5Standwood P L. Cryopresservation of seed germplasm for genetic conservation. In Cryopreservation of plant cells and organs. Ed.Kratha, 1985, CRC Press Inc Boca Raton,Florida, 199-126.
6Pence V C,Cryopreservation of immature embryos of Theobroma cacao. Plant cell Rep, 1991,10:144-147.
7Engelmann F, Assy-Bah B. Cryopreservation of mature zygotic embyyos of coconut (Cocos nucitfera L).Cryobiology. 1992,29(6)-746.
8Norman M N ,Chin H F,Hor Y L. Desiccation and cryopreservation of embryonic axes of Hevea hrasiliensis. Pertanike, 1986,9:299-303.
9Fu J R,Xia Q H,Tang L F. Effects of desication on excised embryonic axes of three recalcitrant seeds and studies on cryopreservation. Seed Sci &.Technol, 1993,21:85-95.
10Pence V C. Desiccation and survival of Aesculus,Castanea and Quercus embryo axes through cryopreservation. Cryobiology, 1992,29:391-399.