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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.

Temida

Active

Lolium multiflorum Lam. · Italian ryegrass

Danko Hodowla Roslin Sp.z.o.o.

2 records

Sweet Sicily

Active

Hybrids between Citrus sinensis and Citrus clementina

Giuseppe Reforgiato Recupero, Giuseppe Russo, Santo Recupero

3 records

SV1656

Terminated

Beta vulgaris Sugar Beet Group · Sugar beet

SESVanderhave NV

2 records

Secret Ambition

Active

Hosta Tratt. · Hosta

van den Top Hendrik Jan|3771 PC Barneveld, NL

2 records

Ritchie

Active

Lolium perenne L. · Perennial ryegrass

DLF Seeds A/S

2 records

Prem1A

Active

Malus domestica (Suckow) Borkh. · Apple

Horticulture & Food Research Institute of New Zealand Ltd

2 records

Pink Harmony

Active

Erica x darleyensis Bean · Darley heath

Kurt Kramer

2 records

Marrero

Active

Lilium L. · Lily

IMANSE LELIEVEREDELING B.V.^^^PEACOCK B.V.

2 records

Inca Dawn

Terminated

Solanum tuberosum L. · Potato

SCOTTISH CROP RESEARCH INSTITUTE

2 records

HFY03

Active

Actinidia chinensis Planch. · Kiwifruit

Li Ming Zhang

2 records

Inca Sun

Terminated

Solanum tuberosum L. · Potato

SCOTTISH CROP RESEARCH INSTITUTE

2 records

High Society

Active

Hosta Tratt. · Hosta

Shady Oaks Nursery LLC

2 records

Drumlin

Terminated

Lolium x hybridum Hausskn. · Hybrid ryegrass

Agri-food and Biosciences Institute (AFBI Belfast)

2 records

Dofi Sandra

Active

Prunus salicina Lindl. · Japanese plum

Elvio Bellini^^^Valter Nencetti

3 records

EG1102

Application submitted

Panicum virgatum L. · Switchgrass

University of Georgia Research Foundation

2 records

Falladino

Active

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

DEUTSCHE SAATVEREDELUNG AG

2 records

Dolomit

Active

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

DEUTSCHE SAATVEREDELUNG AG

2 records

EG1101

Active

Panicum virgatum L. · Switchgrass

University of Georgia Research Foundation

2 records

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