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 multiflorum Lam. var. westerwoldicum Wittm. · Westerwolds Ryegrass
Svalöf Weibull (SE)
Lolium x hybridum Hausskn. · Hybrid ryegrass
DLF Seeds A/S
Lolium multiflorum Lam. var. westerwoldicum Wittm. · Westerwolds Ryegrass
R 2n (FR)
Lolium multiflorum Lam. · Italian ryegrass
SOCIETE R.A.G.T.
Lolium x hybridum Hausskn. · Hybrid ryegrass
DLF Seeds A-S, DK
Lolium x hybridum Hausskn. · Hybrid ryegrass
P.BREED.INT.CAMBRIDGE
Raphanus sativus L. var. oleiformis Pers. · Oil radish
PETERSEN| Asmus Soeren Petersen in Fa. P.H. Petersen Saatzucht Lundsgaard GmbH / SCHLATHoeLTER| Michaela Schlathoelter
Lolium perenne L. · Perennial ryegrass
Saatzucht Steinach GmbH & Co KG
Lolium perenne L. · Perennial ryegrass
Skriveri Research Centre
Lolium perenne L. · Perennial ryegrass
Deutsche Saatveredelung AG - DSV (DE)
Trifolium pratense L. · Red clover
Gradin Lars A
x Festulolium Aschers. et Graebn. · Festulolium
HODOWLA ROSLIN SZELEJEWO- DR. WOJEICH MIKULSKI
Lolium perenne L. · Perennial ryegrass
DLF-Seeds A/S
Lolium perenne L. · Perennial ryegrass
Mommersteeg International BV (NL)
Lolium perenne L. · Perennial ryegrass
Saatzucht Steinach GmbH & Co KG
Lolium multiflorum Lam. · Italian ryegrass
DSV Francia
Lolium x hybridum Hausskn. · Hybrid ryegrass
Skriveri Research Centre
Brassica rapa L. var. rapa (L.) Thell. · Turnip
DLF-TRIFOLIUM| DLF-Trifolium A/S
Lolium x hybridum Hausskn. · Hybrid ryegrass
P.BREED.INST.WALES
Lolium perenne L. · Perennial ryegrass
LIMAGRAIN NEDERLAND
Lolium perenne L. · Perennial ryegrass
GIE GRASS (FR)
Citrullus lanatus (Thunb.) Matsum. & Nakai · Watermelon
ZETA SEEDS S.L.
Beta vulgaris Sugar Beet Group · Sugar beet
WIELKOPOLSKA HODOWLA BURAKA CUKROWEGO SP.Z.O.O
Lolium perenne L. · Perennial ryegrass
BOGAERT| Ir. C.W. van den Bogaert c/o Zelder B.V.