QTL Analysis of Mineral Content in Perennial Ryegrass (Lolium Perenne L.)

Presenter Information

N. O. I. Cogan, La Trobe University, AustraliaFollow
A. C. Vecchies, La Trobe University, AustraliaFollow
T. Yamada, National Agricultural Research Center for Hokkaido Region, JapanFollow
K. F. Smith, Hamilton Centre, AustraliaFollow
J. W. Forster, La Trobe University, Australia

Description

Variation in mineral content of grasses can be strongly influenced by genetic factors. Grass tetany (hypomagnesemia) of cattle and sheep is due to disturbances in serum magnesium levels. In Southern Australia, resultant levels of mortality in cattle vary between 0.5-1.5% of total stock numbers. Serum magnesium variation may be due to feed deficits, or dietary imbalances that interfere with magnesium metabolism. High levels of potassium appear to exert negative effects on the levels of magnesium in the blood. Italian ryegrass genotypes with high levels of magnesium can alleviate the incidence of grass tetany. The genetic control of mineral content, including magnesium, in perennial ryegrass has been investigated using molecular marker-based analysis.

Citation

Cogan, N. O. I.; Vecchies, A. C.; Yamada, T.; Smith, K. F.; and Forster, J. W., "QTL Analysis of Mineral Content in Perennial Ryegrass (Lolium Perenne L.)" (2023). IGC Proceedings (1993-2023). 4.
https://uknowledge.uky.edu/igc/20/satellitesymposium5/4