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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.

Kerversky

Terminated

Petunia x atkinsiana D. Don · Garden petunia

Priscilla Grace Kerley, David William Kerley, Timothy Edward Kerley, Sarah Elisabeth Kerley

1 record

Julia

Application submitted

Goeppertia roseopicta (Linden) Borchs. & S. Suárez · Rose-painted calathea

Denis-Plants B.V.

1 record

IM6

Terminated

Zea mays L. · Maize

KWS Saat SE, Limagrain Europe S.A.S.

1 record

IGF Four

Active

Vitis vinifera L. · Common grape vine

David W.Cain

1 record

KLEPH14255

Withdrawn

Petunia Juss. · Petunia

Nils Klemm^^^Antonella Capo

1 record

Kopretsur

Terminated

Dianthus L. · Carnation

P.Kooij & Zonen B.V.

1 record

Ionio

Active

Citrus reticulata Blanco x Citrus clementina hort. ex Tanaka · Mandarin

Marco Caruso^^^Giuseppe Russo

1 record

Helios

Active

Humulus lupulus L. · Common hop

S.S. Steiner Inc.

1 record

HP224903

Application submitted

Hydrangea paniculata Siebold · Panicled hydrangea

Hydrangea Breeders Association B.V.

1 record

KLEYSOR

Terminated

Dianthus L. · Carnation

Per Klemm

1 record

KLEVP16485

Withdrawn

Verbena L. · Vervain

Ruijun Li

1 record

Horclemiya

Withdrawn

Clematis lanuginosa Lindl. & Paxton

Hideyasu Harada

1 record

Honeydew

Active

Phalaenopsis Bl. · Moth Orchid

René Schoone

1 record

KLELA24881

Application submitted

Lantana camara L. · Lantana

Angelo Carrella

1 record

Golden Streaks

Terminated

Brassica juncea (L.) Czern. · Brown mustard

TOKITA SEED CO LTD

1 record

Golden Purslane

Withdrawn

Portulaca oleracea L. · Common purslane

Wayne Powell

1 record

Giolla Dearg

Terminated

Crocosmia Planch. · Montbretia

SHEILA HARDING POMEROY

1 record

Kerprelila

Terminated

Petunia x atkinsiana D. Don · Garden petunia

Priscilla Grace Kerley, David William Kerley, Timothy Edward Kerley

1 record

Kerbecasros

Withdrawn

Begonia x tuberhybrida Voss · Tuberous begonia

Priscilla Grace Kerley, David William Kerley, Timothy Edward Kerley, Sarah Elisabeth Kerley

1 record

Kannahime

Active

Fragaria x ananassa Duchesne ex Rozier · Garden strawberry

KAKIMOTO SHOUJI CO. LTD

1 record

GGGR01A

Withdrawn

Vitis vinifera L. · Common grape vine

Stefano Somma

1 record

Gentand 006

Terminated

Gentiana scabra Bunge · Rough gentian

Gartenbau Christoph Andree

1 record

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