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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.

Picador

Active

Pastinaca sativa L. · Parsnip

Elsoms Seeds

2 records

PHELST01

Active

Philodendron bipinnatifidum Schott ex Endl. · Lacy tree philodendron

Elstgeest Young Plants Holding B.V.

2 records

PHALHUMXAM

Active

Phalaenopsis Bl. · Moth Orchid

Anthura B.V.

2 records

POULCY011

Application submitted

Rosa L. · Rose

Poulsen Roser A/S

2 records

Pixie

Terminated

Solanum tuberosum L. · Potato

Zella J. Doig

3 records

Poulpar078

Active

Rosa L. · Rose

Poulsen Roser A/S

3 records

Poulpal104

Active

Rosa L. · Rose

Poulsen Roser A/S

2 records

Ph9e4

Active

Zea mays L. · Maize

PIONEER HI-BRED INTERNATIONAL

2 records

PETSPEBL

Terminated

Petunia Juss. · Petunia

Syngenta Seeds B.V.

2 records

PHALIJBAK

Active

Phalaenopsis Bl. · Moth Orchid

Anthura B.V.

2 records

PH876

Active

Zea mays L. · Maize

PIONEER HI-BRED INTERNATIONAL

2 records

PER6502

Active

Euphorbia pulcherrima Willd. ex Klotzsch · Poinsettia

RUTH KOBAYASHI

2 records

Poulpah115

Active

Rosa L. · Rose

Poulsen Roser A/S

2 records

Poulpah107

Active

Rosa L. · Rose

Poulsen Roser A/S

2 records

PGSSCN

Application submitted

Picea glauca (Moench) Voss · White spruce

Leo Koelewyn, Coolwyn Nurseries Pty Ltd

2 records

Perugina CBG

Active

Cannabis sativa L. · Hemp

Matthias Ghidossi

2 records

Obi

Active

Cannabis sativa L. · Hemp

CIJA Preservation S.L.

2 records

PEPZ0004

Active

Pelargonium peltatum (L.) L'Hér. · Ivy-leaf geranium

Syngenta Participations AG

2 records

Pole Dancer

Active

Phaseolus vulgaris L. · Common bean

Semsearch B.V.

2 records

PacPG18760

Active

Pelargonium grandiflorum (Andrews) Willd. · Regal pelargonium

Martin Geibel c/o Elsner pac Jungpflanzen GbR

2 records

Plagu Blue

Protection expired

Delphinium L. · Larkspur

KUNIHIRO KONISHI

2 records

Paccassis

Terminated

Pelargonium crispum (P. J. Bergius) L'Hér. · Crisped-leaf pelargonium

Martin Geibel c/o Elsner pac Jungpflanzen GbR

2 records

PA4EN171

Active

Brassica napus var. napus · Rapeseed

Bayer CropScience

2 records

OVPEARLS07

Active

Echeveria x gilva E. Walther

Ovata B.V.

2 records

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