Abstract
A field experiment was conducted at Kulumsa Agricultural Research Center in order to estimate the extent of genetic variation in Ethiopian mustard (Brassica carinata A. Braun). In this study, genetic diversity in 60 Ethiopian mustard genotypes, collected from 16 regions of Ethiopia, were assessed using the techniques of cluster and principal component analyses based on 16 traits. All traits were significantly (P < 0.01) different and the genotypes were grouped into seven clusters. The largest and the smallest clusters comprised about 28.3 and 1.7%, respectively, of the studied genotypes. Genotypes in clusters II and VII showed better performance for the majority of traits of interest: seed yield/plot, seed yield/plant, biomass/plot, biomass/plant, plant height, number of pods/plant, 1000 seeds’ weight and oil content. The clustering pattern of the tested genotypes indicated no relationships between genetic diversity and geographic origins since genotypes from the same origin were grouped into different clusters or vice versa. The average inter-cluster distances were significant for all clusters. The D2 statistics analysis showed that the distance between clusters IV and V was minimum (D2 = 22.085) while distance between clusters VI and VII was maximum (D2 = 1239.00), suggesting the existence of diversity among the genotypes, and hence, parental materials can be selected and used for hybridization and subsequent improvement of Ethiopian mustard. Maximum variations in subsequent generations is expected if there is crossing of parents selected from clusters II and VII with those from clusters III, IV, and VI since the intercluster distances between these groups were large. On the other hand, crossing between clusters I, IV and V; I and II, and III and IV might not produce desirable recombinants since the inter-cluster distance between these groups was very small, indicating similarity of their genetic make-up. The first six principal components accounted for 92% of the total variations encountered. The first three principal components accounted for 36, 22and 19% of the variations, respectively. Days to flowering, days to maturity, seed yield/plot, oil yield/plot and biomass/plot were the most important traits contributing to the total variation of the first principal component, implying the existence of great potential to improve these traits through selection.Keywords: Brassica carinata; Cluster Analysis; Ethiopian Mustard; Genetic Diversity
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Claims 16
Claim · model-written summary
The 60 Ethiopian mustard genotypes were grouped into seven clusters.
- Taxon
- Ethiopian mustard
Brassica carinatat0 - Outcome
- clusterse0
- Value
- seven clusterse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Genetic diversity in Ethiopian mustard (Bbrassica carinata a. braun)”
e0“All traits were significantly (P < 0.01) different and the genotypes were grouped into seven clusters”
Claim · model-written summary
All 16 traits differed significantly among the genotypes (P < 0.01).
- Taxon
- Ethiopian mustardBrassica carinatat0
- Outcome
- traitse0
- Value
- P < 0.01e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Genetic diversity in Ethiopian mustard (Bbrassica carinata a. braun)”
e0“All traits were significantly (P < 0.01) different and the genotypes were grouped into seven clusters”
Claim · model-written summary
The largest and smallest clusters comprised about 28.3% and 1.7% of the genotypes.
- Taxon
- Ethiopian mustardBrassica carinatat0
- Outcome
- The largest and the smallest clusterse0
- Value
- 28.3 and 1.7%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Genetic diversity in Ethiopian mustard (Bbrassica carinata a. braun)”
e0“The largest and the smallest clusters comprised about 28.3 and 1.7%, respectively, of the studied genotypes”
Claim · model-written summary
Genotypes in clusters II and VII performed better for seed yield per plot, seed yield per plant and biomass per plot.
- Taxon
- Ethiopian mustardBrassica carinatat0
- Material
- clusters II and VIIe0
- Outcome
- seed yield/plot, seed yield/plant, biomass/plote0
- Direction
- bettere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Genetic diversity in Ethiopian mustard (Bbrassica carinata a. braun)”
e0“Genotypes in clusters II and VII showed better performance for the majority of traits of interest: seed yield/plot, seed yield/plant, biomass/plot, biomass/plant, plant height, number of pods/plant, 1000 seeds’ weight and oil content”
Claim · model-written summary
Genotypes in clusters II and VII performed better for biomass per plant, plant height and number of pods per plant.
- Taxon
- Ethiopian mustardBrassica carinatat0
- Material
- clusters II and VIIe0
- Outcome
- biomass/plant, plant height, number of pods/plante0
- Direction
- bettere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Genetic diversity in Ethiopian mustard (Bbrassica carinata a. braun)”
e0“Genotypes in clusters II and VII showed better performance for the majority of traits of interest: seed yield/plot, seed yield/plant, biomass/plot, biomass/plant, plant height, number of pods/plant, 1000 seeds’ weight and oil content”
Claim · model-written summary
Genotypes in clusters II and VII performed better for 1000-seed weight and oil content.
- Taxon
- Ethiopian mustardBrassica carinatat0
- Material
- clusters II and VIIe0
- Outcome
- 1000 seeds’ weight and oil contente0
- Direction
- bettere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Genetic diversity in Ethiopian mustard (Bbrassica carinata a. braun)”
e0“Genotypes in clusters II and VII showed better performance for the majority of traits of interest: seed yield/plot, seed yield/plant, biomass/plot, biomass/plant, plant height, number of pods/plant, 1000 seeds’ weight and oil content”
Claim · model-written summary
Genetic diversity showed no relationship with geographic origin of the genotypes.
- Taxon
- Ethiopian mustardBrassica carinatat0
- Outcome
- genetic diversitye0
- Direction
- no relationshipse0
- Comparator
- geographic originse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Genetic diversity in Ethiopian mustard (Bbrassica carinata a. braun)”
e0“The clustering pattern of the tested genotypes indicated no relationships between genetic diversity and geographic origins”
Claim · model-written summary
The distance between clusters IV and V was the smallest inter-cluster distance (D2 = 22.085).
- Taxon
- Ethiopian mustardBrassica carinatat0
- Outcome
- the distance between clusters IV and Ve0
- Direction
- minimume0
- Value
- D2 = 22.085e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Genetic diversity in Ethiopian mustard (Bbrassica carinata a. braun)”
e0“the distance between clusters IV and V was minimum (D2 = 22.085)”
Claim · model-written summary
The distance between clusters VI and VII was the largest inter-cluster distance (D2 = 1239.00).
- Taxon
- Ethiopian mustardBrassica carinatat0
- Outcome
- distance between clusters VI and VIIe0
- Direction
- maximume0
- Value
- D2 = 1239.00e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Genetic diversity in Ethiopian mustard (Bbrassica carinata a. braun)”
e0“distance between clusters VI and VII was maximum (D2 = 1239.00)”
Claim · model-written summary
Parental materials can be selected from the clusters for hybridization and improvement of Ethiopian mustard.
- Taxon
- Ethiopian mustardBrassica carinatat0
- Outcome
- parental materialse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Genetic diversity in Ethiopian mustard (Bbrassica carinata a. braun)”
e0“parental materials can be selected and used for hybridization and subsequent improvement of Ethiopian mustard”
Claim · model-written summary
Maximum variation is expected in later generations from crosses of clusters II and VII with clusters III, IV and VI.
- Taxon
- Ethiopian mustardBrassica carinatat0
- Outcome
- Maximum variations in subsequent generationse0
- Qualifier
- crossing of parents selected from clusters II and VIIe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Genetic diversity in Ethiopian mustard (Bbrassica carinata a. braun)”
e0“Maximum variations in subsequent generations is expected if there is crossing of parents selected from clusters II and VII with those from clusters III, IV, and VI”
Claim · model-written summary
Crosses between clusters I, IV and V, I and II, and III and IV might not produce desirable recombinants.
- Taxon
- Ethiopian mustardBrassica carinatat0
- Outcome
- desirable recombinantse0
- Qualifier
- might not producee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Genetic diversity in Ethiopian mustard (Bbrassica carinata a. braun)”
e0“crossing between clusters I, IV and V; I and II, and III and IV might not produce desirable recombinants”
Claim · model-written summary
The first six principal components accounted for 92% of the total variation.
- Taxon
- Ethiopian mustardBrassica carinatat0
- Outcome
- total variationse0
- Value
- 92%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Genetic diversity in Ethiopian mustard (Bbrassica carinata a. braun)”
e0“The first six principal components accounted for 92% of the total variations encountered”
Claim · model-written summary
The first three principal components accounted for 36, 22 and 19% of the variation, respectively.
- Taxon
- Ethiopian mustardBrassica carinatat0
- Outcome
- variationse0
- Value
- 36, 22and 19%e0
- Qualifier
- respectivelye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Genetic diversity in Ethiopian mustard (Bbrassica carinata a. braun)”
e0“The first three principal components accounted for 36, 22and 19% of the variations, respectively”
Claim · model-written summary
Days to flowering, days to maturity and seed yield per plot were the most important traits contributing to the first principal component.
- Taxon
- Ethiopian mustardBrassica carinatat0
- Outcome
- Days to flowering, days to maturity, seed yield/plote0
- Qualifier
- contributing to the total variation of the first principal componente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Genetic diversity in Ethiopian mustard (Bbrassica carinata a. braun)”
e0“Days to flowering, days to maturity, seed yield/plot, oil yield/plot and biomass/plot were the most important traits contributing to the total variation of the first principal component”
Claim · model-written summary
Oil yield per plot and biomass per plot were among the most important traits contributing to the first principal component.
- Taxon
- Ethiopian mustardBrassica carinatat0
- Outcome
- oil yield/plot and biomass/plote0
- Qualifier
- contributing to the total variation of the first principal componente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Genetic diversity in Ethiopian mustard (Bbrassica carinata a. braun)”
e0“Days to flowering, days to maturity, seed yield/plot, oil yield/plot and biomass/plot were the most important traits contributing to the total variation of the first principal component”