GENETIC-CONTROL OF FRUIT SUGAR ACCUMULATION IN A LYCOPERSICON-ESCULENTUM X L-HIRSUTUM CROSS

被引:21
作者
STOMMEL, JR
HAYNES, KG
机构
关键词
REDUCING SUGARS; SOLUBLE SOLIDS CONCENTRATION; SUCROSE; VEGETABLE BREEDING;
D O I
10.21273/JASHS.118.6.859
中图分类号
S6 [园艺];
学科分类号
0902 ;
摘要
Fruit of the cultivated tomato (Lycopersicon esculentum Mill.) store predominantly glucose and fructose whereas fruit of the wild species L. hirsutum Humb. & Bonpl. characteristically accumulate sucrose. Reducing sugar and sucrose concentrations were measured in mature fruit of parental, F-1, F-2, and backcross (BC1) populations derived from an initial cross of L. esculentum 'Floradade' x L. hirsutum PI 390514. Generational means analysis demonstrated that additive effects were equal to dominance effects for percentage of reducing sugar. It was determined that a single major gene, dominant for a high percentage of reducing sugar, regulates the percentage of reducing sugar in tomatoes. We propose that this gene be designated sucr. Only additive effects were demonstrated to be important for glucose : fructose ratios. Using L. hirsutum as a donor parent for increasing total soluble solids concentration in the cultivated tomato is discussed.
引用
收藏
页码:859 / 863
页数:5
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