitro Regeneration
Jobstears (Coix lacryma-jobi) (Fig. 1) belongs to the Gramineae and is a diploid species (2n = 20, Smith 1976). It is widely distributed in the temperate zones in the world, especially in humid areas of low latitude. In China, it is mainly distributed in the south provinces and there are wild and cultivated types of jobstears (Anon. 1961a). Jobstears is a perennial root species and has strong root system with thick fibrous roots (3 mm in diameter). The stem is straight, 1 –1.5 m high and has ten nodes and some branches. The leaf is conifer-shaped and 30 cm in length and 1.5–3 cm in width, midrib thick and prominent. Unisexual flower, monoexism and axillary or top-growing raceme. Female spikelets are at the base of inflorescence and male spikelets at the top of the inflorescence. The blooming period is July–September and in September–October the grains ripen.
KeywordsCallus Induction Anther Culture Anther Wall Vegetative Nucleus Immature Inflorescence
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- Anon (1959) Graphic major plant species in China (Gramineae). Science Press, Beijing, pp 850-851 (in Chinese).Google Scholar
- Anon (1961a) Economical plant species in China, vol 1. Science Press, Beijing, pp 615-616 (in Chinese).Google Scholar
- Anon (1961b) Economical plant species in China, vol 2. Science Press, Beijing, pp 1969–1970 (in Chinese).Google Scholar
- Anon (1976) A corpus of traditional Chinese herbs, vol 1. Medical Press, Beijing, p 922 (in Chinese).Google Scholar
- Anon (1979) A dictionary of Chinese herbs. Shanghai Sci Technol Press, Shanghai, p 359 (in Chinese).Google Scholar
- Chu CC, Wang CC, Sun CS, Hsu C, Yin KC, Chu CY, Bi FY (1975) Establishment of an efficient medium for anther culture of rice through comparative experiments of the nitrogen sources. Sci Sin 18: 659–668.Google Scholar
- Li YH (ed) (1979) Anatomy and morphology of Gramineae. Shanghai Sci Technol Press, Shanghai (in Chinese)Google Scholar
- Smith PM (1976) Minor crops. In: Simmonds NW (ed): Evolution of crop plants. Longman, London New York, pp 301–324.Google Scholar
- Wang JJ, Chu ZH, Sun JS (1980) Studies on the induction of pollen sporophyte of Coix lacrym-jobi. Acta Bot Sin 22: 316–323 (EngUsh summary).Google Scholar
- Zheng XR, Long YY (eds) (1983) Botany of major crops. Agriculture Press, Beijing (in Chinese)Google Scholar