提高温带捷克玉米(Zea mays L.)种质纤维消化率的育种潜力

IF 16.4 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY
M. Schönleben, J. Mentschel, L. Střelec
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引用次数: 2

摘要

细胞壁消化率是现代青贮玉米品种的一个重要品质性状。微生物和反刍动物之间的共生关系使不适合人类食用的瘤胃可消化纤维或细胞壁成分能够有效地循环转化为高营养的牛奶和肉类。在进入捷克国家植物品种名录之前,对新的青贮玉米种质进行了广泛的细胞壁消化率参数测试。最近发表的不可消化中性洗涤剂纤维(uNDF)细胞壁消化率方法有望具有更大的实际意义。因此,我们研究的目的是使用大量捷克官方植物品种试验评估和2018年种植季节的捷克青贮饲料分析,与当前标准程序相比,评估uNDF方法的潜力。与目前的标准方法相比,uNDF方法产生了两倍高的表型标准差。这对植物育种家、官方品种测试机构和农场专业人员来说都是个好消息,他们认为品种改良更快,品种选择更简单。另一方面,由于分化潜力低,我们在选择可消化的青贮玉米品种时不鼓励使用绝对木质素含量。由于在消化率特征酶溶性有机物(ELOS)和纤维素酶消化率(DCS)之间,观察到接近1的Pearson相关性,用uNDF方法替代其中一种分析,可以以高度经济的方式提供有价值的额外信息。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Potentials to breed for improved fibre digestibility in temperate Czech maize (Zea mays L.) germplasm
Cell wall digestibility is an important quality trait of modern silage maize cultivars. The symbiotic relationship between microbes and ruminant livestock enables the efficient upcycling of otherwise for human consumption unsuitable rumen digestible fibre or cell wall components into highly nutritious milk and meat. Before entering the Czech National List of Plant Varieties, new silage maize germplasm is extensively tested for different cell wall digestibility parameters. Recently published, the undigestible neutral detergent fibre (uNDF) cell wall digestibility approach promises even greater practical relevance. The aim of our study was, therefore, to assess the potential of the uNDF method, compared with current standard procedures, using a vast set of official Czech plant variety trial evaluations and Czech silage analyses from the 2018 cropping season. The uNDF method yielded a twice as high phenotypic standard deviation, compared with the current standard approaches. This is good news for plant breeders, official variety testing organisations, and farm professionals alike, enabeling faster variety improvement and simpler variety selection. On the other hand, due to the low differentiation potential, we discourage the use of the absolute lignin content when selecting for digestible silage maize varieties. Since between the digestibility traits enzymatic soluble organic substance (ELOS) and cellulase digestibility (DCS), a Pearson correlation close to one was observed, the substitution of one of these analytics by the uNDF method, may render valuable additional information in a highly economical manner.
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来源期刊
Accounts of Chemical Research
Accounts of Chemical Research 化学-化学综合
CiteScore
31.40
自引率
1.10%
发文量
312
审稿时长
2 months
期刊介绍: Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.
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