Analysis on Genetic Diversity and Genetic Basis of the Main Sesame Cultivars Released in China

Zhang, Yanxin; Sun, Junming; Zhang, Xiurong; Wang, Linhai; Che, Zhuo

doi:10.1016/s1671-2927(11)60031-x

Cited by 18 publications

(20 citation statements)

References 13 publications

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“…However, the polymorphic rate observed in this study was much higher than that generated using SRAP markers in other plant species, including 73.4% in cassava varieties [48], 56.0% in eggplant and related Solanum species [49], 47.2% and 72% in sesame [39,40], 81.97% in Pogostemon [50], 49.39% in Brassica juncea [51], 72.7% in Cucurbita pepo [52], 66.2% in Cucurbita moschata [35], 57% and 76.4% in safflower [41,42], 43% in Coffea arabica [45], 50% in Turkish okra [53], and 83% in sugarcane germplasm collections [37]. The variation of polymorphism rate reflects the extend of genetic divergence among and within the populations and/or genotypes studied and SRAP combinations used.…”

Section: Discussionmentioning

confidence: 66%

Molecular Diversity Assessment Using Sequence Related Amplified Polymorphism (SRAP) Markers in Vicia faba L.

Alghamdi

Al-Faifi

Migdadi

et al. 2012

IJMS

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Sequence-related amplified polymorphism (SRAP) markers were used to assess the genetic diversity and relationship among 58 faba bean (Vicia faba L.) genotypes. Fourteen SRAP primer combinations amplified a total of 1036 differently sized well-resolved peaks (fragments), of which all were polymorphic with a 0.96 PIC value and discriminated all of the 58 faba bean genotypes. An average pairwise similarity of 21% was revealed among the genotypes ranging from 2% to 65%. At a similarity of 28%, UPGMA clustered the genotypes into three main groups comprising 78% of the genotypes. The local landraces and most of the Egyptian genotypes in addition to the Sudan genotypes were grouped in the first main cluster. The advanced breeding lines were scattered in the second and third main clusters with breeding lines from the ICARDA and genotypes introduced from Egypt. At a similarity of 47%, all the genotypes formed separated clusters with the exceptions of Hassawi 1 and Hassawi 2. Group analysis of the genotypes according to their geographic origin and type showed that the landraces were grouped according to their origin, while others were grouped according to their seed type. To our knowledge, this is the first application of SRAP markers for the assessment of genetic diversity in faba bean. Such information will be useful to determine optimal breeding strategies to allow continued progress in faba bean breeding.

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Section: Discussionmentioning

confidence: 66%

Molecular Diversity Assessment Using Sequence Related Amplified Polymorphism (SRAP) Markers in Vicia faba L.

Alghamdi

Al-Faifi

Migdadi

et al. 2012

IJMS

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“…There are currently 4251 accessions in the Chinese sesame germplasm collection. More than 80 cultivars were released in the period between 1950 and 2012 [ 6 , 7 ]. Despite of the number of commercial cultivars, a main hindrance in sesame production is the lack of cultivars with high-yield stability and adaptability.…”

Section: Introductionmentioning

confidence: 99%

“…Despite of the number of commercial cultivars, a main hindrance in sesame production is the lack of cultivars with high-yield stability and adaptability. Domestication and modern plant breeding have presumably narrowed the genetic basis of cultivated sesame, as has been in wheat, maize and other field crops [ 6 , 8 , 9 ]. These modern sesame cultivars were bred with a limited number of landrace cultivars in their pedigree.…”

Section: Introductionmentioning

confidence: 99%

“…It is necessary to take reliable identification of these sesame cultivars through DNA fingerprinting by molecular markers, which has been widely used for checking the identity and purity of cultivars and for assessing their genetic variability in different crops [ 8 - 13 ]. In sesame, the genetic diversity has been detected by universal markers such as amplified fragment length polymorphism (AFLP) [ 14 , 15 ], sequence-related amplified polymorphisms (SRAP) [ 6 , 7 , 16 ], random amplified polymorphic DNA (RAPD) [ 17 - 19 ] and inter-simple sequence repeat (ISSR) [ 20 , 21 ]. Applications of sequence-specific markers such as genomic simple sequence repeats (Genomic-SSR) [ 22 - 24 ] and expressed sequence tag-SSR (EST-SSR) [ 25 , 26 ] were also documented.…”

Section: Introductionmentioning

confidence: 99%

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Genetic analysis and molecular characterization of Chinese sesame (Sesamum indicum L.) cultivars using Insertion-Deletion (InDel) and Simple Sequence Repeat (SSR) markers

Yang

Liu

et al. 2014

BMC Genet

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BackgroundSesame is an important and ancient oil crop in tropical and subtropical areas. China is one of the most important sesame producing countries with many germplasm accessions and excellent cultivars. Domestication and modern plant breeding have presumably narrowed the genetic basis of cultivated sesame. Several modern sesame cultivars were bred with a limited number of landrace cultivars in their pedigree. The genetic variation was subsequently reduced by genetic drift and selection. Characterization of genetic diversity of these cultivars by molecular markers is of great value to assist parental line selection and breeding strategy design.ResultsThree hundred and forty nine simple sequence repeat (SSR) and 79 insertion-deletion (InDel) markers were developed from cDNA library and reduced-representation sequencing of a sesame cultivar Zhongzhi 14, respectively. Combined with previously published SSR markers, 88 polymorphic markers were used to assess the genetic diversity, phylogenetic relationships, population structure, and allele distribution among 130 Chinese sesame accessions including 82 cultivars, 44 landraces and 4 wild germplasm accessions. A total of 325 alleles were detected, with the average gene diversity of 0.432. Model-based structure analysis revealed the presence of five subgroups belonging to two main groups, which were consistent with the results from principal coordinate analysis (PCA), phylogenetic clustering and analysis of molecular variance (AMOVA). Several missing or unique alleles were identified from particular types, subgroups or families, even though they share one or both parental/progenitor lines.ConclusionsThis report presented a by far most comprehensive characterization of the molecular and genetic diversity of sesame cultivars in China. InDels are more polymorphic than SSRs, but their ability for deciphering genetic diversity compared to the later. Improved sesame cultivars have narrower genetic basis than landraces, reflecting the effect of genetic drift or selection during breeding processes. Comparative analysis of allele distribution revealed genetic divergence between improved cultivars and landraces, as well as between cultivars released in different years. These results will be useful for assessing cultivars and for marker-assisted breeding in sesame.

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“…The MCID strategy developed by Zhang et al (2011) has been found to make DNA markers more usable in the identification of genotyped plant individuals of different species (Zhao et al, 2011;Wang et al, 2011;Li et al, 2011), and therefore, the main objective of this study was to explore the feasibility of using the MCID strategy and employing modified RAPD to identify tomato varieties in a practicable, efficient, recordable, and referable manner. A total of 42 selected tomato varieties were identified and a referable cultivar identification diagram (CID) of these tomato varieties developed.…”

Section: Introductionmentioning

confidence: 99%

A novel and efficient strategy for practical identification of tomato (Solanum lycopersicon) varieties using modified RAPD fingerprints

Korir

Li²,

Leng³

et al. 2013

Genet. Mol. Res.

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ABSTRACT.Tomato breeding and variety development have led to the generation of a large number of varieties in many countries worldwide. This has created a growing and urgent need for an improved strategy for genotyping and identification since the traditional methods based on phenotype are growing unreliable. DNA markers could provide distinct benefits in tomato variety identification; however, DNA fingerprint analyses have not made DNA marker data readily usable for identification of varieties in tomato and other crops. A manual cultivar and/or variety identification diagram (MCID) strategy has been developed and has been found to make DNA markers more usable for the identification of genotyped plant individuals. We adopted this strategy, using modified RAPD markers to identify 42 tomato varieties from different geographical origins and seed merchants. All of the varieties were clearly separated and individually identified by reproducible fingerprints of only 6 RAPD primers. The tomato MCID that is generated is usable for the identification of any two or more tomato varieties. In addition, fewer primers can be used to make a distinction between varieties using this approach, since the selected fingerprints from each primer are used after they have been generated. The information in this 1817 ©FUNPEC-RP www.funpecrp.com.br Genetics and Molecular Research 12 (2): 1816-1828 (2013 An efficient strategy for identification of tomato varieties first version of the tomato MCID can be enriched through identification and incorporation of more varieties and adaptation to other molecular markers in order to provide a more comprehensive tomato variety identification service for the horticultural industry.

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Analysis on Genetic Diversity and Genetic Basis of the Main Sesame Cultivars Released in China

Cited by 18 publications

References 13 publications

Molecular Diversity Assessment Using Sequence Related Amplified Polymorphism (SRAP) Markers in Vicia faba L.

Molecular Diversity Assessment Using Sequence Related Amplified Polymorphism (SRAP) Markers in Vicia faba L.

Genetic analysis and molecular characterization of Chinese sesame (Sesamum indicum L.) cultivars using Insertion-Deletion (InDel) and Simple Sequence Repeat (SSR) markers

A novel and efficient strategy for practical identification of tomato (Solanum lycopersicon) varieties using modified RAPD fingerprints

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