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.
Pyrus communis L. · European pear
Information not available - Contact NL authorities
Trifolium pratense L. · Red clover
Malopolska Hodowla Roslin Spolka z o.o.
Malus domestica (Suckow) Borkh. · Apple
J Bick Griffith (US)
Prunus L. · Plum
CHAMBERLIN THOMAS O.
Lolium multiflorum Lam. ssp. italicum (A. Br.) Volkart · Italian ryegrass
GRASSLANDS DIVISION
Beta vulgaris Sugar Beet Group · Sugar beet
NOVARTIS SEEDS A.B.
Beta vulgaris Fodder Beet Group · Mangelwurzel
Malopolska Hodowla Roslin Spolka z o.o.
Matricaria recutita L. · German chamomile
Isaac, Otto
Prunus L. · Plum
GRUPPE| Prof.Dr. W. Gruppe Justus-Liebig-Universitaet / SCHMIDT H.| Prof. Dr. H. Schmidt Justus-Liebig-Universitaet
Beta vulgaris Fodder Beet Group · Mangelwurzel
Malopolska Hodowla Roslin Spolka z o.o.
Lolium perenne L. · Perennial ryegrass
BAUKLOH| Dr. Hans Baukloh in Fa. KWS SAAT AG
Triticum durum Desf. · Durum wheat
G.A.E. RECHERCHE
Lolium perenne L. · Perennial ryegrass
DLF Seeds A/S
Citrullus lanatus (Thunb.) Matsum. & Nakai · Watermelon
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
Lolium multiflorum Lam. · Italian ryegrass
PGG Wrightson Seeds
Poa pratensis L. · Kentucky bluegrass
ESKUSA GmbH Herrn Dr. Fred Eickmeyer
Phleum pratense L. · Timothy grass
Saatzucht Steinach GmbH & Co KG
Lolium multiflorum Lam. · Italian ryegrass
D'EUGENIO SEMENTI
Trifolium pratense L. · Red clover
Hrynyk Ihor Volodymyrovych, Havryliuk Mykhailo Serhiiovych, Bozhenko Anatolii Ivanovych,
Matricaria recutita L. · German chamomile
Juergen Serr
Rhipsalidopsis gaertneri (Regel) Moran · Easter Cactus
L.C. THOMAS BOTANICALS
Trifolium pratense L. · Red clover
Malopolska Hodowla Roslin Spolka z o.o.
Beta vulgaris Sugar Beet Group · Sugar beet
Danisco Seed
Matricaria recutita L. · German chamomile
Instytut Włókien Naturalnych i Roślin Zielarskich Państwowy Instytut Badawczy