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Page 68 · DO #4666 · 231_Rogers_Bx2FF27_r
- Collection
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David James Rogers (1918–2007) papers
- Item/Folder
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Taximetrics Course - Student Reports, 1966–1968
- Digital Object
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DO #4666,
page 68
- Collection-level dates
- 1948–1977
Page transcription
that Andy used for his hybridization techniques would work particularly well
when we were going about setting up an input data for the purposes of classification,
classification as contrasted with the discovery of hybrids. Now it is really
what Andy would do when he tried to discover hybrids is
to try to take pieces of contrasting information from the plant specimens
that he employed. For example, he might discover the characters of a plant
and population vary according to the amount of pubescence
which the plants have, in other words, the amount of hair,
the amount of foliage or some other part. You might discover that some of his plants had
no pubescence whatsoever anywhere, but that as he examines these hybrids
he discovers they were arranged going from none up to a lot of
a real fuzzy plant so to speak. So he discovered that he couldn't really very
precisely say that a plant in this particular area here had any more or less
than some other particular plant, but for his purposes in order to put his
plants into packages maybe he could sort of force a decision about the
pubescence of a particular plant where he had to sort of have a range.
That he could say,"Okay, for my purposes this is the study of hybridization".
I can decide that a group of plants which most people
can be called a one character, or one attribute of a character of pubescence.
That is he looked at these plants and furthermore he discovered that there was
some, and this is a very qualitative terminology. They have an intermediate
amount of pubescence or hair. In other words, it had, they
obviously had more than had none, although some of the ones
that he/ have decided had none had some.
nice and mixed up for you.
Well this, the way biologists get sort of mixed up so we have to be able to do
something At least he could force some sort of decision where he might
decide that this was an attribute where he had some hair and he just labeled
whether one, two, and three or whether or not