Variety traits

Ploidy

Ploidy is the number of sets of chromosomes in a cell nucleus, which determines the biological properties and productivity of a variety. This trait is used in breeding to modify morphological parameters of plants, such as increasing fruit size.

Mentioned in descriptions 10 934 varieties reference book.

Ploidy reflects the number of sets of chromosomes in a plant cell nucleus. An organism can be diploid, having two sets, haploid with one, or polyploid, containing three or more sets. In agricultural practice, this indicator is an important factor in the productivity and stability of a variety, as polyploidy allows for targeted changes in the size of plant cells and organs.

The choice of ploidy level depends on the cultivation goals of a specific crop. The effect of polyploidy is not universal: while it serves as a tool for increasing productivity in some species, such as sugar beet, a diploid set remains critical for others to ensure normal seed set.

Ploidy assessment is conducted during the breeding process and state variety trials using flow cytometry, direct cytogenetic chromosome analysis, or indirect methods based on stomatal cell size. During trials, the stability of the chromosome set is verified, as any deviations, such as the appearance of aneuploid forms, can lead to reduced yields and increased crop variability.

Sources10

Breakdown by crop

Ploidy — Perennial Ryegrass 853 Apple Ploidy 479 Ploidy — Sugar beet 465 Ploidy — Italian ryegrass 278 Ploidy — Red Clover 252 Ploidy — Italian ryegrass 190 Ploidy — Hybrid Ryegrass 110 Watermelon ploidy 100 Ploidy — Westerwold ryegrass 95 Ploidy — Fodder Beet 55 Ploidy — Rye 49 Ploidy of pear 40 Mandarin Ploidy 31 Ploidy — Meadow Fescue 29 Citrus Ploidy 25 Beet Ploidy 24 Ploidy of Festulolium 24 Apple Ploidy 23 Ploidy — Japanese plum 21 Lily Ploidy 19 Alstroemeria Ploidy 19 Ploidy of orchardgrass 17 Ploidy of German chamomile 17 Ploidy of the European Plum 14

Found in these crops

Perennial ryegrass 853 Apple 498 Sugar beet 466 Italian ryegrass 278 Red clover 252 Italian ryegrass 191 Hybrid ryegrass 110 Watermelon 102 Westerwolds Ryegrass 95 Mangelwurzel 55 Rye 49 European pear 42

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.

Odetta

Terminated

Beta vulgaris Sugar Beet Group · Sugar beet

KWS Saat AG, DE

2 records

Tetra Gain SLT

Active

Lolium perenne L. · Perennial ryegrass

PURE SEED TESTING

2 records

Melistar

Active

Lolium multiflorum Lam. var. westerwoldicum Wittm. · Westerwolds Ryegrass

ILVO - Plant Toegepaste (BE)

2 records

Lynetta KWS

Terminated

Beta vulgaris Sugar Beet Group · Sugar beet

KWS Saat AG, DE

2 records

Prana

Active

Zea mays L. · Maize

MONSANTO TECHNOLOGY

2 records

Mertaki

Terminated

Lolium multiflorum Lam. ssp. italicum (A. Br.) Volkart · Italian ryegrass

CAUSSADE SERVICES BENELUX

2 records

Meritra RvP

Terminated

Lolium multiflorum Lam. ssp. italicum (A. Br.) Volkart · Italian ryegrass

ILVO-PLANT 39

2 records

Jocelinda KWS

Terminated

Beta vulgaris Sugar Beet Group · Sugar beet

KWS SAAT SE & CO.KGAA

2 records

Jarhama

Active

Beta vulgaris Sugar Beet Group · Sugar beet

SESVANDERHAVE, N.V./S.A.

2 records

Multisolc ax 9

Active

Lolium multiflorum Lam. ssp. italicum (A. Br.) Volkart · Italian ryegrass

ENRIC MARTI MELIA

2 records

Fregate

Terminated

Beta vulgaris Sugar Beet Group · Sugar beet

SESVANDERHAVE NV-SA, BE

3 records

Mayos

Active

Beta vulgaris Sugar Beet Group · Sugar beet

Maribo Seed International ApS

2 records

KI 1239

Terminated

Beta vulgaris Sugar Beet Group · Sugar beet

I. Uchkunov, K. Uchkunova, V. Veginov, I. Ivanov, I. Popov, D. Panayotova, S. Takov, E. Demireva

3 records

BTS 370

Terminated

Beta vulgaris Sugar Beet Group · Sugar beet

KWS SAAT SE & CO.KGAA

2 records

GREGAL

Active

Citrus xtangelo J. W. Ingram & H. E. Moore · Tangelo

IVIA

2 records

BTS 4880

Active

Beta vulgaris Sugar Beet Group · Sugar beet

Betaseed

2 records

Alesy

Active

Avena strigosa Schreb. · Black oat

Jouffray-Drillaud SA (FR)

2 records

Escompta

Terminated

Beta vulgaris Sugar Beet Group · Sugar beet

Syngenta Seeds

2 records

Danakyl

Active

Lolium multiflorum Lam. ssp. italicum (A. Br.) Volkart · Italian ryegrass

R 2n (FR)

2 records

Conil

Active

Beta vulgaris Sugar Beet Group · Sugar beet

SESVANDERHAVE, N.V./S.A.

3 records

Adeptus

Terminated

Beta vulgaris Sugar Beet Group · Sugar beet

VanderHave Sugar Beet Seed B.V.

2 records

Atocha KWS

Terminated

Beta vulgaris Sugar Beet Group · Sugar beet

KWS SAAT SE & CO.KGAA

2 records

Agro-poly

Terminated

Beta vulgaris Fodder Beet Group · Mangelwurzel

VEREDELINGSSTATION AG

2 records

Mayan Queen

Terminated

Solanum tuberosum L. · Potato

SCOTTISH CROP RESEARCH INSTITUTE

2 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.