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  • Author or Editor: A. D. Bisges x
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Abstract

Efficiency of somaclone production was examined using 10 processing tomato cultivars and 18 growth regulator treatments. Although zeatin has been reported to induce shoot development most readily, a combination of IAA (5.7 µmol·liter–1) and kinetin (4.7 µmol·liter–1) was found to be equal to zeatin in shoot regeneration efficiency and reduced the time required for shoot production. Rooting was achieved by transplanting the in vitro-produced shoots to Pro-Mix under intermittent mist in a greenhouse. Chemical names used: (E)-2-methyl-4-(1H-purin-6-ylamino)-2-buten-1-ol (zeatin); 1H-indole-3-acetic acid (IAA); N-1-furanyImethyl)-1-H-purin-6-amine (kinetin).

Open Access

Abstract

Stability and variation of fruit yield, soluble solids, and citric acid content of eight tomato (Lycopersicon esculentum Mill.) cultivars over 6 years were investigated. The cultivar Ohio 7814 exhibited above-average yield and yield stability. The cultivars showed a wide range of variation for percent soluble solids and citric acid. The cultivar Ohio 7870 was least variable in soluble solids, and ‘Heinz 2653’ most variable. Regarding citric acid, ‘Heinz 722’ had the largest seasonal variation, whereas ‘Ohio 7814’ had the least. A linear relationship between fruit yield and percent soluble solids was not detected on the basis of 6 years of data.

Open Access