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首页> 外文期刊>Cereal Chemistry >Wet-Milling Characteristics of 10 Lines from Germplasm Enhancement of Maize Project Compared with Five Corn Belt Lines.
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Wet-Milling Characteristics of 10 Lines from Germplasm Enhancement of Maize Project Compared with Five Corn Belt Lines.

机译：玉米项目种质增强10个系与5个玉米带系的湿磨特性。

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摘要

The use of corn (Zea mays L.) hybrids with high grain yield and starch extractability has steadily increased in the processing industry. In light of widespread corn seed industry participation in the Germplasm Enhancement of Maize Project (GEM), which seeks to enhance exotic germplasm, future hybrids may contain more exotic sources in genetic backgrounds. It is necessary to establish and monitor physical, compositional, and milling characteristics of the new exotic breeding materials to determine the processing value. The present study was conducted to determine the wet-milling characteristics of a set of GEM lines compared with typical Corn Belt lines. Ten GEM lines introgressed with exotic materials from Argentina, Chile, Cuba, Florida, and Uruguay and previously identified as having different starch yields, three commercial inbred lines, and two public inbred lines (B73 and Mo17) were analyzed using both near-infrared transmittance (NIT) and a 100-g wet-milling procedure. There were statistical differences (P < 0.05) in the yield of wet-milled fractions (starch, fiber, gluten, and germ). The GEM lines AR16035:S19-227-1-B and CUBA117:S1520-562-1-B had similar or better starch yield and starch recovery than B73 and the other adapted inbred lines, indicating that they may be useful in improving the proportion of extractable starch present in kernels of hybrids. Residual protein levels in the starch and gluten fractions were 0.26-0.32% and 38-45%, respectively. The starch yield of GEM lines from wet milling correlated positively with starch content from NIT and was negatively correlated with protein content of the corn kernels. Oil content in the germ varied from 50 to 60%. Our results indicate that incorporating GEM lines in a breeding program can maintain or even improve wet-milling characteristics of Corn Belt materials if lines with appropriate traits are used.
机译：在加工工业中，具有高谷物产量和淀粉可提取性的玉米（Zea mays L.）杂交种的使用稳步增长。鉴于玉米种子行业广泛参与了旨在提高外来种质的玉米种质改良项目（GEM），未来的杂交种可能在遗传背景中包含更多的外来来源。有必要建立和监视新的外来育种材料的物理，组成和研磨特性，以确定加工价值。进行本研究是为了确定一组GEM线与典型的Corn Belt线相比的湿磨特性。使用来自阿根廷，智利，古巴，佛罗里达和乌拉圭的异国材料渗入的10个GEM品系，先前被确定具有不同的淀粉产量，使用近红外透射率分析了3个商业近交系和2个公共近交系（B73和Mo17）。 （NIT）和100克湿磨程序。湿磨馏分（淀粉，纤维，面筋和胚芽）的产量存在统计学差异（P <0.05）。 GEM品系AR16035：S19-227-1-B和CUBA117：S1520-562-1-B与B73和其他适应性近交品系相比具有相似或更好的淀粉产量和淀粉回收率，表明它们可能有助于提高比例杂种仁中存在的可提取淀粉的含量。淀粉和面筋部分中的残留蛋白质水平分别为0.26-0.32％和38-45％。湿磨GEM系的淀粉产量与NIT的淀粉含量呈正相关，与玉米粒的蛋白质含量呈负相关。胚芽中的油含量从50％到60％不等。我们的结果表明，如果使用具有适当性状的品系，将GEM品系纳入育种程序可以维持甚至改善玉米带材料的湿磨特性。

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