Agronomic performance of recombinant inbred line populations segregating for isoflavone content in soybean seeds

Soybean [Glycine max (L.) Merrill] seeds contain isoflavones, which have been associated with positive health effects in human adults but a negative effect on infants. Increasing or decreasing isoflavone content in the seed would be desirable; however, it is not known what impact this would have on...

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Veröffentlicht in:Crop science 2005-11, Vol.45 (6), p.2203-2211
Hauptverfasser: Primomo, V.S, Poysa, V, Ablett, G.R, Jackson, C.J, Rajcan, I
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container_issue 6
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creator Primomo, V.S
Poysa, V
Ablett, G.R
Jackson, C.J
Rajcan, I
description Soybean [Glycine max (L.) Merrill] seeds contain isoflavones, which have been associated with positive health effects in human adults but a negative effect on infants. Increasing or decreasing isoflavone content in the seed would be desirable; however, it is not known what impact this would have on agronomic and other seed quality traits. The main objective of this study was to determine if isoflavone content in soybean seeds was associated with changes in agronomic and seed quality traits. Recombinant inbred lines (RILs) with "high" (n = 35), "intermediate" (n = 35), and "low" (n = 35) isoflavone content, were selected from three F(4:5) populations grown in 2000 and planted at three locations in southern Ontario in 2002. There were significant differences among populations, environments, and their interaction for isoflavone content. "High" and "low" phenotypic classes were significantly different for maturity in all three populations. Despite a positive correlation between yield and isoflavones, several RILs with decreased isoflavone content (970 microgram g(-1)) were identified with yields (4222 kg ha(-1)) comparable to high-yielding cultivars. Isoflavone content had minimal effects on oil content, seed quality, and weight. Population 1 showed a significant negative association between isoflavone and protein content, whereas Pop. 2 and Pop. 3 did not. RILs were identified with high isoflavone and protein content ranging from 1746 to 1851 microgram g(-1) and 431 to 442 g kg(-1), respectively. It was possible to develop soybean with desirable isoflavone content in the seed and superior agronomic and seed quality traits.
doi_str_mv 10.2135/cropsci2004.0610
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Despite a positive correlation between yield and isoflavones, several RILs with decreased isoflavone content (970 microgram g(-1)) were identified with yields (4222 kg ha(-1)) comparable to high-yielding cultivars. Isoflavone content had minimal effects on oil content, seed quality, and weight. Population 1 showed a significant negative association between isoflavone and protein content, whereas Pop. 2 and Pop. 3 did not. RILs were identified with high isoflavone and protein content ranging from 1746 to 1851 microgram g(-1) and 431 to 442 g kg(-1), respectively. 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Merrill] seeds contain isoflavones, which have been associated with positive health effects in human adults but a negative effect on infants. Increasing or decreasing isoflavone content in the seed would be desirable; however, it is not known what impact this would have on agronomic and other seed quality traits. The main objective of this study was to determine if isoflavone content in soybean seeds was associated with changes in agronomic and seed quality traits. Recombinant inbred lines (RILs) with "high" (n = 35), "intermediate" (n = 35), and "low" (n = 35) isoflavone content, were selected from three F(4:5) populations grown in 2000 and planted at three locations in southern Ontario in 2002. There were significant differences among populations, environments, and their interaction for isoflavone content. "High" and "low" phenotypic classes were significantly different for maturity in all three populations. 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Merrill] seeds contain isoflavones, which have been associated with positive health effects in human adults but a negative effect on infants. Increasing or decreasing isoflavone content in the seed would be desirable; however, it is not known what impact this would have on agronomic and other seed quality traits. The main objective of this study was to determine if isoflavone content in soybean seeds was associated with changes in agronomic and seed quality traits. Recombinant inbred lines (RILs) with "high" (n = 35), "intermediate" (n = 35), and "low" (n = 35) isoflavone content, were selected from three F(4:5) populations grown in 2000 and planted at three locations in southern Ontario in 2002. There were significant differences among populations, environments, and their interaction for isoflavone content. "High" and "low" phenotypic classes were significantly different for maturity in all three populations. Despite a positive correlation between yield and isoflavones, several RILs with decreased isoflavone content (970 microgram g(-1)) were identified with yields (4222 kg ha(-1)) comparable to high-yielding cultivars. Isoflavone content had minimal effects on oil content, seed quality, and weight. Population 1 showed a significant negative association between isoflavone and protein content, whereas Pop. 2 and Pop. 3 did not. RILs were identified with high isoflavone and protein content ranging from 1746 to 1851 microgram g(-1) and 431 to 442 g kg(-1), respectively. It was possible to develop soybean with desirable isoflavone content in the seed and superior agronomic and seed quality traits.</abstract><cop>Madison, WI</cop><pub>The Crop Science Society of America, Inc</pub><doi>10.2135/cropsci2004.0610</doi><tpages>9</tpages></addata></record>
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subjects agronomic traits
Agronomy. Soil science and plant productions
Biological and medical sciences
chemical composition
crop quality
Crop science
crop yield
Cultivars
field crops
Fundamental and applied biological sciences. Psychology
gene segregation
Genes
Genetics and breeding of economic plants
Glycine max
inbred lines
Inbreeding
Isoflavones
lipid content
Nutritional aspects
phenotype
Plant populations
protein content
Soybean
Soybeans
Varietal selection. Specialized plant breeding, plant breeding aims
Yield, quality, earliness, varia
title Agronomic performance of recombinant inbred line populations segregating for isoflavone content in soybean seeds
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