Biotech III

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Karteikarten am Biotech III, erstellt von J yadonknow am 14/05/2018.
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The green revolution Planned international effort in 1970 to ^ crop yield
How? (4) New crop cultivars Irrigation Fertiliser Pesticides
Global pop by 2100 9 billion
Effect of TGR Chronic hunger reduced from 40% to 20% Saved millions of hectares from cultivation
How did it achieve (4) more crop cycle per year Semi-dwarf habit Disease resistance Increased adaptability to local condition
Crop disease examples wheat rust, rice blast
Increased adaptability to environment example IR8 rice
What is meant by semi-dwarf habit? strong stem means less lodging High yield
Micropropagation Meristem in sterile culture to produce GI
Problem Susceptible to disease, all susceptible
Plant tissue culture 2: Elim of systemic viruses: Virus infects plant, can't infect meristem Sterile culture of meristem eliminates virus
Molecular breeding useful for Speeding up fruit true breeding Identify seedlings w desirable trait via DNA markers
How to find markers Generate fingerprint of parent plant using AFLPs or genome sequencing
More tricks to speed up plant breeding (2) Protoplast fusion Embryo rescue
Anti-cancer drug from plants example Taxol from pacific yew tree
Using bacteria for vector of transgenes Agrobacterium tumefaciens has a gene that encodes cytokinin
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