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Page 17 · DO #4827 · 231_Rogers_Bx6FF48_r
- Collection
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David James Rogers (1918–2007) papers
- Item/Folder
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Roger's "Data Processing for Genetic Resources" Japan, 1976
- Digital Object
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DO #4827,
page 17
- Collection-level dates
- 1948–1977
Page transcription
15
characteristics, for example disease resistance, if known can be plotted on geographic distributions as most likely sources for new genetic materials to introduce disease resistance. Eventually, after collections have been made, there should be several types of evaluations. These evaluations will provide additional data that should be recorded with the accessions. Morphological descriptions, etc. will, or should, be included with evaluation. Many different types of evaluations will be made--environmental responses, agronomic characteristics, fertilizer responses, etc., and these should all be fed into a data bank for most efficient record keeping. In addition to the evaluation of the collections, there should be other studies made. For example, taxonomists should base a reclassification of the plants on the new data provided from the collections and from the results of evaluation. Various computer-aided methods make it possible to reclassify plants on the basis of new evidence at the same time that collections and evaluations are being made. Often there will be cytological and genetic information, as well as analyses of various chemical constituents (i.e. amino acid profiles, carbohydrate, fat, and other constituents of importance) to be evaluated, and these can be valid characters for use in taxonomic work. The computer-aided programs that serve taxonomists are such packages as the NTSYS (Numerical Taxonomy System) or GRAPH and CHARANAL. These provide objective means to classify the plants, and classification of cultivated plants is a very
