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.
Citrullus lanatus (Thunb.) Matsum. & Nakai · Watermelon
ISI SEMENTI SPA
Malus Mill. · Apple
Jaroslav Tupy Institute of Experimental Botany / Otto Louda Institute of Experimental Botany
Lolium multiflorum Lam. · Italian ryegrass
FORSCHUNGSANSTALT AGROSCOPE RECKENHOLZ
Beta vulgaris Sugar Beet Group · Sugar beet
KWS SAAT SE & CO.KGAA
Beta vulgaris Sugar Beet Group · Sugar beet
ZWAANESSE BV (NL)
Beta vulgaris Sugar Beet Group · Sugar beet
SES ITA
Lolium multiflorum Lam. ssp. italicum (A. Br.) Volkart · Italian ryegrass
Mommersteeg International BV (NL)
Lolium multiflorum Lam. var. westerwoldicum Wittm. · Westerwolds Ryegrass
RAGT 2N S.A.S
Citrullus lanatus (Thunb.) Matsum. & Nakai · Watermelon
HAZERA GENETICS
Beta vulgaris Sugar Beet Group · Sugar beet
Danisco semences SARL (FR)
Beta vulgaris Sugar Beet Group · Sugar beet
Maribo Seed (DK)
Lolium multiflorum Lam. · Italian ryegrass
ILVO PLANT(APPLIED GENETICS+BREEDING)
Lolium multiflorum Lam. · Italian ryegrass
ILVO PLANT(APPLIED GENETICS+BREEDING)
Lolium multiflorum Lam. ssp. italicum (A. Br.) Volkart · Italian ryegrass
ILVO-PLANT 39
Beta vulgaris Sugar Beet Group · Sugar beet
Strube D&S GMBH
Beta vulgaris Sugar Beet Group · Sugar beet
KUHN
Beta vulgaris Sugar Beet Group · Sugar beet
KWS SAAT SE & CO.KGAA
Beta vulgaris Sugar Beet Group · Sugar beet
AGRA SOCIETA DEL SEME SRL
Hordeum vulgare L. · Barley
SECOBRA RECHERCHES S.A.S
Beta vulgaris Sugar Beet Group · Sugar beet
Lion Seeds LTD (UK)
Lolium multiflorum Lam. · Italian ryegrass
DSV DEUTSCHE SAATVEREDELUNG
Lolium multiflorum Lam. ssp. italicum (A. Br.) Volkart · Italian ryegrass
ILVO-PLANT 39
Lolium multiflorum Lam. var. westerwoldicum Wittm. · Westerwolds Ryegrass
DR. LUTKE-ENTRUP / MICHELMANN GUNTER
Lolium multiflorum Lam. ssp. italicum (A. Br.) Volkart · Italian ryegrass
ILVO PLANT TOEGEPASTE GENETICA EN VEREDELING