Variety traits
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.
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.
Malus domestica (Suckow) Borkh. · Apple
Société Nouvelle Pépinières et Roseraies Georges Delbard S.A.S.
Lolium perenne L. · Perennial ryegrass
Euro Grass Breeding GmbH Co. KG
Lolium multiflorum Lam. · Italian ryegrass
Saatzucht Steinach GmbH & Co KG
Trifolium repens L. · White clover
Cal/West Seeds (US)
Asparagus officinalis L. · Asparagus
The Regents of the University of California
Trifolium pratense L. · Red clover
FAL Station de Recherche Agronomique Federale (CH)
Lolium x hybridum Hausskn. · Hybrid ryegrass
Beat Boller (CH)
Lolium multiflorum Lam. · Italian ryegrass
RAGT 2N S.A.S
Trifolium pratense L. · Red clover
Beat Boller (CH)
Lolium perenne L. · Perennial ryegrass
RAGT 2N S.A.S
Lolium perenne L. · Perennial ryegrass
GRASSLAND TECHNOLOGY LTD
Malus domestica (Suckow) Borkh. · Apple
Dalival SAS (FR)
Lolium perenne L. · Perennial ryegrass
SEMENCES DE FRANCE
Lolium perenne L. · Perennial ryegrass
Agri-food and Biosciences Institute (AFBI Belfast)
Lolium perenne L. · Perennial ryegrass
PGG Wrightson Seeds
Lolium perenne L. · Perennial ryegrass
Valley Seeds Pty Ltd
Lolium multiflorum Lam. · Italian ryegrass
Capstone Seeds South Africa (Pty) Ltd
Lolium perenne L. · Perennial ryegrass
DLF SEEDS A/S
Lolium multiflorum Lam. · Italian ryegrass
Gentos S.A.
Lolium perenne L. · Perennial ryegrass
DLF SEEDS A/S
Cynodon dactylon (L.) Pers. · Bermuda grass
Cascade International Seed Company
Phleum pratense L. · Timothy grass
W WEIBULL
Lolium x hybridum Hausskn. · Hybrid ryegrass
DSP SA UTILISER CODE S/11444 (CH)/Agroscope (CH)
Lolium multiflorum Lam. · Italian ryegrass
RAGT 2N S.A.S