Variety traits

Maize heterosis

Zea mays L.

Heterosis in maize is expressed as a significant increase in productivity and viability of F1 hybrids compared to parental inbred lines. The effect manifests in yield, morphological traits, and adaptability, and is measured in percentages relative to parental performance.

In the reference 71 varieties crop Maize, where this is mentioned in the description.

The level of heterosis in maize is quantitatively assessed by comparing the hybrid with its parental forms. In breeding, true heterosis—the superiority of the F1 hybrid over the best parent—is of key importance. True heterosis values exceeding 20% for morphological traits, such as plant height, are often classified as high.

The heterotic effect encompasses grain and green mass yield, root system parameters, ear structure, and resistance to unfavorable factors. The practical application of this phenomenon is based on the differentiation of the maize gene pool into heterotic groups. The use of second-generation seeds leads to inbreeding depression and a decrease in agronomic performance.

General information about the subject — on the page Heterosis.

Sources8

Varieties of Maize 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.

DK216SVZM

Active

Zea mays L. · Maize

Cherchel Vladyslav IUriiovych, Dziubetskyi Borys Volodymyrovych,

3 records

DK4173SVZM

Active

Zea mays L. · Maize

Abel`masov Oleksii Viktorovych, Marochko Valentyna Anatoliivna, Fed`ko Mykola Mykolaiovych, Cherchel` Vladyslav IUriiovych, Dziubets`kyi Borys Volodymyrovych,

3 records