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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.

Sogo Fairyland

Withdrawn

Phalaenopsis Bl. · Moth Orchid

Chiang-Kuei Feng

1 record

San Bernardo

Terminated

Lilium L. · Lily

Vletter & Den Haan Beheer B.V

1 record

Purple Heart

Terminated

Euphorbia pulcherrima Willd. ex Klotzsch · Poinsettia

Florema Young Plants B.V.

1 record

Ravella

Active

Fragaria x ananassa Duchesne ex Rozier · Garden strawberry

Fresh Forward Holding B.V.

1 record

Sempione

Active

Lilium L. · Lily

Vletter & Den Haan Beheer B.V

2 records

Quiet Voices

Terminated

Phalaenopsis Bl. · Moth Orchid

René Schoone

1 record

Purple Rain

Active

Chamelaucium uncinatum Schauer · Geraldton wax

Goldsash Corporation Pty Ltd. (trading as Helix Australia)

1 record

Purple Petra

Active

Eryngium planum L. · Blue eryngo

Gerardus A.M. van den Berg

1 record

Saporro

Terminated

Hibiscus rosa-sinensis L. · Chinese hibiscus

Coöperatieve Vereniging Werkgroep Hibiscus U.A.

1 record

Presto

Terminated

Pelargonium L'Hér. ex Ait. · Geranium

Europe Geranium Diffusion S.A.R.L.

1 record

Rosaria

Application submitted

Fragaria x ananassa Duchesne ex Rozier · Garden strawberry

Stefan Kraege

1 record

SAKZIN013

Terminated

Zinnia x marylandica D. M. Spooner et al.

Sakata Ornamentals Europe A/S

1 record

REGVIO

Terminated

Pelargonium grandiflorum (Andrews) Willd. · Regal pelargonium

Klaus Olbricht

1 record

Regscho

Active

Pelargonium grandiflorum (Andrews) Willd. · Regal pelargonium

Klaus Olbricht

1 record

POULTY038

Application submitted

Rosa L. · Rose

Poulsen Roser A/S

1 record

Regalia Pink

Withdrawn

Pelargonium grandiflorum (Andrews) Willd. · Regal pelargonium

FLORANOVA LTD

1 record

SAKOST8364

Terminated

Osteospermum L. · Osteospermum

Sakata Ornamentals Europe A/S

1 record

Piko Fantasy

Terminated

Phalaenopsis Bl. · Moth Orchid

A.J.M. De Koning Beheer B.V.

1 record

Roxlea Park

Terminated

Lavandula L. · Lavender

CAYFORD GILLIAN PATRICIA

1 record

PROVO005GF

Withdrawn

Phalaenopsis Bl. · Moth Orchid

Friederike von Rundstedt

1 record

POULPAL107

Application submitted

Rosa L. · Rose

Poulsen Roser A/S

1 record

Remy

Withdrawn

Kalanchoe Adans. · Kalanchoe

Knud Jepsen A/S

1 record

Red Miracle

Withdrawn

Anthurium-Andreanum-Hybriden · Anthurium

RijnPlant B.V.

1 record

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