Revisiting variation in leaf magnesium concentrations in forage grasses for improved animal health
Revisiting variation in leaf magnesium concentrations in forage grasses for improved animal health
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重新审视饲草叶镁浓度的变化以改善动物健康
DOI：
10.1007/s11104-020-04716-9
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发表时间：
2020
期刊：
影响因子：
4.9
通讯作者：
Penrose B
中科院分区：
文献类型：
--
作者：
Penrose B
多花黑麦草（Lolium multiflorumLam.）CV.在20世纪70年代，选择和培育增加叶片镁（Mg）浓度的Bb2067），减少了实验放牧下绵羊低镁血症的发病率。在这里，我们报告的证据档案实验表明，简历。Bb2067在多个位点的Mg浓度始终较高。我们还旨在量化现代多年生黑麦草（Lolium perenneL.）杂交黑麦草（Lolium perenne×multiflorum）和高羊茅（Festuca arundinaceaShreb.）MethodsData报道从未发表的20世纪80年代田间小区试验CV。Bb2067和同期参考品种，播种在两个英国的位置在1983年和1984年，从397品种的现代牧草在13个英国为基础的育种实验在2013年春天取样。在20世纪80年代的实验中，与参考品种相比，Bb2067的叶片镁浓度一直较高，钾（K）浓度较低，饲料手足抽搐指数（FTI）也较低。在20世纪80年代的实验中观察到叶镁和钾浓度和FTI的季节变化，与钾浓度一般是最大的和镁浓度最小的春天。在现代牧草中，叶镁浓度（高达6.3倍）和FTI（高达2.1倍）的变化很大，无论是在物种内和物种之间，这是独立的产量变化。在杂交黑麦草品种的一个子集，有证据表明，高镁性状已经存在于一些现代育种线，虽然以前unreported.ConclusionsThe叶镁浓度和FTI之间的变化老品种和新品种显示有相当大的潜力，以提高矿物质质量，以改善牲畜健康的饲料品种，可能不会影响产量或其他营养性状。
AimsAn Italian ryegrass cultivar (Lolium multiflorumLam. cv. Bb2067), selected and bred for increased leaf magnesium (Mg) concentration in the 1970s, reduced the incidence of hypomagnesaemia in sheep under experimental grazings. Here, we report evidence from archival experiments showing that cv. Bb2067 had consistently greater Mg concentrations at multiple sites. We also aimed to quantify variation in leaf Mg concentration among modern perennial ryegrass (Lolium perenneL.), hybrid ryegrass (Lolium perenne×multiflorum), and tall fescue (Festuca arundinaceaShreb.) cultivars.MethodsData are reported from unpublished 1980s field-plot experiments for cv. Bb2067 and contemporaneous reference cultivars, sown at two UK locations in 1983 and 1984, and from 397 cultivars of modern forage grass in 13 UK-based breeding experiments sampled in spring 2013.ResultsAcross sites, years and cuts, cv. Bb2067 had a consistently greater leaf Mg concentration and lower potassium (K) concentration and forage tetany index (FTI) than reference cultivars in the 1980s experiments. Seasonal variation in leaf Mg and K concentrations and FTI were observed in the 1980s experiments, with K concentrations being generally greatest and Mg concentrations smallest in spring. Among modern forage grasses, there was large variation in leaf Mg concentration (up to 6.3-fold) and FTI (up to 2.1-fold), both within and between species, which varied independently of yield. Among a subset of hybrid ryegrass cultivars, there is evidence that the high Mg trait is already present in some modern breeding lines, albeit previously unreported.ConclusionsThe variation in leaf Mg concentration and FTI among old and new cultivars shows there is considerable potential to breed forages with improved mineral quality to improve livestock health, potentially without compromising yield or other nutritional traits.
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Festuca arundinacea Schreb 矿物质浓度的遗传变异。
影响因子：
5.4
作者：
Henry T. Nguyen;D. Sleper
通讯作者：
D. Sleper
澳大利亚的土壤测试和植物分析
影响因子：
--
作者：
K. Peverill
通讯作者：
K. Peverill
高镁草品种控制放牧动物低镁血症的功效
影响因子：
2.4
作者：
G. Moseley;D. Baker
通讯作者：
D. Baker
放牧奶牛的草抽搐。
DOI：
10.18174/njas.v5i1.17745
发表时间：
1957
期刊：
Netherlands Journal of Agricultural Science
影响因子：
--
作者：
A. Kemp;M. Hart
通讯作者：
M. Hart
影响因子：
4.9
作者：
J. Schonewille
通讯作者：
J. Schonewille