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.

CSM 16001

Withdrawn

Zea mays L. · Maize

CAUSSADE SEMENCES

1 record

COLUMBIA

Withdrawn

Brassica oleracea L. (White Cabbage Group) · White cabbage

ASGROW SEED CO

1 record

CSF 16419

Active

Helianthus annuus L. · Sunflower

CAUSSADE SEMENCES

1 record

CSC2121

Application submitted

Zea mays L. · Maize

Joel Meunier

2 records

Crouchen

Active

Vitis vinifera L. · Common grape vine

INCONNU (FR)

1 record

Crussol

Terminated

Phaseolus vulgaris L. · Common bean

Tezier SA (FR)

1 record

Cyrkon

Withdrawn

Triticum aestivum L. · Bread wheat

Hodowla Roslin Rolniczych Nasiona Kobierzyc Sp.z.o.o.

2 records

Clemencia KWS

Active

Beta vulgaris L. · Beet

KWS SAAT SE & CO.KGAA

1 record

COGOLLO

Terminated

Lactuca sativa L. · Lettuce

SEMILLAS BATLLE, S.A.

1 record

CLEARGRAN CL

Application submitted

Oryza sativa L. · Rice

INSTITUTO HISPANICO DEL ARROZ, S.A. (HISPARROZ)

2 records

CWX4206

Application submitted

Zea mays L. subsp. Mays · Corn

MAS SEEDS

2 records

Cristal F1

Active

Solanum lycopersicum L. · Tomato

Mercier Jean-Claude

1 record

CWS2-1

Terminated

Sorghum bicolor (L.) Moench · Sorghum

CAL-WEST SEEDS

1 record

Crispy Vivi

Active

Tulipa L. · Tulip

Huijg Veredeling B.V.

1 record

CRESTA ROMANA

Terminated

Lactuca sativa L. · Lettuce

Murciana de Vegetales S.L.

2 records

CIV 2

Terminated

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

Zelder BV (NL)

1 record

CH111.16960

Application submitted

Triticum aestivum L. · Bread wheat

AGROSCOPE CHANGINS-WADENSWIL ACW

1 record

CO295

Terminated

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

Agriculture Canada (CA)

1 record

Credo

Withdrawn

Lolium perenne L. · Perennial ryegrass

FRAUEN| Norddeutsche Pflanzenzucht Hans-Georg Lembke KG. Herrn Dr. Martin Frauen / GAUE| Inge Gaue

2 records

CMW3042

Application submitted

Zea mays L. · Maize

Joel Meunier

2 records

Crayon

Terminated

Phaseolus vulgaris L. · Common bean

Domaine Public (FR)

1 record

CSM7658

Terminated

Zea mays L. · Maize

CAUSSADE SEMENCES

1 record

CSM3167

Withdrawn

Zea mays L. · Maize

CAUSSADE SEMENCES

1 record

CPBY13-15

Active

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

CROOKHAM COMPANY

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.