Seed and agronomic QTL in low linolenic acid, lipoxygenase-free soybean (Glycine max (L.) Merrill) germplasm

Genome ◽  
2006 ◽  
Vol 49 (12) ◽  
pp. 1510-1527 ◽  
Author(s):  
Yarmilla Reinprecht ◽  
Vaino W. Poysa ◽  
Kangfu Yu ◽  
Istvan Rajcan ◽  
Gary R. Ablett ◽  
...  
Keyword(s):  
Linolenic Acid ◽  
Acid Content ◽  
Agronomic Traits ◽  
Random Amplified Polymorphic Dna ◽  
Recombinant Inbred Lines ◽  
Seed Mass ◽  
Linolenic Acid Content ◽  
Sequence Tagged Sites ◽  
Low Linolenic Acid ◽  
Low Linolenic

Linolenic acid and seed lipoxygenases are associated with off flavours in soybean products. F5 recombinant inbred lines (RILs) from a cross between a low linolenic acid line (RG10) and a seed lipoxygenase-free line (OX948) were genotyped for simple sequence repeats (SSR), random amplified polymorphic DNA (RAPD), sequence-tagged sites (STS), and cleaved amplified polymorphic sequence (CAPS) markers and evaluated for seed and agronomic traits at 3 Ontario locations in 2 years. One hundred twenty markers covering 1247.5 cM were mapped to 18 linkage groups (LGs) in the soybean composite genetic map. Seed lipoxygenases L-1 and L-2 mapped as single major genes to the same location on LG G13-F. L-3 mapped to LG G11-E. This is the first report of a map position for L-3. A major quantitative trait locus (QTL) associated with reduced linolenic acid content was identified on LG G3-B2. QTLs for 12 additional seed and agronomic traits were detected. Linolenic acid content, linoleic acid content, yield, seed mass, protein content, and plant height QTL were present in at least 4 of 6 environments. Three to 8 QTLs per trait were detected that accounted for up to 78% of total variation. Linolenic acid and lipoxygenase loci did not overlap yield QTL, suggesting that it should be possible to develop high-yielding lines resistant to oxidative degradation by marker-assisted selection (MAS).

scholarly journals Inheritance of Low Linolenic Acid Content in Soybean Mutant Line M-5.

1994 ◽  
Vol 44 (4) ◽  
pp. 379-382
Author(s):  
Shaikh Mizanur Rahman ◽  
Yutaka Takagi ◽  
Kei Miyamoto ◽  
Tetsuya Kawakita
Keyword(s):  
Linolenic Acid ◽  
Acid Content ◽  
Mutant Line ◽  
Linolenic Acid Content ◽  
Low Linolenic Acid ◽  
Low Linolenic

Interactions between stem termination type and linolenic acid content in soybean

1991 ◽  
Vol 71 (3) ◽  
pp. 649-653
Author(s):  
B. D. Rennie ◽  
J. W. Tanner
Keyword(s):  
Glycine Max ◽  
Linolenic Acid ◽  
Acid Content ◽  
Linolenic Acid Content ◽  
Glycine Max L ◽  
Low Linolenic Acid ◽  
The Mean ◽  
Short Season ◽  
Soybean Plants ◽  
Low Linolenic

Three determinate (dt1/dt1) soybean (Glycine max (L.) Merr.) lines: Hoyt, HC 80-1742 and HC 80-1756, with a "standard" linolenic acid content (Fan/Fan) were crossed to the indeterminate (dt1/dt1), "low" linolenic acid (fan/fan) line G-LLA-F3. The F2 plants descended from these crosses were grown in the field at Harrow in 1988 and the F2:3 plants were grown at Harrow and Ridgetown, Ontario in 1989. In the F2 progeny, the mean linolenic acid content of the determinate plants was not different from the mean of the indeterminate plants for the "standard" class (8.5 and 8.6%) or for the "low" class (4.1 and 4.2%). In the F2:3 progeny, for the "standard" class, the determinate plants (9.4%) had a significantly (P < 0.05) higher mean linolenic acid content than the indeterminate plants (9.1%). For the "low" class, the mean linolenic acid content of the determinate plants (4.9%) was significantly (P < 0.05) lower than the mean of the indeterminate plants (5.2%) at Ridgetown, but was not different (4.7 and 4.7%) at Harrow. The differences in linolenic acid content between stem types were less than the differences between lines or between locations. Overall, there was no pattern associated with stem termination type and linolenic acid content for soybean plants grown in short season areas. Key words: Soybean, Glycine max (L.) Merr., determinate, indeterminate, linolenic acid

Marker-Assisted Selection for Low Linolenic Acid Content in Soybean

2008 ◽  
Vol 21 (2) ◽  
pp. 139-155 ◽  
Author(s):  
Marie-Laure A. Sauer ◽  
Roy A. Scott ◽  
Thomas M. Cheesbrough
Keyword(s):  
Linolenic Acid ◽  
Acid Content ◽  
Marker Assisted Selection ◽  
Linolenic Acid Content ◽  
Low Linolenic Acid ◽  
Selection For ◽  
Low Linolenic

Inheritance of Low Linolenic Acid Content in Zero-Erucic Acid Ethiopian Mustard

Crop Science ◽  
2009 ◽  
Vol 49 (2) ◽  
pp. 549-553
Author(s):  
Abdelghani Nabloussi ◽  
José M. Fernández-Martínez ◽  
Leonardo Velasco
Keyword(s):  
Erucic Acid ◽  
Linolenic Acid ◽  
Acid Content ◽  
Linolenic Acid Content ◽  
Ethiopian Mustard ◽  
Low Linolenic Acid ◽  
Low Linolenic

Agronomic performance of soybean with seed lipoxygenase nulls and low linolenic acid content

2006 ◽  
Vol 86 (2) ◽  
pp. 379-387 ◽  
Author(s):  
Yarmilla Reinprecht, Vaino W. Poysa ◽  
Istvan Rajcan, Gary R. Ablett ◽  
K. Peter Pauls
Keyword(s):  
Linolenic Acid ◽  
Seed Weight ◽  
Agronomic Traits ◽  
Oxidative Degradation ◽  
Agronomic Performance ◽  
Glycine Max L ◽  
Yield Difference ◽  
Low Linolenic Acid ◽  
Parental Lines ◽  
Low Linolenic

Oxidation of linolenic acid (LA) is catalyzed by lipoxygenase (LX) and is associated with off-flavours of soybean [Glycine max (L.) Merrill] products. Low LA (LLA, <50 g kg-1 LA) and LX triple null (3lx) soybean lines have been developed to improve the oxidative stability of soybean oil and reduce off-flavours. The objective of this study was to evaluate the agronomic performance of recombinant inbred line (RIL) soybean population derived from the reciprocal crosses between a LLA line, RG10, and a 3lx line, OX948 and low LA, LX triple null (LLA.3lx) lines selected from these populations. Evaluation of RIL populations for seed and agronomic characteristics at three Ontario locations (Harrow, Ridgetown and Woodslee) in 2000 and 2001 indicated that reduction of LA and removal of seed LX did not cause any obvious detrimental effects agronomic traits including yield. Several RILs that combine LLA content (<30 g kg-1) with 3lx were obtained from these crosses and evaluated for a number of seed and agronomic traits at four Ontario locations (Harrow, Ridgetown, Woodslee and Woodstock) in 2001. The LLA.3lx lines had higher than average seed weight and protein content, but were 21 to 31% lower yielding than typical cultivars for these regions. Compared with parental lines, the LLA.3lx lines were 5 to 18% lower yielding. However, comparisons of LLA.3lx lines with lines combining high linolenic acid and all three seed lipoxygenases (HLA.3LX) indicated no yield difference between the two groups of lines in these populations. The results suggest that it should be possible to use this novel germplasm to develop competitive soybean cultivars that are resistant to oxidative degradation. Key words: Soybean, lipoxygenase null, low linolenic acid, performance

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