BIOL 1050 Lecture Notes - Lecture 6: Dna Replication, Cytokinesis, Penicillin
8 Dec 2017
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Insect disease resistant rootstock: great french wine blight, phylloxera spp, from usa, attack roots, arrived in europe in 1800s, decimated ~ 40% of french vines. Layering like stem cuttings in reverse: root first, then cut stem, several variations, ground/mound layers, air layers. Suckers: some plants are born suckers, can form from roots, base of shoot, bulbs, can be separated into plants. Plant tissue culture/ in vitro culture in vitro (in glass: tissue (cid:894)(cid:862)e(cid:454)pla(cid:374)t(cid:863)(cid:895) (cid:272)ultured i(cid:374) sterile (cid:894)a(cid:454)e(cid:374)i(cid:272)(cid:895) e(cid:374)(cid:448)iro(cid:374)(cid:373)e(cid:374)t, culture media contains, minerals, vitamins, carbohydrate source (sugar, gelling agent (sometimes, plant growth regulators, good way to get rid of diseases. Virus eradication using tissue culture: meristem not connected to vascular system, cells not yet infected, uninfected cells can be cultured, regenerated plants can be virus free. Intergeneric crosses: triticale (wheat x rye, fescue-loliums (tall/meadow fescue x ryegrass, genetic transformation, herbicide tolerance.
