scholarly journals A Study of Phospholipids and Galactolipids in Pollen of Two Lines of Brassica napus L. (Rapeseed) with Different Ratios of Linoleic to Linolenic Acid

1990 ◽  
Vol 93 (2) ◽  
pp. 418-424 ◽  
Author(s):  
D. Evan Evans ◽  
Joseph P. Sang ◽  
Xenophon Cominos ◽  
Neil E. Rothnie ◽  
R. Bruce Knox
Keyword(s):  
Brassica Napus ◽  
Linolenic Acid ◽  
Brassica Napus L

Association of a RAPD marker with linolenic acid concentration in the seed oil of rapeseed (Brassica napus L.)

Genome ◽  
1995 ◽  
Vol 38 (2) ◽  
pp. 414-416 ◽  
Author(s):  
P. K. Tanhuanpää ◽  
J. P. Vilkki ◽  
H. J. Vilkki
Keyword(s):  
Brassica Napus ◽  
Linolenic Acid ◽  
Acid Concentration ◽  
Seed Oil ◽  
Rapd Marker ◽  
Brassica Napus L ◽  
Breeding Programs ◽  
Selection For ◽  
Rflp Rapd ◽  
Low Linolenic

The F2 progeny (64 individuals) from the cross between oilseed rape (Brassica napus L.) cultivar Topas and R4 (a low linolenic mutation line) was analyzed with 8 RFLPs and 34 RAPDs to discover a genetic tag for gene(s) affecting linolenic acid concentration. According to variance analysis (ANOVA), one RAPD marker (25a) was significantly associated with linolenic acid content; the linolenic acid concentration in the seeds of F2 individuals showing the marker (includes both homo- and hetero-zygotes) was 7.43 ± 1.35% and in those lacking the marker was 5.70 ± 1.52%. Marker 25a may be used to facilitate selection for fatty acid composition in future breeding programs of oilseed rape.Key words: Brassica napus, RFLP, RAPD, linolenic acid.

INHERITANCE OF OLEIC, LINOLEIC AND LINOLENIC ACIDS IN SEED OIL OF RAPESEED (BRASSICA NAPUS)

1975 ◽  
Vol 55 (1) ◽  
pp. 205-210 ◽  
Author(s):  
Z. P. KONDRA ◽  
P. M. THOMAS
Keyword(s):  
Linoleic Acid ◽  
Brassica Napus ◽  
Linolenic Acid ◽  
Acid Content ◽  
Genetic System ◽  
Linoleic Acid Content ◽  
Brassica Napus L ◽  
Partial Dominance ◽  
Effective Factors ◽  
Heritability Estimates

The fatty acid composition of rapeseed (Brassica napus L.) oil was investigated in parental, F1 and F2 plant populations of three crosses among three low erucic acid lines differing in oleic, linoleic and linolenic acid content. The F1 plant population values indicated that the oleic and linoleic acid contents were controlled by a simple additive gene system in one cross. In the other two crosses, partial dominance for high oleic and low linoleic content was observed. Dominance of low linolenic acid values was observed. The heritability estimates for oleic and linoleic acid were similar within each cross. The heritability estimates ranged from 53 to 78% for oleic, 40 to 84% for linoleic and 26 to 59% for linolenic. The estimates of minimum number of effective factors controlling oleic, and linoleic were similar within each cross. The number of effective factors ranged from 2 to 6 for oleic, 3 to 5 for linoleic, 0 to 4 for linolenic. The similarity of genetic behavior of oleic and linoleic acid content within each cross and the very high negative correlation between these components suggests that the relative ratios of oleic and linoleic acid content may be under the control of one genetic system.

scholarly journals Combining Ability Analysis and Genetic-Effects Studies for Some Important Quality Characters in Brassica napus L.

2015 ◽  
Vol 3 (10) ◽  
pp. 790 ◽  
Author(s):  
Aamar Shehzad ◽  
Hafeez Ahmad Sadaqat ◽  
Mohsin Ali ◽  
Muhammad Furqan Ashraf
Keyword(s):  
Oleic Acid ◽  
Brassica Napus ◽  
Erucic Acid ◽  
Linolenic Acid ◽  
Combining Ability ◽  
Block Design ◽  
Genetic Effects ◽  
Sum Of Squares ◽  
Brassica Napus L ◽  
Combining Ability Analysis

Combining ability analysis has an important position in rapeseed breeding. To evaluate genetic and combining ability effects, three Brassica napus L. testers “Punjab Sarson, Legend and Durre-NIFA” and five lines “Duncled, K-258, ZN-R-1, ZN-R-8, ZN-M-6” were crossed using line × tester design in Randomized Complete Block Design (RCBD) with three replications. Mean sum of squares of the analysis of variances (ANOVA) for genotypes was highly significant for all of the traits. Most of the lines and testers exhibited significant results of mean sum of squares for combining ability. Line ‘Duncled’ was proved good general combiner for oil (8.8), protein (3.7), erucic acid (33.0), oleic acid (13.0) and glucosinolate (-19.3) over other lines and tester ‘Durree-NIFA’ for protein (6.6), erucic acid (-23.4), and linolenic acid (-5.3) over other testers. Significant specific combining ability effects were also observed. The best hybrid combinations were Legend × ZN-R-1 for oil (9.6), Punjab Sarson × Duncled for minimum erucic acid (-14.0) and linolenic acid contents (-6.0), and Legend × ZN-M-6 for maximum protein (8.2) and minimum glucosinolate contents (-11.1). The maximum oil contents were observed in ‘Legend × ZN-R-1’ (52.4%). The cross ‘Punjab Sarson × Duncled’ expressed maximum values of protein (26.5%) and oleic acid (62.5%) while minimum for erucic acid (2.3%), linolenic acid (5.4%) and glucosinolate contents (19.3µmol/g). This research discloses the significance of non-additive genetic effects for most of the studied traits except oil contents. These studies will also help to improve nutritional values of rapeseed crop by selecting noble crosses.

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