玉米低植酸突变体的营养品质分析  

ANALYSIS OF NUTRITIONAL QUALITY OF LOW PHYTIC ACID MUTANTS IN MAIZE

作　　者：袁名安[1] 罗红兵[1] 王忠华[2] 陈进红[3] 梅淑芳[3] 舒小丽[3] 吴殿星[3] 

机构地区：[1]湖南农业大学农学院,湖南长沙410028 [2]浙江万里学院生物技术研究所,浙江宁波315100 [3]浙江大学核农所IAEA合作中心、农业部核农学重点实验室,浙江杭州310029

出　　处：《核农学报》2008年第1期55-59,48,共6页Journal of Nuclear Agricultural Sciences

基　　金：浙江省自然科学基金(Y305168);科技计划项目(2004C32018);宁波市重点博士基金(2004A610013)

摘　　要：对比研究了8个玉米低植酸(Low phytic acid,lpa)突变体及其相应野生型(Wild Type,WT)的主要营养品质及其营养组分,结果显示:与野生型相比,各突变体总磷含量基本不变,无机磷含量均成倍增加,总淀粉含量显著下降,直链淀粉和粗脂肪含量变化不显著,粗蛋白含量在部分突变体中显著上升;多数氨基酸含量在突变体中有所提高,赖氨酸含量除Q319-lpa和X178-lpa下降外均不同程度上升;铁、锰、铜、锌、硒等微量元素含量变化不显著。研究表明lpa突变对玉米营养品质的改良和生物学效价的提高具有有益的作用。Major nutritional quality and components of eight low phytic acid （lpa） mutants and their corresponding wild types were studied. Compared to their corresponding wild types, the content of inorganic P （Pi） was all increased several times, while the content of total P （TP） in mutants was almost the same as their wild types. The contents of crude lipid and amylose were similar, but total starch was significantly different. Crude protein in some of mutants was increased significantly. Most of amino acids were increased, and essential amino acid-Lysine was increased except mutants derived from Q319 and X178. Mineral macronutrients and micronutrients were similar. All results showed that the lpa mutation in maize could enhance the nutritional quality and bioactivities.

关 键 词：玉米 低植酸 营养品质 氨基酸 微量元素 突变体 

分 类 号：S513[农业科学—作物学]