Relationship between hybrid performance and genetic variation in self-fertile and self-sterile sugar beet pollinators as estimated by SSR markers

Ćurčić, Živko; Taški-Ajduković, Ksenija; Nagl, Nevena

doi:10.1007/s10681-017-1897-1

Cited by 10 publications

(6 citation statements)

References 46 publications

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“…One of the most important characteristics of hybridization in plant breeding is that extensive genetic variation can be produced in the hybrids via sexual reproduction, which can further enrich the genetic diversity among the genotypes [ 57 , 58 ]. With a large number of genetic variations, some new traits may appear in the hybrids, which might exhibit more vigorous growth [ 59 ].…”

Section: Discussionmentioning

confidence: 99%

Photosynthetic Efficiency and Glyco-Metabolism Changes in Artificial Triploid Loquats Contribute to Heterosis Manifestation

Wang

MeiYan

et al. 2022

IJMS

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Previous studies indicated that extensive genetic variations could be generated due to polyploidy, which is considered to be closely associated with the manifestation of polyploid heterosis. Our previous studies confirmed that triploid loquats demonstrated significant heterosis, other than the ploidy effect, but the underlying mechanisms are largely unknown. This study aimed to overcome the narrow genetic distance of loquats, increase the genetic variation level of triploid loquats, and systematically illuminate the heterosis mechanisms of triploid loquats derived from two cross combinations. Here, inter-simple sequence repeats (ISSRs) and simple sequence repeats (SSRs) were adopted for evaluating the genetic diversity, and transcriptome sequencing (RNA-Seq) was performed to investigate gene expression as well as pathway changes in the triploids. We found that extensive genetic variations were produced during the formation of triploid loquats. The polymorphism ratios of ISSRs and SSRs were 43.75% and 19.32%, respectively, and almost all their markers had a PIC value higher than 0.5, suggesting that both ISSRs and SSRs could work well in loquat assisted breeding. Furthermore, our results revealed that by broadening the genetic distance between the parents, genetic variations in triploids could be promoted. Additionally, RNA-Seq results suggested that numerous genes differentially expressed between the triploids and parents were screened out. Moreover, KEGG analyses revealed that “photosynthetic efficiency” and “glyco-metabolism” were significantly changed in triploid loquats compared with the parents, which was consistent with the results of physiological indicator analyses, leaf micro-structure observations, and qRT-PCR validation. Collectively, our results suggested that extensive genetic variations occurred in the triploids and that the changes in the “photosynthetic efficiency” as well as “glyco-metabolism” of triploids might have further resulted in heterosis manifestation in the triploid loquats.

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Section: Discussionmentioning

confidence: 99%

Photosynthetic Efficiency and Glyco-Metabolism Changes in Artificial Triploid Loquats Contribute to Heterosis Manifestation

Wang

MeiYan

et al. 2022

IJMS

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“…The genotype x environment interaction could be detected by differences in the variances of the phenotypes produced by the different genotypes [10].The genetic variability among F2 plants was proven to be significant in all studied traits [26]. [27] stated that, the mean squares of F2, F3 and F4 generations showed highly significant (P≤0.01) differences for most studied traits in the two cotton crosses.The analysis of variance showed that all genotypes had significant effects on root traits in sugar beet [5]. Also, significant variations in response of hybrids and lines to the effect of environments showed the right choice of experimental sites for GEinteraction assessment [28].…”

Section: Analysis Of Variancementioning

confidence: 97%

“…However, inbreeding depression was found to be significant and positive, indicating less chances for beneficial segregants in F2 population.Positive and highly significant heterosis over the mid-parents and the better parent were found for root length, root diameter, root weight T.S.S.% traits [29]. [30], [31] and [5] mentioned that, the heterosis and heterobeltiosis values of most hybrid combinations were positive for root traits, indicating that the non-additive gene action was responsible for inheriting those traits in sugar beet. The homozygous parent has only additive effect [32]; while, the both inbred lines and the open pollinated populations were used, the deviation from the full model indicated the existence of epistatic effects [31].…”

Section: Heterosis and Inbreeding Depressionmentioning

confidence: 99%

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Comparison of Genetic Parameters in Non-segregating and Segregating Populations of Sugar Beet in Egypt

Bayomi¹,

El-Hashash

2019

AJRCS

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This work aimed mainly at comparison among non-segregating (P1, P2 and F1) and segregating (F2, BC1 and BC2) generations using genetic parameters for four traits in the cross Eg27 x Fc723 cmsduring 2015 to 2018 in Ras-Sudr station, Desert Research Center (DRC), South Sinai and Private Farm in Kafr El Sheikh Governorate. According to combined analysis of variance, highly significant environments (E) for all studied traits and significant or highly significant genotype (G) and GxE interactions for most traits were observed during six generations. In respect to mean performances, Kafr El-Shiekh location was higher than Ras-Sudr location for most studied traits at six generations. Significant differences among six generation means were found for all studied traits in the two locations. The F2 generation was lower than the P1, P2, F1, BC1 and BC2 generations for most studied traits at the two locations. The cross (Eg27 x Fc723 cms) recorded positive and highly significant heterosis, heterobeltiosis and inbreeding depression for most studied traits under two locations. A high broad sense heritability and genetic advance as percent of mean (GAM%) estimates were observed for root diameter/plant at BC1, root weight/plant at BC2 and T.S.S.% at BC1 and BC2. Generally, the values of the all studied genetic parameters for all studied traits during segregating generations were higher than non-segregating generations. The principal component analysis of the relationship between the six generations revealed that the most appropriate generations for selecting these traits were BC1 and BC2 under the two locations. Backcrossing may be done for 2–5 cycles (BC2 – BC5) at Eg27 parent for improving sugar beet yield in Egypt.

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“…Its byproducts can also serve as raw materials for producing other commodities, such as bioethanol and animal feed [4]. Due to their self-incompatibility, most commercial sugar beet varieties are hybrids descended from a single cytoplasmic male sterility (CMS) lineage, resulting in a more restricted genetic base [5][6][7]. However, introducing new characters into CMS seed parents is challenging [8].…”

Section: Introductionmentioning

confidence: 99%

Genetic Diversity and Population Structure Analysis of Excellent Sugar Beet (Beta vulgaris L.) Germplasm Resources

Peng,

Pi,

et al. 2024

Horticulturae

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This study analyzed the genetic diversity, population structure, and cluster analysis of 129 sugar beet germplasm resources to screen superior germplasms for breeding using the 27 simple sequence repeat (SSR) and 33 pairs of insertion–deletion (InDel) molecular markers. After integrating the phenotypic variation of 16 descriptive and 4 qualitative phenotypic variables, the genetic variation levels of the 129 sugar beet germplasms’ phenotypic traits were analyzed using the principal component analysis (PCA), correlation analysis, and analysis of variance methods. The genetic diversity examination of molecular markers showed a polymorphism information content (PIC) of 0.419–0.773 (mean = 0.610). Moreover, the mean number of effective alleles detected via the SSR and InDel markers was 3.054 and 2.298, respectively. Meanwhile, the PIC ranged from 0.130 to 0.602 (mean = 0.462). The population structure analysis revealed the most appropriate K-value, indicating three populations (K = 3). The genetic distances of the 129 germplasm resources ranged from 0.099 to 0.466 (mean = 0.283). The cluster analysis results demonstrated that the germplasms were grouped into three primary classes. Based on the analysis of variance, the two qualitative features with the highest coefficients of variation were petiole width (16.64%) and length (17.11%). The descriptive trait root length index (1.395) exhibited the greatest genetic diversity. The PCA reduced the 20 phenotypic traits into five principal components, contributing 51.151%. The results of this study provide a theoretical foundation for the future selection and breeding of superior sugar beet germplasm resources.

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Relationship between hybrid performance and genetic variation in self-fertile and self-sterile sugar beet pollinators as estimated by SSR markers

Cited by 10 publications

References 46 publications

Photosynthetic Efficiency and Glyco-Metabolism Changes in Artificial Triploid Loquats Contribute to Heterosis Manifestation

Photosynthetic Efficiency and Glyco-Metabolism Changes in Artificial Triploid Loquats Contribute to Heterosis Manifestation

Comparison of Genetic Parameters in Non-segregating and Segregating Populations of Sugar Beet in Egypt

Genetic Diversity and Population Structure Analysis of Excellent Sugar Beet (Beta vulgaris L.) Germplasm Resources

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