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.
Lolium perenne L. · Perennial ryegrass
Instituut voor Landbouw- en Visserijonderzoek (ILVO) Eenheid Plant
Lolium x hybridum Hausskn. · Hybrid ryegrass
ILVO-PLANT 39
Lolium multiflorum Lam. var. westerwoldicum Wittm. · Westerwolds Ryegrass
DEUTSCHE SAATVEREDELUNG AG
Lolium perenne L. · Perennial ryegrass
Dipl.Ing.agr. Heiner Busch in Fa. Deutsche Saatveredelung AG / Dr. Ulf Feuerstein
Lolium perenne L. · Perennial ryegrass
Cebeco Seeds BV (NL)
Lolium perenne L. · Perennial ryegrass
DLF Seeds, s.r.o., CZ
Medicago sativa L. · Alfalfa
Institut National de Recherche pour l'Agriculture l'Alimentation et l'Environnement (INRAE) , Agri-Obtentions S.A.
Beta vulgaris Sugar Beet Group · Sugar beet
MARIBO SEED INT. APS
Beta vulgaris Sugar Beet Group · Sugar beet
KWS SAAT SE and CO KGAA
Citrullus lanatus (Thunb.) Matsum. & Nakai · Watermelon
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
Lolium x hybridum Hausskn. · Hybrid ryegrass
DLF-Trifolium A/S
Triticum durum Desf. · Durum wheat
Eurodur S.A.
Trifolium pratense L. · Red clover
GAYRAND| P. Gayrand c/o AMFO
Trifolium pratense L. · Red clover
Hagberg, Arne
Beta vulgaris Sugar Beet Group · Sugar beet
Dietrich Hauer, Wolfgang Mechelke,
Beta vulgaris Sugar Beet Group · Sugar beet
Strube D&S GMBH
Beta vulgaris Sugar Beet Group · Sugar beet
Ditrikh Khauer, Andrez Look,
Malus domestica (Suckow) Borkh. · Apple
Piet de SONNAVILLE (NL)
Beta vulgaris Sugar Beet Group · Sugar beet
SESVanderhave NV
Beta vulgaris Sugar Beet Group · Sugar beet
SESVanderHave N.V./S.A.
Lolium perenne L. · Perennial ryegrass
DLF Seeds A/S
Lolium multiflorum Lam. · Italian ryegrass
DEUTSCHE SAATVEREDELUNG AG
Lolium x hybridum Hausskn. · Hybrid ryegrass
LFZ Raumberg-Gumpenstein Institut für Pflanzenbau und Kulturlandschaft
Lolium multiflorum Lam. · Italian ryegrass
MHR SEEDS LIMITED