Genetic diversity and population structure of natural populations of the endangered grass Paspalum rawitscheri (Parodi) Chase ex G.H. Rua &amp; Valls (Paspaleae, Poaceae)

Freitas, Jéssica Mena Barreto de; Essi, Liliana; Tedesco, Solange Bósio

doi:10.1007/s40415-021-00699-8

Cited by 2 publications

(2 citation statements)

References 31 publications

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“…They provide high genome coverage, high effectiveness, time effectiveness, and cost-effectiveness. The analysis of genetic diversity using ISSR markers has been successfully evaluated in several species, such as Lolium [37][38][39], Paspalum rawitscheri (Parodi) Chase ex G.H.Rua and Valls [40], and Cenchrus ciliaris L. [41]. SRAP is a PCR-based dominant marker and can amplify open reading frames (ORFs) [42], as well as being a simple, reliable, moderate throughput ratio, and it reveals co-dominant markers [43] and has proven to be more informative for detecting genetic diversity than other PCR-based markers [44].…”

Section: Introductionmentioning

confidence: 99%

Genetic Variation among Aeluropus lagopoides Populations Growing in Different Saline Regions

Dar,

Al-Doss,

Assaeed

et al. 2024

Diversity

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Aeluropus lagopoides is a halophytic grass growing in different sabkhas of Saudi Arabia. In this study, 14 inter-simple sequence repeat (ISSR) and 15 sequence-related amplified polymorphism (SRAP) molecular markers were selected to investigate the genetic diversity within and among five natural populations of A. Lagopiodes. The genetic diversity varied within and among populations. ISSR markers were slightly more efficient than SRAP markers in evaluating genetic diversity. Average polymorphism information content, effective number of alleles, Nei’s genetic diversity, and Shannon’s information index values of ISSR markers were higher than SRAP. Analysis of molecular variance revealed about 40% genetic variation among the population and 60% within the population. Overall, the genetic diversity was lowest in Jouf (40%), while the Qaseem populations were the highest (60%). Jizan populations were highly dissimilar to other regions. A Mantel test indicated a positive correlation between geographic and genetic distance. The cluster analysis showed three groups; the first group comprises Jouf and Salwa populations, the second group comprises Qareenah and Qaseem, and the third group comprises the Jizan population. This observation matched the geographic distribution of the species. These findings can help in the conservation of a diverse population of A. lagopoides in saline regions as well as rehabilitation of these degraded unique habitats.

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Section: Introductionmentioning

confidence: 99%

Genetic Variation among Aeluropus lagopoides Populations Growing in Different Saline Regions

Dar,

Al-Doss,

Assaeed

et al. 2024

Diversity

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“…Some researchers have used ISSR markers to construct genetic relationship maps for several germplasms of the genus Paspalum (Zilli et al, 2014). The genetic diversity of four local populations of the genus Paspalum has also been analyzed and assessed using ISSR marker techniques (Freitas et al, 2021). Compared with other markers, such as restriction fragment length polymorphisms (RFLP), simple sequence repeats (SSR) and random amplified length polymorphisms (RAPD), ISSR markers are more useful in identifying more polymorphisms in genetic diversity studies (Marsh & Ayres, 2002; Wang et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Evaluation of genetic diversity and production adaptability in different germplasms of Paspalum dilatatum

et al. 2023

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Paspalum dilatatum is an excellent warm-season forage grass and soil conservation plant in subtropical regions. However, information on P. dilatatum cultivation in southwestern China is limited. A preliminary evaluation of the genetic diversity and adaptability of six P. dilatatum germplasms was conducted in Guizhou based on inter simple sequence repeat (ISSR) markers and field trials. Fifteen polymorphic primers were screened from 50 ISSR primers. A total of 141 bands were generated, 124 of which were polymorphic, yielding 88.63% polymorphic bands. The number of polymorphic loci detected for the different germplasms ranged from 23 to 61, and the percentage of polymorphic loci was 40.67%. The mean number of alleles was 1.23, and the effective allele number was 1.15. Nei's genetic diversity index was 0.08. The Shannon information index was 0.12, and the genetic similarity coefficient (GSC) ranged from 0.6002 to 0.8955, indicating a relatively rich genetic base among the germplasms. The unweighted pair group method with arithmetic mean approach was used to construct the clustering map. Using a GSC of 0.83 as the threshold value, the six germplasm materials were divided into four clusters, indicating that ISSR molecular markers can be effectively applied to analyze the genetic diversity of P. dilatatum germplasms. Cluster analysis of 12 growth characteristics of the germplasms of P. dilatatum showed that germplasm 4 exhibited strong tillering ability and a high crude protein content. Germplasm 3 showed high plant height, fresh yield and hay yield. Germplasm 1 showed the lowest forage yield and crude protein content. Germplasms 2, 5 and 6 showed excellent crude protein and crude fat contents; the remaining indicators showed intermediate performance. This study provides important references for the utilization and variety selection of introduced P. dilatatum resources in the karst areas of Guizhou.

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Genetic diversity and population structure of natural populations of the endangered grass Paspalum rawitscheri (Parodi) Chase ex G.H. Rua & Valls (Paspaleae, Poaceae)

Cited by 2 publications

References 31 publications

Genetic Variation among Aeluropus lagopoides Populations Growing in Different Saline Regions

Genetic Variation among Aeluropus lagopoides Populations Growing in Different Saline Regions

Evaluation of genetic diversity and production adaptability in different germplasms of Paspalum dilatatum

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