1. Afreen F, Zobayed S A M, Kubota C, Kozai T and Hasegawa O 2000 A combination of vermiculite and paper pulp supporting material for the photoautotrophic micropropagation of sweetpotato. Plant Sci. 157, 225–231.
2. Afreen F, Zobayed S M A and Kozai T 2001 Mass-propagation of coffee from photoautotrophic somatic embryos. In Molecular Breedings of Woody Plants. Eds. N Morohoshi and A Komamine. Elsevier Science B V, Amsterdam, The Netherlands.
3. Afreen F, Zobayed S M A and Kozai T 2002a Photoautotrophic culture of Coffea arabusta somatic embryos: photosynthetic ability and growth of different stage embryos. Ann. Bot. 90, 11–19.
4. Afreen F, Zobayed S M A and Kozai T 2002b Photoautotrophic culture of Coffea arabusta somatic embryos II: development of a bioreactor for the large-scale plantlet conversion from cotyledonary embryos. Ann. Bot. 9, 20–29.
5. Bjorkman O and Demmig B 1987 Photon yield of 02 evolution and chlorophyll fluorescence characteristics at 77K among vascular plants of diverse origins. Planta 170, 489–504.