Variety traits

Maturity group

Maturity group is a biological characteristic of a variety that determines the length of its growing season from emergence to full maturity. This trait is a key tool for planning agronomic operations and selecting varieties suited to the climatic conditions of a region.

Mentioned in descriptions 89 063 varieties reference book.

Maturity group represents a biological characteristic of a variety that determines the duration of the growing season from the moment of seedling emergence to the onset of harvest or full maturity. This trait directly influences the choice of production strategy, allowing agronomists to optimize harvest timing, minimize losses due to crop lodging or over-ripening, and adapt crops to local climate conditions, avoiding risks associated with early frosts or drought periods.

The assessment of the maturity group is conducted within the framework of state variety testing on specialized plots by comparing the variety under study with a zoned standard. The duration of the growing season in days is used as a quantitative indicator. The gradation of groups from early-maturing to late-maturing does not have uniform numerical boundaries for all species, as it is based on the biological characteristics of a specific crop and the conditions of the cultivation zone.

Membership in a maturity group is determined by the genetic characteristics of the variety, however, the rate of progression through phenological phases depends on abiotic factors such as temperature regime, moisture availability, and photoperiodism. Cultivation techniques, including sowing dates and fertilization systems, can adjust maturation timing but do not change the genetic classification of a variety into a specific group.

There is an interconnection between the maturity group and biochemical indicators of product quality, such as protein and gluten content in the grain. For effective utilization of this trait, it is necessary to rely on the results of local trials, as a variety may perform differently under various soil and climatic conditions.

Sources10

Breakdown by crop

Maize maturity group 5 061 Tomato maturity group 2 293 Sunflower maturity group 1 708 Maturity group — soft wheat 1 598 Maize maturity group 1 583 Grape Ripening Period 1 407 Potato maturity group 1 217 Barley Maturity Group 1 086 Pepper maturity groups 1 065 Apple Ripening Groups 890 Bean maturity group 807 Peach Maturity Group 794 Pea Maturity Group 779 Maturity Group — Soybean 777 Rapeseed maturity group 739 Maturity group — sugar beet 700 Cucumber Maturity Groups 670 Lettuce maturity group 589 Grape Ripening Period 579 Maturity group — Perennial ryegrass 564 Sweet Cherry Ripening Period 507 Carrot Maturity Groups 415 Melon maturity groups 410 Maturity group — white cabbage 384

Found in these crops

Maize 4 386 Maize 1 378 Sunflower 1 347 Tomato 1 205 Bread wheat 1 015 Barley 753 Potato 741 Soybean 740 Sugar beet 589 Bell pepper 582 Rapeseed 550 Common bean 518

Varieties that feature this in their description

Selection based on the description text, not official resistance ratings: such data is not available in registers. Mention indicates that the trait is discussed in the variety's sources; see the variety's profile for details on what is specifically stated.

Idilor

Terminated

Capsicum annuum L. · Bell pepper

Clause Tezier, FR

2 records

IN 5543 IMI

Active

Helianthus annuus L. · Sunflower

Pablo Bergada, Francisko Firpo,

4 records

Jaune Saint Vincent

Active

Solanum lycopersicum L. · Tomato

Domaine Public (FR)

2 records

Illusion

Protection expired

Gerbera L. · Gerbera

Schreurs, P.

2 records

Jaschin

Active

Beta vulgaris Sugar Beet Group · Sugar beet

Strube, D

3 records

IMI PR 9

Active

Helianthus annuus L. · Sunflower

Cvejic Sandra, Jocic Sinisa,

3 records

Jacstop

Protection expired

Rosa L. · Rose

Warriner, William A.|Tustin, CA

2 records

J9670Z

Active

Zea mays L. · Maize

Monsanto Tehnology LLC, USA

2 records

IFK Vera

Terminated

Medicago sativa L. · Alfalfa

Vesko Blazhev, Venata Radeva, Anna Ilieva

3 records

J2972Z

Terminated

Zea mays L. · Maize

MONSANTO TECHNOLOGY

3 records

Ice Jacara

Active

Lactuca sativa L. · Lettuce

Syngenta Crop Protection AG

4 records

Jamajka

Active

Triticum aestivum L. · Bread wheat

Hodowla Roslin Strzelce Sp z.o.o. Grupa IHAR

4 records

Hydane

Terminated

Spinacia oleracea L. · Spinach

L. DÆHNFELDT A/S

2 records

Idefix

Active

Zea mays L. · Maize

FREIHERR VON MOREAU SAATZUCHT

2 records

Japel

Active

Solanum lycopersicum L. · Tomato

SEMILLAS FITO, S.A.

2 records

Ibero

Active

Capsicum annuum L. · Bell pepper

CAPITAL GENETIC EBT, S.L.

2 records

Hokent

Active

Fragaria x ananassa Duchesne ex Rozier · Garden strawberry

Instytut Ogrodnictwa - Państwowy Instytut Badawczy

4 records

Hoax

Active

Zea mays L. · Maize

FREIHERR VON MOREAU SAATZUCHT

2 records

Hubal

Terminated

Solanum tuberosum L. · Potato

Hodowla Ziemniaka Zamarte sp. z o.o. - Grupa IHAR

3 records

Ibleor

Terminated

Capsicum annuum L. · Bell pepper

Clause Semences SA (FR)

2 records

Hrabrin

Active

x Triticosecale Wittm. ex A. Camus · Triticale

Dobroudja Agricultural Institute - General Toshevo (BG)

2 records

J7214Z

Active

Zea mays L. · Maize

Monsanto Tehnology LLC, USA

3 records

Hyfive

Active

Allium cepa L. var. cepa · Onion

De Groot en Slot B.V.,Bejo Zaden B.V.

4 records

Hybristar

Terminated

Brassica napus L. · Rapeseed

KWS Momont Recherche Sarl

4 records

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Variety traits

Yield 67 000
Vigor 53 548
Plant height 51 504
Lodging 50 198
Taste and aroma 36 010
Variety origin 29 523
Productivity 27 845
Winter hardiness 27 261

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Text source

This summary is compiled from the publications listed in the sources and verified by an editor. It contains no legally significant information; it provides agronomic context for registry data rather than the registry data itself.