Breeding for lipid composition in corn
Breeding for lipid composition in corn
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玉米脂质成分育种
DOI：
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发表时间：
1975
期刊：
影响因子：
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通讯作者：
D. E. Alexander
中科院分区：
文献类型：
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作者：
E. Weber;D. E. Alexander
玉米(Zea Mays L.)用于改变其脂类成分。大量选择产生了从0.4-17%的含油量范围内的菌株，高含油量的版本仍然存在遗传变异。高油杂交种(7%-8%油)的产量与商业杂交种(4%油)的产量相当，最近已经开发出来。在明尼苏达大学的饲养试验中，猪在高油玉米上获得了更高的收益。油酸和亚油酸通常占玉米油脂肪酸的80%-90%。对玉米品系的筛选表明，亚油酸的含量范围为25-71%，油酸的含量范围为20-60%。虽然脂肪合成的遗传学尚未完全阐明，但选育不饱和玉米应该是可能的。在玉米中，甘油三酯分子中的脂肪酸位置也可能受到基因改造的影响。
Large genetic diversity is available in corn (Zea mays L.) for alteration of its lipid composition. Mass selection has produced strains ranging from 0.4–17% oil with genetic variability still existing in the high oil version. High oil hybrids (7–8% oil) with yields equal to those of commercial hybrids (4% oil) have recently been developed. In feeding trials at the University of Minnesota, pigs made more efficient gains on high oil corn. Oleic and linoleic acids usually make up 80–90% of the fatty acids of corn oil. Screening of corn lines has revealed a range for linoleic acid of 25–71% and for oleic acid of 20–60%. Although the genetics of fattya cid synthesis have not been completely elucidated, breeding of corn with selected unsaturation should be possible. Fatty acid placement within the triglyceride molecule also may be subject to genetic modification in corn.