Figure 4 - uploaded by Worku Negash Mhiret
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A dendrogram from combined quantitative and qualitative characters for cluster analysing average linkage between population groups.
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Linseed is the only cultivated species from the genus Linum and selection is the most frequently used method to develop varieties from the crop resulting in the reduction of the genetic diversity. Linum bienne Mill. is genetically more diverse than linseed and produces fertile hybrids with linseed. The author aimed for the development of hybrids wi...
Contexts in source publication
Context 1
... cluster analysis F2 hybrids were split into F2 from HARC 15 × L. bienne (SF2Ha), from accession 243817 and L. bienne (SF2Hb) and F2 from volunteer and mixed stand hybrids (VSF2H). That is the 76 sampled plants were grouped into seven sub-groups (Table 3 or Figure 4 for sub-groups' code). ...
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... the total dissimilarity values or matrix (Table 4) the highest dissimilarity was between CP and WP and the next highest between BCF 2 H and WP, whereas the least dissimilarity was between VSF 2 H a and SF 2 H b . Supported by Agglomeration Schedule Coefficients dendrogram (Figure 4) information suggested the different groups of plants to be classified into three clusters: cluster I (hybrid groups), cluster II (cultivated parents) and cluster III (wild parent). The different systems of clustering the genotypes indicated the existence of a large amount of diversity among the group and individual genotypes. ...
Context 3
... the number of characters used for cluster analysis is increased, especially including both qualitative and quantitative characters, classification among sampled genotypes was strong. That is, using both quantitative and qualitative characteristics in classification had more power to classify genotypes into clear clusters (Figure 4) than using quantitative characteristics alone (Figure 3). One genotype (#63) from (HARC-15 × L. bienne) × HARC-15BCF 2 H group shifted to SF 2 H genotypes' group although they were not considered as an independent cluster group, whereas one genotype (#41) from HARC-15 × L. bienne selfed F 2 H group shifted to BCF 2 H group ( Figure 3). ...
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... al. (2002) reported that samples obtained from crosses between two cultivars could cluster with samples related in pedigree but not with their expected group. The formation of independent groups (Figure 4) by the three populations: hybrids, wild and cultivated parents in cluster analysis and the occurrence of considerable differences between backcrossed and selfed F 2 hybrids in fatty acid composition pattern (Table 2) which has high heritability ( Rai et al., 1989) are valuable indicators that F 2 hybrids would contribute Table 3. Mean values of quantitative characters and scores from qualitative traits used to combine quantitative and qualitative characters. (5), and yellow (6); and 0 stands for absence whereas 1 for presence of a subtract in a population. ...
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Background:
Soil salinization and alkalization are among the major agricultural threats that affect crop productivity worldwide, which are increasing day by day with an alarming rate. In recent years, several halophytes have been investigated for their utilization in soil remediation and to decipher the mechanism of salt-tolerance in these high sa...
Seed shape is an important agronomic trait with continuous variation among genotypes. Therefore, the quantitative evaluation of this variation is highly important. Among geometric morphometrics methods, elliptic Fourier analysis and semi-landmark analysis are often used for the quantification of biological shape variations. Elliptic Fourier analysi...
Citations
... Міжвидова гібридизація між різними видами льону і раніше привертала увагу різних дослідників, які намагалися, насамперед, отримати новий селекційно цінний матеріал та визначити види-донори стійкості до різних хвороб та несприятливих умов довкілля. Серед успіхів цих досліджень можна відмітити отримання міжвидових гібридів культурного льону з деякими однорічними дикими видами, а також отримання гібридів від схрещування дикорослих видів між собою з дорощуванням незрілих зародків в штучних умовах (Mogilevskaya et al. 2002;Myshchenko 2003;Jhala et al. 2008;Soroka 2015;Kumar et al. 2016;Mhiret 2019). Але, на жаль, результати цих досліджень були обмеженими і залишилося багато питань та невирішених завдань. ...
Pale flax (Linum bienne) is long known to be the wild progenitor of cultivated flax (L. usitatissimum) and is expected to harbor an important source of genetic variability for flax genetic improvement. Here, we documented relevant studies on the taxonomy, biology, domestication, genetics, genomics, utilization, and conservation of the pale flax, with the hope of identifying the gaps in the investigation, conservation and utilization of this flax species. It was obvious that little exploration had been done, particularly regarding its utilization and conservation. Pale flax germplasm was not adequately collected across its distribution range for ex situ conservation. Explorative studies of pale flax for its use in modern flax breeding were scarce. Genetic analyses of adaptive traits and genomic analyses of pale flax germplasm were not comprehensive. Few genes of agricultural importance were reported. These documentations underline the need for a species vulnerability assessment, a comprehensive collection of extant pale flax germplasm, a detailed investigation of pale flax genes of importance to agriculture and scientific inference, and more exploration of pale flax for its utilization in the genetic improvement of cultivated flax.
