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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

Found in these crops

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.

Kneja 530

Terminated

Zea mays L. · Maize

Nikola I. Tomov, Simeon G. Mitev, Kiril N. Hristov, Ivanka G. Ivanova, Dimitrina Y. Ilchovska, Lyuben N. Hinkin

BG
1 record

Kamelia

Withdrawn

Solanum tuberosum L. · Potato

Hodowla Ziemniaka Zamarte sp. z o.o. - Grupa IHAR

PL
1 record

Kneja 180

Terminated

Zea mays L. · Maize

Nikola I. Tomov, Simeon G. Mitev, Geto T. Getov, Lyuben V. Georgiev, Ivanka G. Ivanovs

BG
1 record

Kalistos

Terminated

Triticum aestivum L. · Bread wheat

ANDREAS SPANAKAKIS

DE
2 records

Vitis vinifera L. · Common grape vine

INCONNU (FR)

FR
1 record

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

Ger Beemsterboer

UA
1 record

Narcissus L. · Daffodil

Leenen Innovation B.V.

NL
1 record

Kaita

Active

Festuca pratensis Huds. · Meadow fescue

Lietuvos agrarinių ir miškų mokslų centras

LT
1 record

Jubilatka

Terminated

Phaseolus vulgaris L. · Common bean

Krakowska Hodowla i Nasiennictwo Ogrodnicze POLAN sp. z o.o.

PL
1 record

Kobuko

Active

Glycine max (L.) Merr. · Soybean

Petrychenko Vasyl Florovych, Korniichuk Oleksandr Vasylovych, Bushulian Oleh Volodymyrovych, Kolisnyk Serhii Ivanovych,

UA
2 records

Kobalt

Terminated

Helianthus annuus L. · Sunflower

Patrick Duhigg

UA
2 records

JR2085Z

Terminated

Zea mays L. · Maize

Eckhard Holzhauzen

UA
4 records

Kiyoba

Withdrawn

Cucumis melo L. · Melon

Nunhems B.V.

NL
2 records

Kisweet

Active

Actinidia deliciosa (A. Chev.) C. F. Liang & A. R. Ferguson · Kiwifruit

STANICA FLORINGIUSEPPE ZUCCHERELLIILIESCU LAVINIA MIHAELAMIHAI COSMIN ALEXANDRU

RO
2 records

Citrullus lanatus (Thunb.) Matsum. & Nakai · Watermelon

XINGPING ZHANG

UA
1 record

Zea mays L. · Maize

Maize Research Institute - Kneja (BG)

BG
2 records

Kneja 449

Withdrawn

Zea mays L. · Maize

Maize Research Institute - Kneja (BG)

BG
1 record

Zea mays L. · Maize

KISKUN Kutatóközpont Kft., Kiskunhalas

HU
1 record

K 63 SV

Terminated

Zea mays L. · Maize

Kostiuchenko Viktor Ivanovych

UA
4 records

Karbona

Active

Raphanus sativus L. var. sativus · Radish

Muzhylko Dmytro Valentynovych, Dymchenko Tetiana Mykolaivna, Muzhylko Viktor Valentynovych,

UA
2 records

Kneja 419

Protection expired

Zea mays L. · Maize

Maize Research Institute - Kneja (BG)

BG
1 record

K308

Terminated

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

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

PL
1 record

KM 2165

Active

Zea mays L. · Maize

Oksom Liudmyla Leonidivna, Oksom Volodymyr Polikarpovych, Shabatko Oleksii Oleksiiovych, Karunnyi Vitalii IUriiovych,

UA
2 records

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