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.

Kazik

Terminated

Cucumis melo L. · Melon

Enza Zaden Beheer B.V.

3 records

Kodiak

Active

Spinacia oleracea L. · Spinach

Rijk Zwaan Zaadteelt en Zaadhandel B.V.

3 records

Katelego

Active

Zea mays L. · Maize

KWS SAAT SE & CO.KGAA

4 records

Kolkid

Terminated

Helianthus annuus L. · Sunflower

KOIPESOL S.A.

3 records

Karina

Active

Cucumis sativus L. · Cucumber

GAVRISh SERGEJ FEDOROVICh / PORTYaNKIN ALEKSEJ EVGEN'EVICh / ShAMShINA ANNA VYaChESLAVOVNA / ShEVKUNOV VALERIJ NIKOLAEVICh

3 records

Kalao

Terminated

Oryza sativa L. · Rice

Sud Cereales (FR)

3 records

Julija

Terminated

Glycine max (L.) Merr. · Soybean

Institut za ratarstvo i povrtarstvo, Novi Sad (RS)

3 records

Klass

Active

Solanum lycopersicum L. · Tomato

Seminis SVS Holland, NL

3 records

Kobras

Active

Zea mays L. · Maize

KWS SAAT SE & CO.KGAA

3 records

KIS Liza

Active

Festuca arundinacea Schreb. · Tall fescue

KIS / KIS

3 records

Kishi

Active

Allium fistulosum L. · Welsh onion

TAKII and CO LTD

3 records

Kamarillas

Active

Zea mays L. subsp. mays (Maize Group) · Maize

LEIPERT Rainer, DE

3 records

Joko

Active

Malus domestica (Suckow) Borkh. · Apple

Rudolfs Dumbravs

4 records

Kalocsai 90

Protection expired

Capsicum annuum L. · Bell pepper

Zoldsegtermesztesi Kutato Intezet Rt Fuszerpaprika Kutato Allomas

3 records

Kalliroi

Active

Vicia sativa L. · Common vetch

HAO-DEMETER-Fodder Crops and Pastures Institute

3 records

Kapizera

Active

Capsicum annuum L. · Bell pepper

Syngenta Seeds B.V.

3 records

Kajus

Active

Triticum aestivum L. · Bread wheat

Strube Research GmbH&Co KG

4 records

Kanata

Active

Glycine max (L.) Merr. · Soybean

Andre Letourneau, Alain Letourneau,

5 records

Kinder PV

Active

Oryza sativa L. · Rice

Polenghi Giandomenico

4 records

Jubiley 100

Terminated

Hordeum vulgare L. · Barley

H. Gorastev, R. Ivanova, N. Lazarov, S. Navushtanov, N. Gorasteva

4 records

Joplin

Protection expired

Brassica napus var. napus · Rapeseed

LENA BENGTSSON

6 records

Jancis

Active

Trifolium pratense L. · Red clover

Biruta Jansone, Sarmite Rancane

4 records

Jaleo

Active

Asparagus officinalis L. · Asparagus

VILMORIN, S.A.

3 records

Kedvenc

Active

Papaver somniferum L. · Opium poppy

Herbanova Gyógynövénykutató Bt., Budapest

3 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.