Agriculture Reference
In-Depth Information
(4) Discuss the difference between durable and non-
durable plant resistance. Indicate which of the
disease forms listed in Think Question 3 (above)
would be most likely to show durable qualitative
disease resistance. Why?
(5) In plant breeding, two main disease resistance
mechanisms exist,
inhibition of infection
and
inhi-
bition of growth after infection
. Explain (with
examples if necessary) each of the mechanisms.
(6) Sixteen members of an apple taste panel were asked
to rate (according to taste) the fruit from each of
three potential new apple cultivars (A, B and C).
Rating scores were: 1
Without the use of second order (or higher) statis-
tics, what are your conclusions?
In addition to an overall preference rating, list five
questions which each taste panel member could
have been asked either before or after tasting the
samples.
(7) Choose any agricultural crop (e.g. wheat, barley,
potato, apple, hops, etc.) and outline a set of breed-
ing objectives to be used to develop new cultivars.
Indicate potential markets for the new cultivars.
(8) Outline two political changes (either local, national
or international) which would influence your deci-
sion when setting breeding objectives for a new
potato cultivar that will be released in 18-20 years
time.
(9) You have been offered a job as Senior Plant Breeder
with the '
Dryeye Onion Company
' in Southern
Idaho. Your first task in this new position is to set
breeding objectives for onion cultivar development
over the next 12 years. Outline the main points to be
considered when setting your breeding objectives;
indicate what questions you would like answered to
enhance the breeding objectives you will set.
=
best; 2
=
second best and
3
=
least best. The results are shown below:
Taste panel member
Cultivar 12345678910111213141516
A
113323321 1331323
B
232211212 2213212
C
321132133 3122131
