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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.

Hyperion

Active

Pisum sativum L. · Pea

Seminis Vegetable Seeds

NL
6 records

Holliday

Terminated

Brassica napus var. napus · Rapeseed

Norddeutsche Pflanzenzucht Hans-Georg Lembke KG

DK
4 records

GTW Korona

Active

Triticum aestivum L. · Bread wheat

Kostadin V. Kostov, Ivan T. Panayotov, Ivan D. Todorov, Nikolay A. Tsenov, Ivanka S. Stoeva, Iliya V. Iliev, Vanya D. Kiryakova, Tatyana P. Petrova,

BG
4 records

Hynergy

Terminated

Triticum aestivum L. · Bread wheat

Saaten Union Recherche (FR)

FR
4 records

Hokey

Active

x Triticosecale Wittm. ex A. Camus · Triticale

V. Georgiev, Hr. Stoyanov, T. Petrova, V. Ivanova, Y. Stanoeva, S. Doneva

BG
4 records

GT24

Active

Lolium perenne L. · Perennial ryegrass

PURE SEED TESTING

CZ
3 records

Haljas

Terminated

Alopecurus pratensis L. · Meadow foxtail

Herbert Korjus 80%, Aleksander Adojaan 20%

EE
4 records

Green Star

Active

Cucumis melo L. · Melon

UNITED GENETICS SEEDS CO

PT
4 records

GW9023

Terminated

Carthamus tinctorius L. · Safflower

GLOBAL AGRO INC.

IT
3 records

Hido

Active

Zea mays L. · Maize

MAY AGRO SEED CORP.

IT
5 records

Gudmund

Terminated

Hordeum vulgare L. · Barley

Lars A Gradin

SE
4 records

GTW Kristi

Active

Triticum aestivum L. · Bread wheat

K. Kostov, A. Karaivanov, I. Panayotov, I. Todorov, N. Tsenov, I. Stoeva, I. Iliev, V. Kiryakova, T. Petrova

BG
4 records

Holdlander

Active

Triticum aestivum L. subsp. spelta (L.) Thell. · Spelt

ROSSEN & CO B.V.

NL
4 records

Heliamax

Terminated

Helianthus annuus L. · Sunflower

R 2n (FR)

FR
3 records

Grethel

Terminated

Triticum aestivum L. · Bread wheat

Florimond Desprez Veuve et Fils, FR

FR
4 records

Grimsey

Active

Cucurbita pepo L. · Field pumpkin

Rijk Zwaan Zaadteelt en Zaadhandel B.V.

NL
5 records

Headliner

Protection expired

Pisum sativum L. · Pea

VELDHUYZEN VAN ZANTEN JASPER ENGEL

IT
4 records

Grimalda

Active

Lolium perenne L. · Perennial ryegrass

KWEEKBEDRIJF C.I.V.

DK
5 records

Grifone

Active

Solanum lycopersicum L. · Tomato

Enza Zaden Beheer B.V.

NL
4 records

Green Hornet

Active

Festuca arundinacea Schreb. · Tall fescue

American Grass Seed Producers

IT
4 records

Helios

Active

Brassica oleracea L. (Brussels Sprouts Group) · Brussels sprouts

BEJO ZADEN

NL
4 records

Greenfield

Terminated

Lactuca sativa L. · Lettuce

Harris Moran Seed Company

NL
3 records

HID3347

Terminated

Zea mays L. · Maize

Syngenta Participations AG

UA
4 records

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