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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.

HP221904

Active

Hydrangea paniculata Siebold · Panicled hydrangea

Hydrangea Breeders Association B.V.

2 records

HP220901

Active

Hydrangea paniculata Siebold · Panicled hydrangea

Hydrangea Breeders Association B.V.

2 records

IFHEPR

Active

Heuchera L. · Coral Flower

van den Haak Jelle

2 records

IFANFA

Active

Anemone hupehensis Lemoine · Japanese anemone

Spil Glenn

2 records

Hilmoocour

Active

Echinacea purpurea (L.) Moench · Purple coneflower

TAKII EUROPE B V

3 records

Gelato Pineapple

Active

Osteospermum L. · Osteospermum

Decock Youngplants S.P.R.L.

2 records

Enectacalm

Active

Cannabis sativa L. · Hemp

Jacopo Vladimiro Paolini

2 records

Freeze

Terminated

Guzmania Ruiz et Pav. · Guzmania

Nicolaas D.M. Steur^^^Elly Bak

2 records

HP221902

Active

Hydrangea paniculata Siebold · Panicled hydrangea

Hydrangea Breeders Association B.V.

2 records

HP217903

Active

Hydrangea paniculata Siebold · Panicled hydrangea

Hydrangea Breeders Association B.V.

2 records

HER2009T06

Active

Taxus baccata L. · European yew

Herplant B.V.

2 records

Elidia

Active

Ocimum basilicum L. · Basil

Enza Zaden Beheer B.V.

2 records

Duracla

Active

Guzmania Ruiz et Pav. · Guzmania

Chester Skotak Jr., HILL'S RAINGREEN TROPICALS-HERB HILL

2 records

Duevipifiz

Active

Pelargonium zonale (L.) L'Hér. · Horseshoe pelargonium

Tobias Dümmen

2 records

Duesalaspla

Active

Pelargonium zonale (L.) L'Hér. · Horseshoe pelargonium

Tobias Dümmen

2 records

Duemond

Active

Euphorbia pulcherrima Willd. ex Klotzsch · Poinsettia

MARGA DÜMMEN

2 records

Hilredbu

Terminated

Dianthus caryophyllus L. · Carnation

HilverdaKooij B.V

2 records

Fisnics Purdeep

Terminated

Impatiens New Guinea Group · New Guinea Impatiens

Birgit Hofmann c/o Flora-Nova Pflanzen GmbH

2 records

Hilglatrop

Active

Limonium sinuatum (L.) Mill. · Statice

HilverdaKooij B.V

2 records

Flevo Snow

Active

Gladiolus L. · Gladiolus

M.G.T. Snoek Beheer B.V.

2 records

H217902

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Hydrangea Breeders Association B.V.

2 records

H223906

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Hydrangea Breeders Association B.V.

2 records

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