INHERITANCE OF FATTY-ACID COMPOSITION IN A SOYBEAN MUTANT WITH LOW LINOLENIC ACID
INHERITANCE OF FATTY-ACID COMPOSITION IN A SOYBEAN MUTANT WITH LOW LINOLENIC ACID
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DOI：
10.2135/cropsci1988.0011183x002800010013x
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发表时间：
1988-01-01
期刊：
影响因子：
2.3
通讯作者：
CIANZIO, SR
中科院分区：
文献类型：
--
作者：
GRAEF, GL;FEHR, WR;CIANZIO, SR
亚麻酸是大豆（Glycine max L.）梅尔。]造成不良气味和味道的油通常与劣质油有关。本研究的目的是确定脂肪酸组成的遗传在A5，大豆突变体与最低的亚麻酸百分比的任何基因型，已被评估的字符。A5与两个大豆品种Weber和Pella进行了正反交。除了A5和Pella中的棕榈酸外，所有脂肪酸的父母都有显着差异。评价F1种子、来自F1植物的F2种子和来自F2衍生系的重复测试的种子的棕榈酸、硬脂酸、油酸、亚油酸和亚麻酸的百分比。从正反交的F1种子不同显着的油酸，亚油酸，亚麻酸在两个十字架，棕榈酸在韦伯交叉，这表明这些脂肪酸的组成的母体效应。 没有观察到脂肪酸组成的细胞质遗传，基于F1植物的F1种子分析中脂肪酸组成缺乏互交差异。F2衍生系的组合物表现出连续分布，这是两个杂交中每种脂肪酸的典型数量特征。在Pella杂交中有14%的F2衍生系和在Weber杂交中有10%的F2衍生系具有低至A5的亚麻酸百分比。遗传力估计值的地块的基础上，平均从分析的F2衍生线为33%的棕榈酸，5%的硬脂酸，54%的油酸，595的亚油酸，和58%的亚麻酸。结果表明，在以A5为亲本的杂交组合中，脂肪酸组成应被视为一个数量性状。
Linolenic acid is the unstable component of soybean [Glycine max L.) Merr.] oil responsible for undesirable odors and flavors commonly associated with poor oil quality. The objective of this study was to determine the inheritance of fatty acid composition in A5, a soybean mutant with the lowest linolenic acid percentage of any genotype that has been evaluated for the character. Reciprocal crosses were made between A5 and two soybean cultivars, Weber and Pella. The parents were significantly different for all fatty acids, except palmitic acid in A5 and Pella. The F1 seeds, F2 seeds from F1 plants, and seeds from replicated tests of F2-derived lines were evaluated for the percentage of palmitic, stearic, oleic, linoleic, and linolenic acids. The F1 seeds from reciprocal crosses differed significant for oleic, linoleic, and linolenic acids in both crosses, and for palmitic acid in the Weber cross, which indicated a maternal effect on composition for these fatty acids. Cytoplasmic inheritance of fatty acid composition was not observed, based on the lack of reciprocal cross differences for fatty acid composition in the analysis of F1 seeds from F1 plants. The composition of the F2-derived lines exhibited a continuous distribution typical of a quantitative character for each of the fatty acids in both crosses. There were 14% of the F2-derived lines in the Pella cross and 10% in the Weber cross that had a linolenic acid percentage as low as A5. Heritability estimates on a plot basis averaged across from the analysis of F2-derived lines were 33% for palmitic, 5% for stearic, 54% for oleic, 595 for linoleic, and 58% for linolenic acid. The results indicated that fatty acid composition should be considered a quantitative character in crosses that involve A5 as a parent.