Tetraploid IRG has four chromosomes per cell as opposed to diploids which have two.



Similar to diploid IRG, the tetraploid version differs by having four chromosomes per cell. Simply put, this means that they are more palatable to livestock. Naturally higher in sugars, livestock prefer tetraploids if they have the choice. They are more quickly and completely broken down in the rumen due to the higher ratio of cell contents to cell wall . Also, improved palatability and intake can lead to better condition of livestock. Tetraploid Ryegrasses can also cope with about 10% more clover in the pasture, thus improving pasture quality and animal performance.