scholarly journals Assessing Genetic Variation and Spread of Phalaris minor Resistant to ACCase Inhibiting Herbicides in Iran

2020 ◽  
Vol 38 ◽  
Author(s):  
J. GHEREKHLOO ◽  
R. ALCÁNTARA-DE LA CRUZ ◽  
M.D. OSUNA ◽  
S. SOHRABI ◽  
R. PRADO
Keyword(s):  
Genetic Variation ◽  
Genetic Relationships ◽  
Ecological Factors ◽  
Inter Simple Sequence Repeat ◽  
Phalaris Minor ◽  
Herbicide Resistant ◽  
Seed Dispersion ◽  
Inhibitor Resistance ◽  
Grass Weed ◽  
Simple Sequence

ABSTRACT: Littleseed canarygrass (Phalaris minor) is the second most serious and problematic grass weed in wheat fields in Iran, and has developed resistance to ACCase inhibiting herbicides. Inter-simple sequence repeat (ISSR) analysis was used to assess genetic variation between and within ACCase inhibitor-resistant and susceptible P. minor populations in Iran and to determine the origin of resistance and its dispersal. Sixteen P. minor populations from different regions in Iran were analysed using seven primers. Genetic relationships generated using UPGMA analysis indicated the presence of more than one genotype among the herbicide resistant populations. The results indicated that the high genetic similarity and physical proximity among the resistant P. minor populations in the different regions is mainly due to cross pollination, mechanical seed dispersion and local ecological factors. These findings suggested that independent selection as well as movement of resistant seeds had occurred, which could explain the presence and dispersion of ACCase inhibitor-resistance in these populations.

scholarly journals Determination of Genome Size, Chromosome Number, and Genetic Variation Using Inter-Simple Sequence Repeat Markers in Lotus spp.

CYTOLOGIA ◽  
2016 ◽  
Vol 81 (1) ◽  
pp. 95-102 ◽  
Author(s):  
Hidenori Tanaka ◽  
Awatsaya Chotekajorn ◽  
Sayumi Kai ◽  
Genki Ishigaki ◽  
Masatsugu Hashiguchi ◽  
...  
Keyword(s):  
Genetic Variation ◽  
Chromosome Number ◽  
Genome Size ◽  
Simple Sequence Repeat ◽  
Inter Simple Sequence Repeat ◽  
Sequence Repeat ◽  
Simple Sequence Repeat Markers ◽  
Simple Sequence

scholarly journals Comparative Analysis of Genetic Similarity between Perennial Ryegrass Genotypes Investigated With AFLPs, ISSRs, RAPDs and SSRs

2011 ◽  
Vol 42 (No. 3) ◽  
pp. 87-94 ◽  
Author(s):  
U.K. Posselt ◽  
P. Barre ◽  
G. Brazauskas ◽  
L.B. Turner
Keyword(s):  
Perennial Ryegrass ◽  
Simple Sequence Repeat ◽  
Fragment Length Polymorphism ◽  
Genetic Relationships ◽  
Random Amplified Polymorphic Dna ◽  
Correlation Coefficients ◽  
Inter Simple Sequence Repeat ◽  
Grass Species ◽  
Sequence Repeat ◽  
Simple Sequence

Perennial ryegrass (Lolium perenne L.) is the most important grass species used in temperate grassland agriculture. Our objective was to obtain an overview of the genetic relationships between 20 individual genotypes of perennial ryegrass of diverse origins, using amplified fragment length polymorphism (AFLP), inter-simple sequence repeat (ISSR), random amplified polymorphic DNA (RAPD) and two sets of simple sequence repeat (SSR) markers. All 20 individuals were uniquely fingerprinted by all four marker systems and comparisons were made on the basis of 85 markers each. Mean genetic similarities were estimated at 0.31, 0.43, 0.23 and 0.15 for AFLPs, ISSRs, RAPDs and SSRs, respectively. Cophenetic values resulted in good (AFLP and SSR-B = 0.88) to moderately good fits (ISSR = 0.76, RAPD = 0.70, and SSR-A = 0.79). Comparing the four marker systems to each other, AFLP and SSR-A were correlated best (r = 0.57). All other comparisons revealed rather low correlation coefficients in the Mantel Z test. With twice as many markers cophenetic values increased to a very good fit for AFLPs (0.90) and SSRs (0.92).      

Species delimitation in Capparis spinosa group (Capparaceae) in Iran: Multivariate morphometric analysis and ISSR markers

Phytotaxa ◽  
2020 ◽  
Vol 456 (1) ◽  
pp. 1-26
Author(s):  
MARYAM AHMADI ◽  
HOJJATOLLAH SAEIDI ◽  
MANSOUR MIRTADZADINI
Keyword(s):  
Genetic Relationships ◽  
Taxonomic Status ◽  
Inter Simple Sequence Repeat ◽  
Issr Markers ◽  
Morphological Data ◽  
Genetic Affinity ◽  
Intermediate Phenotypes ◽  
Subspecies Level ◽  
Capparis Spinosa ◽  
Simple Sequence

Multivariate morphometric approach (using PCA mix and CDA) and Inter-Simple Sequence Repeat Markers (ISSR) were used to characterize the patterns of morphological and genetic relationships of Capparis spinosa group in Iran. The morphological data analyses revealed that this complex could be divided into three main groups. C. spinosa subsp. cartilaginea and C. spinosa subsp. spinosa var. mucronifolia were reliably delineated by morphological data, but C. spinosa subsp. spinosa var. parviflora, C. spinosa subsp. spinosa var. herbacea, C. spinosa subsp. spinosa var. canescens, C. spinosa subsp. spinosa var. aegyptia and their intermediate phenotypes were overlapped. The results of ISSR data were different from morphological analyses and var. parviflora exhibited a close genetic affinity to var. mucronifolia rather than the other varieties of sub. spinosa. The results of this study revealed that subsp. cartilaginea should be recognized at species level. In case of var. parviflora, we propose subspecies level for this variety. Further investigation is needed to reveal the taxonomic status of var. mucronifolia.

Inter-simple sequence repeat (ISSR) analysis of genetic variation of Chondrus crispus populations from North Atlantic

2008 ◽  
Vol 88 (2) ◽  
pp. 154-159 ◽  
Author(s):  
Xiuliang Wang ◽  
Fengjuan Zhao ◽  
Zimin Hu ◽  
Alan T. Critchley ◽  
Steve L. Morrell ◽  
...  
Keyword(s):  
Genetic Variation ◽  
North Atlantic ◽  
Simple Sequence Repeat ◽  
Inter Simple Sequence Repeat ◽  
Chondrus Crispus ◽  
Sequence Repeat ◽  
Issr Analysis ◽  
Simple Sequence
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