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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

Found in these crops

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.

Stelvio

Active

Cucumis sativus L. · Cucumber

Rijk Zwaan Zaadteelt en Zaadhandel B.V.

NL
5 records

Stach

Active

Secale cereale L. · Rye

Hodowla Roslin Smolice Sp.z o.o Grupa IHAR

PL
3 records

Sorzano

Active

Capsicum annuum L. · Bell pepper

RAMIRO ARNEDO, S.A.

ES
3 records

Splendor

Active

Citrullus lanatus (Thunb.) Matsum. & Nakai · Watermelon

SAKATA SEED AMERICA INC US

FR
3 records

Splash

Active

Cucumis sativus L. · Cucumber

Monsanto Vegetable IP Management B.V.

NL
4 records

x Triticosecale Wittm. ex A. Camus · Triticale

Saaten-Union

PL
4 records

Allium schoenoprasum L. · Chives

Vilmorin-Mikado Denmark

PL
3 records

Sombra

Active

Cucurbita maxima Duchesne · Giant pumpkin

Johnny's Selected Seeds

NL
3 records

Solor

Active

Cucurbita maxima Duchesne · Giant pumpkin

DE BOLSTER VOF

NL
4 records

Stoat

Active

Spinacia oleracea L. · Spinach

Rijk Zwaan Zaadteelt en Zaadhandel B.V.

NL
3 records

Brassica oleracea L. (Broccoli Group) · Broccoli

MONSANTO VEGETABLE IP MANAGEMENT B.V.

NL
3 records

Speedia

Active

Brassica oleracea L. (Brussels Sprouts Group) · Brussels sprouts

BEJO ZADEN

NL
3 records

Sova

Active

Triticum aestivum L. · Bread wheat

Hodowla Roslin Strzelce Sp z.o.o. Grupa IHAR

PL
4 records

Starena

Active

Lactuca sativa L. · Lettuce

Syngenta Seeds B.V.

NL
7 records

Sokkar

Active

Cucumis melo L. · Melon

Paul Degreef

UA
4 records

Stellita

Active

Lactuca sativa L. · Lettuce

Syngenta Seeds B.V.

NL
7 records

Sobek

Active

Capsicum annuum L. · Bell pepper

Syngenta Seeds B.V.

NL
3 records

Sparrow

Active

Spinacia oleracea L. · Spinach

Rijk Zwaan Zaadteelt en Zaadhandel B.V.

NL
4 records

Skyview

Active

Cucumis sativus L. · Cucumber

Rijk Zwaan Zaadteelt en Zaadhandel B.V.

NL
3 records

Sonoyta

Active

Capsicum annuum L. · Bell pepper

Nunhems B.V.

NL
4 records

Sirius

Active

Trifolium resupinatum L. · Persian clover

FERTIPRADO

PT
3 records

Skytree

Active

Brassica oleracea L. (Broccoli Group) · Broccoli

MONSANTO VEGETABLE IP MANAGEMENT B.V.

NL
4 records

Skyteam

Active

Cucumis sativus L. · Cucumber

Rijk Zwaan Zaadteelt en Zaadhandel B.V.

NL
6 records

Sideral

Active

Phaseolus vulgaris L. · Common bean

GSN Semences SAS (FR)

FR
4 records

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