Genetic diversity of elite sweet sorghum genotypes assessed by SSR markers

Pei, Zhongyou; Gao, Jianming; Chen, Q.; Jiang, Wei; Li, Z.; Luo, Feng; Shi, Lili; Ding, Bo; Sun, Shi

doi:10.1007/s10535-010-0116-x

Cited by 28 publications

(20 citation statements)

References 30 publications

(35 reference statements)

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“…Ils sont peu productifs et ont des grains de mauvaise qualité. Ces sorghos sont cultivés dans plusieurs pays comme les Etats-Unis (Ali et al, 2007 ;Murray et al, 2009 ;Wang et al, 2009), le Niger (Deu et al, 2008, la Chine (Zhang et al, 2009 ;Pei et al, 2010), la Guinée et le Mali (Sagnard et al, 2011). Le sorgho à tige sucrée est traditionnellement cultivé en Afrique où leurs tiges sont consommées comme friandises et leurs grains sont utilisés dans l'alimentation humaine et animale.…”

Section: Introductionunclassified

“…Les variétés de sorgho à tige sucrée sont majoritairement de la race bicolor (Harlan et De Wet, 1972 ;Deu et al, 2008 ;Chantereau et al, 2010 ;Sagnard et al, 2011). Selon Pei et al (2010), les sorghos à tige sucrée ont une diversité génétique modérée. Au Burkina Faso, les sorghos à tige sucrée ou « kankansiido » en langue mooré, n'ont pas encore été caractérisés, bien qu'ils y soient cultivés dans des conditions agro-écologiques variées.…”

Section: Introductionunclassified

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Variation de caractères agromorphologiques et du Brix d’une collection de sorghos à tige sucrée du Burkina Faso

Nebie¹,

Nanema²,

Bationo-Kando³

et al. 2014

Int. J. Bio. Chem. Sci

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RESUMELe sorgho à tige sucrée est de nos jours une plante d'intérêt utilisée pour la production de biocarburant. Au Burkina Faso, les ressources génétiques de ce sorgho ne sont pas connues, encore moins exploitées. Pour comprendre les relations entre la concentration en sucre des tiges et les caractères agromorphologiques de cette plante, 117 accessions ont été collectées dans quatre zones agro-climatiques du Burkina Faso. La caractérisation a été faite à partir de 15 variables quantitatives et de variables qualitatives qui discriminent pour la plupart les races de sorgho cultivé. Cette étude montre que les sorghos à tige sucrée du Burkina Faso présentent une diversité raciale plus importante en comparaison avec ceux d'autres pays comme le Mali et la Guinée. La majorité des accessions à nervure verte (77,21% d'entre elles) ont des tiges juteuses jusqu'à la maturité physiologique des grains. Le Brix des tiges au stade grain dur varie entre 8,88 et 21,83%. Il est négativement corrélé au rendement en grains par plante. Les accessions les plus sucrées sont celles à cycle long avec une importante biomasse. Les facteurs « zone climatique » et « race botanique» contribuent tous à expliquer la diversité observée avec cependant un effet plus important du facteur racial.

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Section: Introductionunclassified

Variation de caractères agromorphologiques et du Brix d’une collection de sorghos à tige sucrée du Burkina Faso

Nebie¹,

Nanema²,

Bationo-Kando³

et al. 2014

Int. J. Bio. Chem. Sci

View full text Add to dashboard Cite

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“…Compared to SNP marker system, SSR markers requires just the primer sequences which are usually available once published. This is the primary reason why so much effort has been devoted to developing SSR markers (Kong et al 2000;Li et al 2009;Ramu et al 2009;Srinivas et al 2009;Yonemaru et al 2009) and to using SSR markers in genetic mapping (Bhattramakki et al 2000;Haussmann et al 2002;Wu and Huang 2006), diversity studies (Abu Assar et al 2005;Agrama and Tuinstra 2003;Ali et al 2008;Anas and Yoshida 2004;Barnaud et al 2007;Caniato et al 2007;Casa et al 2005;Deu et al 2008;Dillon et al 2005;Folkertsma et al 2005;Ghebru et al 2002;Menz et al 2004;Pei et al 2010;Shehzad et al 2009b;Smith et al 2000;Wang et al 2009b) and molecular breeding (Knoll and Ejeta 2008) in sorghum. The objective of this study was to identify SSR markers associated with sorghum stem height using the aforementioned poolbased genome-wide association mapping technique.…”

Section: Introductionmentioning

confidence: 99%

Identification of SSR markers associated with height using pool-based genome-wide association mapping in sorghum

et al. 2011

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Sorghum has been proposed as a potential energy crop. However, it has been traditionally bred for grain yield and forage quality, not traits related to bioenergy production. To develop tools for genetic improvement of bioenergy-related traits such as height, genetic markers associated with these traits have to be identified first. Association mapping has been extensively used in humans and in some crop plants for this purpose. However, genome-wide association mapping using the whole association panel is costly and time-consuming. A variation of this method called pool-based genome-wide association mapping has been extensively used in humans. In this variation, pools of individuals with contrasting phenotypes, instead of the whole panel, are screened with genetic markers and polymorphic markers are confirmed by screening the individuals in the pools. Here we identified several new simple sequence repeats (SSR) markers associated with height using this pool-based genome-wide association mapping in sorghum.After screening the tall and short pools of sorghum accessions from the sorghum mini core collection developed at the International Crops Research Institute for the Semi-Arid Tropics with 703 SSR markers, we have identified four markers that are closely associated with sorghum height on chromosomes 2, 6, and 9. Comparison with published maps indicates that all four markers are clustered with markers previously mapped to height or height-related traits and with candidate genes involved in regulating plant height such as FtsZ, Ugt, and GA 2-oxidase. The mapping method can be applied to other crop plants for which a high throughput genome-wide association mapping platform is not yet available.

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“…PIC values provide an estimation of marker power by considering both the number of alleles at a locus and the relative frequencies of those alleles in the population under study (Pei et al, 2010). Our observed Table 1. average PIC value was 0.23, whereas the average PIC value of a core set of SSR markers for Gossypium species ranged from 0.0 to 0.82 (Yu et al, 2012).…”

Section: Discussionmentioning

confidence: 99%

Genetic diversity of Turkish commercial cotton varieties revealed by molecular markers and fiber quality traits

Elçi¹,

Akışcan²,

Akgöl³

2014

Turk J Bot

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To assess the genetic diversity and relationships among commercial Gossypium species released in Turkey between 1964 and 2014, 96 cotton varieties were analyzed using morphological and molecular markers. Morphological analysis was performed based on 4 fiber quality traits including fiber length, strength, fineness, and uniformity, and the mean values of each trait for each genotype were calculated using 2-year data. The results showed that most of the genotypes have long fiber length, very high fiber strength, coarse (45 genotypes) or average (50 genotypes) fiber fineness, and high uniformity. Twenty-six simple sequence repeat (SSR) markers and 14 markers linked to quantitative trait loci (QTLs) for fiber quality traits produced a total of 103 alleles, with an average of 2.57 alleles per locus ranging from 80 bp to 300 bp products, with an average polymorphism information content (PIC) value of 0.233. Markers DPL513 and DPL431 (among 26 SSR markers) and markers CIR246 and BNL4108 (among 14 molecular markers) were found to be very informative, with 0.724, 0.663, 0.749, and 0.583 PIC values, respectively. The combined morphological and molecular data analysis resulted in more than 8 clades using the unweighted pair group method with arithmetic average (UPGMA). The upland cotton varieties were distinctly separated from the lowland cotton variety Maydos Yerlisi (Gossypium herbaceum L.). Within the upland cotton varieties, the Egyptian cotton variety Giza 70 (G. barbadense L.) was distinctly separated from commercial cotton varieties of Turkey (G. hirsutum L.), as revealed by both morphological and molecular dendrograms. Principal component analysis (PCA) derived from combined data was in agreement with UPGMA analysis. It is concluded that commercial Turkish cotton varieties have a good genetic diversity with high fiber quality, considering the upland cotton's narrow genetic structure. These results can provide a useful guide for selecting specific germplasm with distinct genetic backgrounds in cotton breeding programs.

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Genetic diversity of elite sweet sorghum genotypes assessed by SSR markers

Cited by 28 publications

References 30 publications

Variation de caractères agromorphologiques et du Brix d’une collection de sorghos à tige sucrée du Burkina Faso

Variation de caractères agromorphologiques et du Brix d’une collection de sorghos à tige sucrée du Burkina Faso

Identification of SSR markers associated with height using pool-based genome-wide association mapping in sorghum

Genetic diversity of Turkish commercial cotton varieties revealed by molecular markers and fiber quality traits

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