Genetic diversity for agronomic, morphological and seed quality traits in Sinapis alba L. (yellow mustard)

2006 ◽  
Vol 86 (4) ◽  
pp. 1015-1025 ◽  
Author(s):  
F. Katepa-Mupondwa ◽  
R. K. Gugel ◽  
J. P. Raney
Keyword(s):  
Genetic Diversity ◽  
Fatty Acids ◽  
Principal Component Analysis ◽  
Seed Weight ◽  
Seed Quality ◽  
Principal Component ◽  
Sinapis Alba ◽  
Quality Traits ◽  
Yellow Mustard ◽  
Seed Quality Traits

The objective of this research was to study the amount and pattern of phenotypic diversity among 179 Sinapis alba accessions maintained in germplasm collections at Plant Gene Resources of Canada (PGRC) and the Saskatoon Research Centre of Agriculture and Agri-Food Canada (SRC-AAFC). Accessions were evaluated in five field trials at Saskatoon from 1994 to 1998. Observations were recorded on number of days to flower and to mature, plant height, 1000-seed weight, oil and protein content and selected fatty acids and glucosinolates. Analysis of variance and mean comparisons were used to characterize variation in the germplasm. There was significant variation among accessions for all traits except some minor fatty acids and glucosinolates. Principal component analysis indicated that five or six principal components provided a good summary of the data, accounting for 75–80% of the variation. In all trials, the first principal component axis separated accessions predominantly on the basis of erucic acid (C22:1) and oleic acid (C18:1), with associated C22 and C18 fatty acids. The relative importance of agronomic, morphological and other seed quality traits varied among the trials, but they were always less important than C22:1 and C18:1. Cluster analysis generated 10–13 groups of accessions in each trial except in 1997 (five clusters). Distinct clusters were identified that possessed high or low values for C22:1, C18:1, oil and protein content, maturity, plant height and seed weight. Seed colour was not used as a classification variable; however, brown-seeded accessions were grouped into one distinct cluster due to a significantly higher level of C22:1 in these accessions. This study demonstrates that the S. alba accessions maintained at PGRC and SRC-AAFC are a source of genetic diversity for breeding both condiment (high glucosinolate and C22:1 content) and vegetable (low glucosinolate and C22:1 content) oilseed yellow mustard and for conducting genetic studies. Key words: Sinapis alba, genetic diversity, cluster analysis, principal component analysis

scholarly journals Multivariate Analysis in Lentil (Lens culinaris L.)

1970 ◽  
Vol 23 (1) ◽  
pp. 9-12 ◽  
Author(s):  
AA Jewel ◽  
AK Chowdhury ◽  
AKMM Alam ◽  
MA Latif ◽  
MM Hassan
Keyword(s):  
Genetic Diversity ◽  
Principal Component Analysis ◽  
Cluster Analysis ◽  
Seed Weight ◽  
Lens Culinaris ◽  
Principal Component ◽  
Plot Yield ◽  
Days To Maturity ◽  
Cluster Distance ◽  
100 Seed Weight

Genetic divergence among 22 genotypes of lentil was estimated using D2 and principal component analysis. The genotypes under study fell into four clusters. The intra-cluster value was the maximum in cluster I and the minimum in cluster II. The inter-cluster distance was larger than the intra-cluster distance in all the cases suggesting the wider genetic diversity among the genotypes of different groups. The inter-cluster value indicated maximum distance between cluster I and II than cluster III and IV. Thus the genetically diverged genotypes of the clusters could be used as parent in hybridization program to get desirable genotypes. Cluster I had the highest mean for days to maturity, plant height, pods/plant and per plot yield while cluster II and III had the highest days to first flowering and 100 seed weight, respectively. Genotypes with these characters in respective groups would, therefore, offer a good scope of improvement of lentil through selection.   Key words: Lentil; cluster analysis; divergence; hybridization DOI: http://dx.doi.org/10.3329/bjpbg.v23i1.9312 BJPBG 2010; 23(1): 9-12

QTL mapping of seed-quality traits in sunflower recombinant inbred lines under different water regimes

Genome ◽  
2008 ◽  
Vol 51 (8) ◽  
pp. 599-615 ◽  
Author(s):  
A. Ebrahimi ◽  
P. Maury ◽  
M. Berger ◽  
S. Poormohammad Kiani ◽  
A. Nabipour ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Water Treatment ◽  
Recombinant Inbred ◽  
Oil Content ◽  
Seed Quality ◽  
Recombinant Inbred Lines ◽  
Principal Component ◽  
Inbred Lines ◽  
Quality Traits ◽  
Seed Quality Traits

The objectives of the present research were to determine the effects of water stress on seed-quality traits and to map QTLs controlling the studied traits under two different water treatments in a population of sunflower recombinant inbred lines (RILs). Two experiments were conducted in greenhouse and field conditions, each with well-watered and water-stressed treatments. The experiments consisted of a split-plot design (water treatment and RIL) with three blocks. Analyses of variance showed significant variation among genotypes, and a water treatment × genotype interaction was also observed for most of the traits. Two to 15 QTLs were found, depending on trait and growth conditions, and the percentage of phenotypic variance explained by the QTLs ranged from 5% to 31%. Several QTLs for oil content overlapped with QTLs for palmitic and stearic acid contents in all four conditions. An overlapping region on linkage group 3 (QTLs 2.OC.3.1 and 4.SA.3.1) was linked to an SSR marker (ORS657). A principal component analysis was performed on four fatty acid traits. Two principal components, P1 and P2, were used for QTL analysis. This method improved the ability to identify chromosomal regions affecting the fatty acids. We also detected the principal-component QTLs that did not overlap with the fatty acid QTLs. The results highlight genomic regions of interest in marker-based breeding programmes for increasing oil content in sunflower.

SSR markers and seed quality traits revealed genetic diversity in durum wheat (Triticum durum Desf.)

2021 ◽  
Author(s):  
Ines Jlassi ◽  
Fethi Bnejdi ◽  
Mourad Saadoun ◽  
Abdelhamid Hajji ◽  
Dhouha Mansouri ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Durum Wheat ◽  
Ssr Markers ◽  
Triticum Durum ◽  
Seed Quality ◽  
Quality Traits ◽  
Triticum Durum Desf ◽  
Seed Quality Traits

Within-plant variation for seed weight and seed quality traits in white lupin (Lupinus albus L.)

1998 ◽  
Vol 49 (1) ◽  
pp. 59 ◽  
Author(s):  
L. Velasco ◽  
L. M. Mart ◽  
De Haro
Keyword(s):  
Protein Content ◽  
Seed Weight ◽  
Seed Oil ◽  
Seed Quality ◽  
White Lupin ◽  
Quality Traits ◽  
Plant Variation ◽  
Branch Order ◽  
First Order ◽  
Seed Quality Traits

The influence of the branch order on seed weight and seed quality traits was studied in 32 bitter landraces of white lupin. Seeds from the mainstem, first-order branches, and second-order branches were harvested separately and the seed weight, protein content, oil content, and oil composition were determined at each branch order. The results showed the presence of within-plant variation for all of the traits included in this study. The seeds from the mainstem were heavier and had lower oil and protein content than the seeds from the branches. The seed oil from the mainstem was characterised by a higher percentage of saturated fatty acids and oleic acid, and a lower percentage of linoleic, linolenic, eicosenoic, and erucic acid than the seeds from the branches. The seeds from the first branch order were heavier and had lower oil and protein content than the seeds from the second-order. Seed oil from the 2 branch orders only differed for the percentage of palmitic acid, which was higher in the first-order. It is concluded that within-plant variation in white lupin should be taken into account to avoid sampling errors, because seeds from one branch order are imperfect as a predictor of the composition of seeds from the others.

Genetic Analysis of Chinese Cucumber Collections in the U.S. National Germplasm Collection

HortScience ◽  
1998 ◽  
Vol 33 (3) ◽  
pp. 534e-534 ◽  
Author(s):  
J. Staub ◽  
Felix Sequen ◽  
Tom Horejsi ◽  
Jin Feng Chen
Keyword(s):  
Genetic Diversity ◽  
Principal Component Analysis ◽  
Genetic Variation ◽  
Genetic Analysis ◽  
Allelic Variation ◽  
Germplasm Collection ◽  
Principal Component ◽  
Isozyme Loci ◽  
National Plant Germplasm System ◽  
The U.S

Genetic variation in cucumber accessions from China was assessed by examining variation at 21 polymorphic isozyme loci. Principal component analysis of allelic variation allowed for the depiction of two distinct groupings of Chinese accessions collected in 1994 and 1996 (67 accessions). Six isozyme loci (Gpi, Gr, Mdh-2, Mpi-2, Pep-gl, and Pep-la) were important in elucidating these major groups. These groupings were different from a single grouping of Chinese 146 accessions acquired before 1994. Allelic variation in Chinese accessions allowed for comparisons with other accessions in the U.S. National Plant Germplasm System (U.S. NPGS) collection grouped by continent and sub-continent. When Chinese accessions taken collectively were compared with an array of 853 C. sativus U.S. NPGS accessions examined previously, relationships differed between accessions grouped by country or subcontinent. Data indicate that acquisition of additional Chinese and Indian cucumber accessions would be strategically important for increasing genetic diversity in the U.S. NPGS cucumber collection.

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