written directly on the paper with a felt point pen. Several rolls made from sampling a larger population can be
stowed conveniently in an appropriately labeled paper bag. The TP is ideal for protecting plant parts, permitting gas
exchange, and absorbing moisture when necessary. Immature fruits thus collected have been held for as long as
one month until ripened for seed extraction. At the time of processing for seed removal, mounting of specimens,
etc., the used paper is ideal for absorbing fruit juices and disposing of refuse. Full rolls of paper are usually too bulky
to handle in the field; small rolls wadded into hip pockets are handier. An additional benefit is experienced in the
sudden, unpredictable attacks of "la verganza de Atahualpa."
Most Peruvian brands of TP are ideal for these purposes. The best grades ("Rímac"*, etc.) are tough,
elastic, absorbent, and unsegmented. By the same criteria, most U.S. brands are inferior, thanks to the craze for
ultra-softness and perforations that do not withstand much tension. The South American types can be obtained in an
attractive array of pastel colors, which are useful for distinguishing collections and other purposes. A quaint custom
in lower class Latin American hotels is the disposing of used TP in baskets rather than in toilet bowls. An
unexpected benefit of this practice is the opportunity afforded to compare the respective merits of a wide assortment
of brands and grades.
The utility of our method is by no means restricted to the collecting of wild material; in fact, we frequently
collect such items as flowers, leaves, inflorescences, and other parts in this fashion from field and greenhouse
plantings. The superiority of the procedure over the use of compartmented trays has been demonstrated frequently.
The well prepared tomato geneticist should therefore always have several rolls as part of his supplies when he
sallies forth to the greenhouse or field.
*Trade name is specified only as example; endorsement is not implied.
Kerr, E. A. A furry mutant allelic to h.
Under greenhouse conditions mature plants of the breeding line B7DAA have furry stems attributable to a
large number of short hairs. The growing point differs from h plants in that hairs are present, but these are soon
shed and replaced by shorter ones. This mutant is difficult to score in F2 populations under field conditions in
Ontario. I do not intend to do any further work with it.
Two F2 populations of 144 plants were grown. These were B7DAA (=furry, u sp, j-2) x tf c Nr, a hl alb and
B7DAA x wf c m-2 marm h. Both populations segregated for the parental genes. In the first population about 50% of
the hl+ plants were scored as furry. No close linkage was detected although the number of furry-u plants was, higher
than expected. In the second population two plants were scored as doubtfully furry, the rest being h.
The cultivar Castleblock has a furry stem phenotypically similar to B7DAA, but these have not been crossed
to determine their behavior. B7DAA has a complex ancestry going back to the cultivars Merit, Veeset, High Crimson,
Blitz, Roma VF and H1350. The ancestry of Castleblock is not known.
Kerr, E. A. A mutation to tangerine fruit color.
A single orange-fruited plant was found in 1975 in an F2 population being grown by a processing company
for selection for machine harvest whole pack. This plant was also u sp o n. The growing points were slightly
virescent but not as extensive as tangerine virescent. The mutant was crossed with the markers nor, rvt sy sf marm,
and imb d t. Records were not taken on the F1's. All of the F2 plants from the cross with imb d t were orange-colored
indicating that the mutation was allelic to or the same gene as t. The combined data with the other genes on
chromosome 10 were for nor in repulsion ++71, +nor33, mutant+32, and mutant nor6. For u in coupling they were
++155, +u43, mutant +45, mutant u28. These data indicate linkage of 37.6%a and 39.0%, respectively, and provide
additional evidence that this mutation is t.
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