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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.

Klesectra

Terminated

Pelargonium L'Hér. ex Ait. · Geranium

Selecta Klemm GmbH & Co. KG

2 records

Hilmooawak

Active

Echinacea purpurea (L.) Moench · Purple coneflower

TAKII EUROPE B V

2 records

Hilkaylee

Active

Dianthus caryophyllus L. · Carnation

HilverdaKooij B.V

2 records

KLENI17152

Active

Impatiens New Guinea Group · New Guinea Impatiens

Katinka Wilde

2 records

Hilbechwhi

Terminated

Dianthus caryophyllus L. · Carnation

HilverdaKooij B.V

2 records

KLECA21566

Active

Calibrachoa Cerv. · Calibrachoa

Angelo Carrella

2 records

KLECA18510

Active

Calibrachoa Cerv. · Calibrachoa

Klemm + Sohn GmbH & Co. KG^^^Nils Klemm^^^Anita Stöver

2 records

HP221901

Active

Hydrangea paniculata Siebold · Panicled hydrangea

Hydrangea Breeders Association B.V.

2 records

Kiedahfloy

Terminated

Dahlia Cav. · Dahlia

Kieft Bloemzaden B.V.

2 records

IFHEMUL

Active

Heuchera L. · Coral Flower

van den Haak Jelle

3 records

KLEBF24674

Active

Bidens ferulifolia (Jacq.) DC. · Apache beggartick

von Tubeuf Guido

2 records

H220913

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Hydrangea Breeders Association B.V.

2 records

Kicabuya

Active

Impatiens New Guinea Group · New Guinea Impatiens

Ludwig Kientzler

2 records

Icoon

Active

Dahlia Cav. · Dahlia

A. C. Koot

2 records

H218919

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Hydrangea Breeders Association B.V.

2 records

H14

Active

Actinidia chinensis Planch. · Kiwifruit

Skelton Donald

2 records

Kiorotina

Active

Impatiens New Guinea Group · New Guinea Impatiens

Ludwig Kientzler

2 records

KLEDP16214

Active

Dianthus caryophyllus L. · Carnation

Nils Klemm^^^Lena Thiede

2 records

Hacienda

Active

Pisum sativum L. · Pea

Seminis Vegetable Seeds

2 records

Hiltespret

Terminated

Dianthus caryophyllus L. · Carnation

Marius Jan Tas

2 records

H223905

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Hydrangea Breeders Association B.V.

2 records

Hilnotre

Terminated

Dianthus caryophyllus L. · Carnation

HilverdaKooij B.V

2 records

GM9309

Application submitted

Guzmania lingulata (L.) Mez · Drooping spike-guard

Chester Skotak Jr.

2 records

HP220902

Active

Hydrangea paniculata Siebold · Panicled hydrangea

Hydrangea Breeders Association B.V.

2 records

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