![]() ![]() After 4 weeks, the embryo floats in a sack containing liquid the heart beats and the brain has developed.After 72 hours from fertilization, the zygote divides into 16 cells which will stick on the uterus in several days later.About 36 hours after fertilization,the fertilized ovum divides once into 2 cells.Fertilization : the fusion of sperm nucleus with ovum nucleus producing fertilized ovum (zyogte).In humans, when embyrogenesis finishes, by the end of the 10th week of gestational age, the precursors of all the major organs of the body have been created. After fertilization the embryogenesis starts.Prenatal development is the process in which a human embyro or fetus gestates during pregnancy, from fertilization until birth.Nurita-Toruan (1978) Pertumbuhan dan perkembangan embrio kelapa (Cocos nucifera L.) dalam kultur aseptik. (1953) Researches on the mineral nutrition of plant tissues.Īnn. ISSN 0249-6305 Churchill ME, Arditti J & Ball EA (1971) Clonal propagation of orchids from leaf tips.Īm. Comptes Rendus de l'Académie des Sciences.Série D: Sciences Naturelles (2), p. ![]() (Stewart & Button, 1975).īuffard-Morel J (1968) Effets du glucose, du lévulose, du maltose et du saccharose sur le développement des embryons de palmier à huile (Elaeis guineensis Jacq. Plant tissues: Cocos nucifera (Nurita-Toruan, 1978) Digitalis purpurea (Rucker et al, 1976) Elaeis guineensis (Buffard-Morel, 1968) Laeliocattleya (Churchill et al, 1971) Magnolia soulangeana (Le PageDegivry, 1970) Paphiopedilum spp. Preparation of concentrated solutions is not recommended as insoluble precipitates may form.Ĭontains the macro- and micronutrients as described by Heller (1953). H393 Heller Basal Salt Mixture Properties
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