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.

LG31221

Active

Zea mays L. · Maize

Roland Debeuf

3 records

Jador

Active

Glycine max (L.) Merr. · Soybean

Semican INC (CA)

HR UA

3 records

Klosi CS

Application submitted

Zea mays L. · Maize

CAUSSADE SEMENCES

2 records

Kontras YG

Terminated

Zea mays L. · Maize

KWS SAAT SE & CO.KGAA

2 records

LFN1973

Terminated

Zea mays L. · Maize

Mas Seeds S.A.S.

3 records

Kontigos YG

Active

Zea mays L. · Maize

KWS SAAT SE & CO.KGAA

2 records

Klimt YG

Active

Zea mays L. · Maize

KWS SAAT SE & CO.KGAA

2 records

Kefrancos YG

Active

Zea mays L. · Maize

KWS SAAT SE & CO.KGAA

2 records

Kazart

Active

Glycine max (L.) Merr. · Soybean

Semican INC (CA)

HR UA

5 records

Joker

Active

Allium cepa L. var. cepa · Onion

Asgrow Seed Company (US)

2 records

Karol

Terminated

Avena sativa L. · Oat

Instytut Hodowli i Aklimatyzacji Roslin Panstwowy Instytut Badawczy

AT PL

4 records

Lazurit

Active

Oryza sativa L. · Rice

Institute of Rice of National Academy Ukraine, Antonivka UA

HU UA

3 records

Lautario

Active

Zea mays L. · Maize

KWS SAAT SE & CO.KGAA

3 records

Ionexxo

Active

Zea mays L. · Maize

DOW AgroSciences

3 records

Keridos YG

Active

Zea mays L. · Maize

KWS SAAT SE & CO.KGAA

2 records

Kalla

Active

Brassica napus L. · Rapeseed

Lantmaennen ek foer

EE LT

2 records

Kalendula YG

Active

Zea mays L. · Maize

KWS SAAT SE & CO.KGAA

2 records

Iskra KWS

Terminated

Beta vulgaris Sugar Beet Group · Sugar beet

Dietrich Hauer, Rudolf Jansen, Wolfgang Mechelke,

DE UA

2 records

Impreza

Withdrawn

Brassica napus var. napus · Rapeseed

JONSSON BODIL| Bodil Jonsson c/o Lantmaennen SW Seed AB / VASSORT| Pascal Vassort c/o Lantmaennen SW Seed AB

DE DK

2 records

Karmelita

Application submitted

Glycine max (L.) Merr. · Soybean

Monich Ruslan Vasylovych

SI UA

3 records

KXC5362

Active

Zea mays L. · Maize

KWS SAAT SE & CO.KGAA

IT UA

3 records

Junkfrau

Protection expired

Gerbera jamesonii Bolus ex Hook. f. · Barberton daisy

Florist De Kwakel B.V. Gerbera Kulturen

HU PL

2 records

Ida

Terminated

Lupinus albus L. · White lupin

GAERDITZ STEFAN| Stefan M. Gaerditz

CZ DE

2 records

Kws Vigento

Active

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

KWS SAAT SE&CO.KGaA, DE

2 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.