              
|
DENDROBIUM
JAQUELYN THOMAS UH232
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Jaquelyn
Thomas UH232 is the second seed-propagated Dendrobium cultivar
to be released by the University of Hawaii. It is a cross
between tetraploid Jaquelyn Thomas UH44-50 and tetraploid
Jaquelyn Thomas 0580 which arose from meristem culture. The
former is white with a tinge of lavender, while the latter
is two-tone purple-violet. This seed-propagated cultivar is
relatively uniform. The yield is somewhat intermediate between
the high yield of UH44 and the poorer yield of tetraploid
0580. The sprays are erect to arching and carry about 20 two-toned
purple-violet flowers similar in color to that of the 0580
parent. Although this new cultivar has not been adequately
tested, grower interest has dictated its early release.
The
monthly spike yields of 20 plants during 1974, the first year
of production (germination date – July 19, 1971), and 1975,
the second year of production are given in table 1.
|
Table
1. Monthly spike yield of 20 plants of Dendrobium Jaquelyn Thomas
UH232 during 1974 and 1975
|
Month
|
1974
|
1975
|
|
January
|
0
|
2
|
|
February
|
0
|
0
|
|
March
|
0
|
3
|
|
April
|
3
|
6
|
|
May
|
0
|
3
|
|
June
|
3
|
15
|
|
July
|
2
|
12
|
|
August
|
5
|
7
|
|
September
|
3
|
40
|
|
October
|
2
|
15
|
|
November
|
0
|
19
|
|
December
|
0
|
0
|
|
Total
Yield
|
18
|
122
|
|
Average
yield per plant
|
0.9
|
6.1
|
The
characteristics of UH232 are as follows:
|
Spike
|
Erect
to arching
|
|
Average
length of spike
|
24
inches
|
|
Average
length of scape
|
7
inches
|
|
Average
number of flowers per spike
|
20
|
|
Peaks
of bloom
|
Early
summer and fall
|
|
Average
keeping quality in air-conditioned laboratory in water
|
10
days (half-life)
|
|
Average
keeping quality in air-conditioned laboratory in floral preserve
|
18
days (half-life)
|
|
Flower
|
Natural
spread – 2.75 x 2.5 inches; petals and sepals slightly recurved;
petals – 1.75 inches long, 0.75 inch wide; sepal – 1.5 inches
long, 0.5 inch wide; tip of petals and lip purple violet (RHS
Colour Chart No 80A); sepals and basal part of petals light
purple-violet; pedicel – 1.75 inches long.
|
|
Stem
|
Sturdy,
up to 4 feet tall, 0.75 inch in diameter
|
|
Leaf
|
5.5
inches long, 2.5 inches wide
|
H.
Kamemoto, J. Kunisaki, Y. Sagawa, and C. Bobisud
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