Variety traits
Lolium multiflorum Lam. var. westerwoldicum Wittm.
A cytogenetic trait defined as the presence of diploid (2n=14) or tetraploid (2n=28) forms, which significantly affects the morphology, nutritional value, and growth intensity of the crop.
In the reference 95 varieties crop Westerwolds Ryegrass, where this is mentioned in the description.
For Westerwold ryegrass, two main cytotypes are distinguished: diploid with a set of 2n = 2x = 14 and tetraploid with a set of 2n = 4x = 28. To determine the ploidy level of modern varieties, flow cytometry is used, allowing for the measurement of DNA content in cells.
Tetraploid forms are characterized by larger cells, which results in increased size of vegetative organs and seed mass. The increase in cell volume facilitates the accumulation of higher levels of water-soluble carbohydrates while maintaining moderate cell wall thickness, which enhances palatability and intake of the forage by animals.
Tetraploids exhibit higher initial growth intensity and vigorous development, although they form a less dense sward compared to diploid varieties. The choice between these forms is based on agronomic objectives, where tetraploid varieties are preferred for producing high-quality forage mass.
General information about the subject — on the page Ploidy.
Selection based on the description text, not on official evaluation: these data are absent from registers. For specific variety details, please refer to its profile.
Lolium multiflorum Lam. var. westerwoldicum Wittm. · Westerwolds Ryegrass
Barenbrug Holland BV (NL)
Lolium multiflorum Lam. var. westerwoldicum Wittm. · Westerwolds Ryegrass
Semillas Fitó S.A.
Lolium multiflorum Lam. var. westerwoldicum Wittm. · Westerwolds Ryegrass
Deutsche Saatveredelung AG - DSV (DE)
Lolium multiflorum Lam. var. westerwoldicum Wittm. · Westerwolds Ryegrass
R 2n (FR)
Lolium multiflorum Lam. var. westerwoldicum Wittm. · Westerwolds Ryegrass
GIE GRASS (FR)
Lolium multiflorum Lam. var. westerwoldicum Wittm. · Westerwolds Ryegrass
Euro Grass B.V. (NL)
Lolium multiflorum Lam. var. westerwoldicum Wittm. · Westerwolds Ryegrass
Carneau Freres SA Eurogazon (FR)
Lolium multiflorum Lam. var. westerwoldicum Wittm. · Westerwolds Ryegrass
AgResearch (NZ)
Lolium multiflorum Lam. var. westerwoldicum Wittm. · Westerwolds Ryegrass
R 2n (FR)
Lolium multiflorum Lam. var. westerwoldicum Wittm. · Westerwolds Ryegrass
SAATZUCHT STEINACH GmbH & Co KG (DE)
Lolium multiflorum Lam. var. westerwoldicum Wittm. · Westerwolds Ryegrass
Malopolska Hodowla Roslin Spolka z o.o.
Lolium multiflorum Lam. var. westerwoldicum Wittm. · Westerwolds Ryegrass
ILVO-PLANT 39
Lolium multiflorum Lam. var. westerwoldicum Wittm. · Westerwolds Ryegrass
Lolium multiflorum Lam. var. westerwoldicum Wittm. · Westerwolds Ryegrass
Lolium multiflorum Lam. var. westerwoldicum Wittm. · Westerwolds Ryegrass
Lolium multiflorum Lam. var. westerwoldicum Wittm. · Westerwolds Ryegrass
Lolium multiflorum Lam. var. westerwoldicum Wittm. · Westerwolds Ryegrass
Lolium multiflorum Lam. var. westerwoldicum Wittm. · Westerwolds Ryegrass
Lolium multiflorum Lam. var. westerwoldicum Wittm. · Westerwolds Ryegrass
Lolium multiflorum Lam. var. westerwoldicum Wittm. · Westerwolds Ryegrass
Lolium multiflorum Lam. var. westerwoldicum Wittm. · Westerwolds Ryegrass
Lolium multiflorum Lam. var. westerwoldicum Wittm. · Westerwolds Ryegrass
Lolium multiflorum Lam. var. westerwoldicum Wittm. · Westerwolds Ryegrass
Lolium multiflorum Lam. var. westerwoldicum Wittm. · Westerwolds Ryegrass
GIE GRASS (FR)