TABLE 1. Summary of weather data for the three growing seasons used to evaluate
 heat tolerant and/or parthenocarpic genotypes in 1983.

 Bradenton, Spring Urbana, Sunner Bradenton, Sumer-Fall


 Feb. Mar. Apr. May June July Aug. July Aug. Sept. Oct.

Temperature

 men high 21.7 22.8 27.2 30.6 28.6 32.1 31.3 33.3 33.3 31.7 30.0

 mean low 10.6 11.7 13.9 17.2 17.1 20.4 20.0 22.2 23.3 21.7 18.9

Precipitation (cm) 25.9 21.8 6.1 3.0 23.1Z 3.6 11.7 19.6 17.8 16.5 12.7

z AlJ rain before field transplanting.


 TABLE 2. Yield and fruit size for early and total harvests of genotypes tested for
 heat tolerant fruit setting at Bradenton, Florida, Summer 1983.


 Early Harvest z Total Harvesty

 Yield (kg/plant) Marketable Yield (kg/plant) Marketable

 Genotype Marketable Total Fruit Size (g) Marketable Total Fruit Size (g)

 Cl lid 1.41 aX 1.93 a 40 b 3.05 ab 4.04 a 34 cd

 7104-1 1.21 ab 1.36 ab 48 b 3.43 a 3.93 a 43 c

 7108-1 0.92 abc 1.28 ab 43 b 2.07 cd 2.89 ab 28 d

 7105-1 0.71 bc .99 bc 139 a 2.88 abc 3.76 a 122 a

 7007-SBK 0.64 c .94 bc 133 a 2.17 bcd 3.67 a 116 ab

 7106 0.64 c 1.15 b 133 a 1.74 d 3.13 ab 128 a

 Walter 0.38 c 0.41 c 130 a 1.49 d 2.06 b 105 b

 ZSum of first 3 harvests, Oct. 6, 14, 20, 1983; crop seeded on June 29, transplanted to field July 11.

 YSum of 6 harvests ending Nov. 9, 1983.

 XMeans in column not followed by the same letter are significantly different by Duncan's multiple range

 test, 5% level.


 TABLE 3. Yield and parthenocarpic fruit set for tomato genotypes grown under
 three environmental conditions in 1983.2

 Bradenton, Spring Urbana, Sumier Bradenton, Sunner-Fall

 Fruit No. Fruit Wt. Parthenocarpic Fruit No. Fruit Wt. Parthenocarpic Fruit No. Fruit Wt. Parthenocarpic

 GenotypeY per plant (kg/plant) Fruit Set (%) per plant (kg/plant) Fruit Set per plant (kg/plant) Fruit Set (%)

 Severianin 74.4 6.55 ax 49.7 a 25.2 b 2.02 b 54.0 a 49.8 b 2.93 b 17.4 a

 C1 lid 70.8 3.50 b 0.0 c 49.9 a 2.35 ab 6.9 c 125.4 a 4.00 a 0.2 b

 645 63.9 6.80 a 39.1 b 34.9 b 2.97 a 20.4 b 49.4 b 3.21 ab 14.3 a

 646 73.7 6.72 a 46.3 a 30.3 b 2.39 ab 28.0 b 59.1 b 3.30 ab 16.8 a

 NS
 z For weather information, see Table 1.

 Y Data shown for the 2 breeding lines which had the most consistent fruit set over all 3 environments. The other 3 breeding lines

 tested were rrmitted for simplicity.

 x Means in column not followed by the same letter are significantly different by Duncan's multiple range test, 5% level. Three other

 lines not shown were in the statistical analysis. NS = nbt significant.


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