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.

Zimbru

Active

Solanum lycopersicum L. · Tomato

HAZERA SEEDS BV

3 records

Zicatela

Active

Lactuca sativa L. · Lettuce

Vilmorin-Mikado SAS (FR)

3 records

Zucchello

Active

Solanum lycopersicum L. · Tomato

UNITED GENETICS SEEDS CO

3 records

Zailice

Active

Prunus persica (L.) Batsch · Peach

Floyd Zaiger (US)

5 records

Zoe

Active

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

LAMBOSEEDS S.R.L.

2 records

Zapateco

Active

Solanum lycopersicum L. · Tomato

UNITED GENETICS SEEDS CO

2 records

Yumice

Active

Lactuca sativa L. · Lettuce

Syngenta Crop Protection AG

4 records

Zagor

Active

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

MERIDIEM SEEDS S.L.

2 records

Yuko

Active

Capsicum annuum L. · Bell pepper

Vilmorin-Mikado S.A.S.

3 records

Yosemite

Active

Allium cepa L. var. cepa · Onion

K2 Seed Growers, Inc (US)

2 records

Zinfandel

Active

Allium cepa L. var. cepa · Onion

Enza Zaden Beheer B.V.

3 records

Yelsto

Active

Capsicum annuum L. · Bell pepper

Syngenta Crop Protection AG

2 records

Xylora

Active

Solanum lycopersicum L. · Tomato

Axia Vegetable Seeds B.V.

3 records

Yahoo

Active

Capsicum annuum L. · Bell pepper

Hort Seed Mediterrani S.L

3 records

Yellowbar

Active

Capsicum annuum L. · Bell pepper

UNITED GENETICS SEEDS CO

2 records

Xylia

Active

Solanum lycopersicum L. · Tomato

Axia Vegetable Seeds B.V.

3 records

XP 03745864

Terminated

Cucumis melo L. · Melon

Seminis Vegetable Seeds

4 records

Yunque

Active

Capsicum annuum L. · Bell pepper

Hort Seed Mediterrani SL SPAIN

2 records

Yoyoma

Active

Capsicum annuum L. · Bell pepper

ReinSaat KG

2 records

Xacao

Active

Solanum lycopersicum L. · Tomato

Axia NL B.V.

3 records

XPB 247

Protection expired

Phaseolus vulgaris L. · Common bean

ASGROW SEED CO

3 records

Zafrepapil

Active

Freesia Eckl. ex Klatt · Freesia

van Zanten Plants b.v

2 records

Witiza

Active

Lactuca sativa L. · Lettuce

Enza Zaden Beheer B.V.

4 records

Yarden

Active

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

ORIGENE SEEDS Ltd

3 records

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Variety traits

Maturity group 89 063
Yield 67 000
Vigor 53 548
Plant height 51 504
Lodging 50 198
Taste and aroma 36 010
Variety origin 29 523
Productivity 27 845

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Text source

This summary is compiled from the publications listed in the sources and verified by an editor. It contains no legally significant information; it provides agronomic context for registry data rather than the registry data itself.