Bela
ActiveSolanum lycopersicum L. · Tomato
Hristo Georgiev
BG
3 records
Variety traits
Tomato Heterosis
Solanum lycopersicum L.
Heterosis in tomato manifests as the superiority of F1 hybrids over parental lines in yield, earliness, fruit uniformity, and adaptability. The effect is achieved through the selection of parental lines with high combining ability.
In the reference 3 varieties crop Tomato, where this is mentioned in the description.
The manifestation of heterosis in tomato is assessed by comparing hybrid performance with the better parent or the mid-parent value. In terms of marketable yield, true heterosis can range from 36% to 115%, and for early yield, from 50% to 260%. To select promising combinations, diallel crosses, combining ability analysis, and the use of DNA markers to study allelic composition are employed.
The use of F1 hybrids ensures increased overall productivity, concentrated fruit set—which helps avoid the peak of epiphytotic development—and improved product uniformity. In breeding programs, genes for resistance to biotic and abiotic stresses are combined into a single genotype. The heterosis effect is temporary and is lost in subsequent generations (F2 and beyond) due to trait segregation.
General information about the subject — on the page Heterosis.
Varieties of Tomato mentioned in the description
Selection based on the description text, not on official evaluation: these data are absent from registers. For specific variety details, please refer to its profile.
H1370
TerminatedSolanum lycopersicum L. · Tomato
IT
1 record