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Lecture 13

Lecture 13 Crop Selection

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Department
Biology
Course
BIO220H1
Professor
Doug Thomson
Semester
Winter

Description
Lecture 13 BIO220Rice maize wheatFew genotypes harvested butgenetic variation existsCenter of origins VavilovIdea VavilovCrops originated in areas where diversity of wild relatives is greatestVernalization LysenkoApply cold treatment induce early floweringCaused by epigenetic modification of flowering time genesProblem Vernalization reset during meiosisVernalized state not transmitted across generationsLysenko rejected Mendelian Darwinism in favor of LamarckConsequencesSouthern crops acclimatized to grow in north via Lamarckian breedingDomestication of cropsSevere bottleneck small subset chosen for cultivationStrong artificial selection human retain best performing cropso
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