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
Valley Seeds Pty Ltd., Valley Seeds Pty Ltd.
Lolium perenne L. · Perennial ryegrass
Zelder BV (NL)
Lolium x hybridum Hausskn. · Hybrid ryegrass
Societe Eraf (FR)
Citrullus lanatus (Thunb.) Matsum. & Nakai · Watermelon
Seminis Vegetable Seeds
Dactylis glomerata L. · Cocksfoot
Poznanska Hodowla Roslin Sp. z o.o
Lolium multiflorum Lam. · Italian ryegrass
D'EUGENIO SEMENTI
Lolium perenne L. · Perennial ryegrass
DLF B.V.
Lolium perenne L. · Perennial ryegrass
Carneau Freres SA (FR)
Beta vulgaris Sugar Beet Group · Sugar beet
KWS SAAT SE and CO KGAA
Agrostis stolonifera L. · Creeping bentgrass
JACKLIN SEED
Beta vulgaris Sugar Beet Group · Sugar beet
SYNGENTA WINTER OILSEED AB
Lolium multiflorum Lam. · Italian ryegrass
PHP PETERSEN
Lolium multiflorum Lam. · Italian ryegrass
João António da Costa Faria Medeiros Pereira
Sinapis alba L. · White mustard
VEREDELINGSSTATION AG
Lolium perenne L. · Perennial ryegrass
Aberystwyth University (IBERS)
Lolium perenne L. · Perennial ryegrass
ABERYSTWYTH UNIVERSITY
Lolium x hybridum Hausskn. · Hybrid ryegrass
Aberystwyth University (IBERS) Frau Sheena Duller
Lolium x hybridum Hausskn. · Hybrid ryegrass
Llinos Jones c/o Welsh Plant Breeding Station
Lolium perenne L. · Perennial ryegrass
GERMINAL IRELAND LTD
Lolium perenne L. · Perennial ryegrass
Saatzucht Steinach GmbH & Co KG
Lolium perenne L. · Perennial ryegrass
RAGT 2n, FR
Citrullus lanatus (Thunb.) Matsum. & Nakai · Watermelon
Syngenta Participations AG
Trifolium pratense L. · Red clover
Institute of Grassland & Environmental Research Welsh Plant Breeding Station
Lolium perenne L. · Perennial ryegrass
IGER Institute of Grassland & Environmental Research (GB)