Variety traits

Uniformity

Uniformity is an indicator of the homogeneity of a seed lot or plants in a crop based on traits such as size, height, maturity date, and habitus. High uniformity ensures even emergence and yield stability, which is critical for variety assessment and product quality.

Mentioned in descriptions 10 270 varieties reference book.

In agronomy and seed production, seed uniformity defines their homogeneity in size, most often thickness, which influences sowing quality. Crop uniformity characterizes the homogeneity of the plant stand in terms of height, phenological stage timing, and general plant habitus, which is important for the efficiency of mechanical harvesting.

During laboratory seed analysis, the indicator is expressed as a percentage representing the sum of the two most representative adjacent fractions. In variety testing, plant uniformity is evaluated visually or through the coefficient of variation of morphological traits. The lower the coefficient of variation, the higher the level of variety uniformity is considered to be.

The level of this trait depends on both the genetic characteristics of the variety and environmental conditions, including agronomic practices and meteorological factors during the seed formation period. Material with a uniformity of at least 80% is considered standard, and values below this threshold require mandatory calibration of the lot before sowing.

Sources10

Breakdown by crop

Tomato Uniformity 81 Uniformity — White Cabbage 79 Barley grain uniformity 68 Carrot uniformity 51 Potato Uniformity 47 Uniformity — Cauliflower 45 Uniformity of lettuce 40 Pepper uniformity 38 Radish uniformity 31 Uniformity — Onion 30 Uniformity of cucumber 23 Sunflower uniformity 21 Uniformity — Onion 20 Uniformity — soft wheat 19 Uniformity — Broccoli 16 Triticale Uniformity 15 Watermelon Uniformity 14 Bean uniformity 14 Uniformity — Brussels sprout 13 Uniformity — Red Cabbage 12 Uniformity of zucchini 11 Uniformity — Leek 10 Uniformity of Chrysanthemum 10 Pea uniformity 10

Found in these crops

Tomato 944 Bell pepper 415 Lettuce 371 Cucumber 272 Potato 256 White cabbage 242 Melon 231 Carrot 215 Cauliflower 192 Field pumpkin 149 Maize 146 Common bean 146

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.

Larsen

Active

Lactuca sativa L. · Lettuce

MORAVOSEED

3 records

Kumpel

Active

Triticum aestivum L. · Bread wheat

SECOBRA RECHERCHES S.A.S

5 records

Farmbeat

Active

Zea mays L. · Maize

SeedGenetic GmbH

DE IT

4 records

Hytra

Protection expired

Trifolium hybridum L. · Alsike clover

Svalöf Weibull (SE)

DE HR SI

3 records

Ibis

Active

Allium cepa L. var. cepa · Onion

Hazera Seeds B.V.

CZ NL

4 records

Grandessa

Terminated

Brassica oleracea L. (Cauliflower Group) · Cauliflower

L. DÆHNFELDT A/S

DK FR IT

3 records

Farmoritz

Active

Zea mays L. · Maize

Ludwig Feldmeier

IT UA

4 records

Castillon

Protection expired

Lactuca sativa L. · Lettuce

Seminis Vegetable Seeds

ES FR

4 records

Cancan

Active

Lactuca sativa L. · Lettuce

Hazera Seeds B.V.

4 records

Chief

Terminated

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

Bejo Zaden B.V.

NL PL SK

3 records

Balmoral

Active

Lactuca sativa L. · Lettuce

Horticulture Research International (GB)/Clause Semences SA (FR)

3 records

BRV2309D

Active

Zea mays L. · Maize

Pioneer Overseas Corporation, Pioneer Hi-Bred International Inc.

AT IT

4 records

Callos CL

Active

Brassica napus var. napus · Rapeseed

Limagrain Europe S.A.S

ES UA

4 records

Asta

Active

Pisum sativum L. · Pea

R.J. MANSHOLT'S VEREDELINGSBEDRIJF B.V.

CZ DK PL

7 records

Xaroma

Active

Lactuca sativa L. · Lettuce

Enza Zaden Beheer B.V.

5 records

Warsa

Terminated

Allium cepa L. var. cepa · Onion

PLANTICO HODOWLA I NASIENNICTWO OGRODNICZE ZIELONKI SP. Z O.O.

NL PL

3 records

Zaipeo

Protection expired

Prunus persica (L.) Batsch · Peach

ZAIGER FLOYD

FR IT

5 records

Zuhrasa

Active

Solanum lycopersicum L. · Tomato

Rijk Zwaan Zaadteelt en Zaadhandel B.V.

NL UA

6 records

Zanardi

Active

Lactuca sativa L. · Lettuce

Rijk Zwaan Zaadteelt en Zaadhandel B.V.

7 records

Uniroy

Protection expired

Pisum sativum L. · Pea

Royal Sluis Vegetables BV (NL)

FR NL

4 records

Whitella

Active

Raphanus sativus L. var. sativus · Radish

Hazera Seeds B.V.

NL UA

3 records

Yosun

Active

Chrysanthemum L. · Chrysanthemum

Vandenberg Cornelis P

IT NL

3 records

Yac

Terminated

Cucumis melo L. · Melon

CLAUSE TEZIER,S.A.

ES FR

3 records

Wasmiya

Active

Solanum lycopersicum L. · Tomato

Rijk Zwaan Zaadteelt en Zaadhandel B.V.

NL UA

6 records

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Variety traits

Maturity group 89 063
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

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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.