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agronom.cc cultivar database

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.

PH 13 C 5

Active

Zea mays L. · Maize

Pioneer Overseas Corporation, USA

UA
8 records

PHD 0 G

Active

Zea mays L. · Maize

PIONEER OVERSEAS CORPORATION

UA
7 records

ES Cirrius

Active

Zea mays L. · Maize

Pierre CAROLO

AT DE UA
9 records

ES Hornet

Active

Zea mays L. · Maize

Pierre CAROLO

BG HU IT UA
8 records

ES Inventive

Active

Zea mays L. · Maize

Pierre CAROLO

AT DE UA
9 records

Ph1k2

Active

Zea mays L. · Maize

PIONEER HI-BRED INTERNATIONAL

HU UA
5 records

PH1M3D

Active

Zea mays L. · Maize

PIONEER HI-BRED INTERNATIONAL

5 records

PH5DR

Active

Zea mays L. · Maize

PIONEER HI-BRED INTERNATIONAL

6 records

KC 4647

Active

Zea mays L. · Maize

Maize Research Institute - Kneja (BG)

BG
3 records

LID3260C

Active

Zea mays L. · Maize

Euralis Semences

IT SI
5 records

LMH3161

Active

Zea mays L. · Maize

Mas Seeds S.A.S.

UA
4 records

PHPJD

Active

Zea mays L. · Maize

PIONEER HI-BRED INTERNATIONAL

3 records

PHJ8R

Active

Zea mays L. · Maize

PIONEER HI-BRED INTERNATIONAL

3 records

PHH54

Active

Zea mays L. · Maize

PIONEER HI-BRED INTERNATIONAL

3 records

PHE6W

Active

Zea mays L. · Maize

PIONEER HI-BRED INTERNATIONAL

3 records

PH714

Active

Zea mays L. · Maize

PIONEER HI-BRED INTERNATIONAL

3 records

Ph38b

Active

Zea mays L. · Maize

PIONEER HI-BRED INTERNATIONAL

3 records

Ph13am

Active

Zea mays L. · Maize

PIONEER HI-BRED INTERNATIONAL

3 records

PHAVN

Active

Zea mays L. · Maize

PIONEER HI-BRED INTERNATIONAL

3 records

PH6MN

Active

Zea mays L. · Maize

PIONEER HI-BRED INTERNATIONAL

3 records

Ruse 555

Terminated

Zea mays L. · Maize

S. Mitev, P. Mitev, G. Hristova, P. Momchilova, M. Vachkova, H. Koleva

BG
3 records

NPID3757

Active

Zea mays L. · Maize

Syngenta Participations AG

UA
3 records

DK2965ZSZM

Active

Zea mays L. · Maize

Fedko Mykola Mykolaiovych, Cherchel Vladyslav IUriiovych, Dziubetskyi Borys Volodymyrovych,

UA
3 records

DK959MV

Active

Zea mays L. · Maize

Ilchenko Larysa Anatoliivna, Cherchel Vladyslav IUriiovych, Dziubetskyi Borys Volodymyrovych,

UA
3 records