VARIATION IN THE MAGNESIUM CONCENTRATION OF RYEGRASS PLANTS
VARIATION IN THE MAGNESIUM CONCENTRATION OF RYEGRASS PLANTS
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DOI：
10.1080/00288233.1983.10427040
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发表时间：
1983-01-01
影响因子：
1.8
通讯作者：
CRUSH, JR
中科院分区：
文献类型：
--
作者：
CRUSH, JR
415种多年生黑麦草[Lolium perenne，L. multiflorum，L. . times.本研究以不同交换性镁含量的牧草为研究对象，对160个牧草基因型和8个商品牧草品种的镁含量进行了分析。没有证据表明镁浓度的生态或品种差异，但有很大的变化在所有人群。镁含量高达干物质的0.552%，当对多年生黑麦草的高镁选择作进一步试验时，得到了牧草镁含量的遗传控制指标。在该选择范围内，Mg与K、Ca、Fe、Cu、Mn、Zn含量呈显著正相关，与Na呈显著负相关。有选择高镁黑麦草的余地，但钠含量必须监测。
Four-hundred and fifteen ryegrass [Lolium perenne, L. multiflorum, L. .times. hybridum] genotypes, collected from pastures on soils of different exchangeable Mg concentration, together with 160 genotypes from 8 commercial cultivars were examined for variation in herbage Mg concentration. There was no evidence for ecotypic or cultivar differences in Mg concentration, but there was substantial variation within all populations. Mg concentrations up to 0.552% of DM [dry matter] were found. When a high Mg selection of perennial ryegrass was tested further, indications of genetic control of herbage Mg concentrations were obtained. Within this selection there were positive correlations between concentrations of Mg and K, Ca, Fe, Cu, Mn and Zn, but a significant negative correlation with Na. There is scope for selection of high-Mg ryegrass, but Na content would have to be monitored.