New Infrageneric Taxa and Combinations in Chenopodium L. (Chenopodiaceae)

Clemants, Steven E.; Mosyakin, Sergei L.

doi:10.2307/3392049

Cited by 79 publications

(124 citation statements)

References 8 publications

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“…The cluster diagram among the treated Amaranthus genotype showed that there were genetic similarities and differences. Thus, high inter-and intraspecies variability exists even among genotypes (Mosyakin and Robertson, 1996;Štefúnová et al, 2014). Moreover, genotypes with different treatments were found in different clusters.…”

Section: Discussionmentioning

confidence: 99%

Genetic Assessment of Amaranthus Linn. Genotypes in Treatment Combinations of Glomus clarum and Leucaena leucocephala Lam. Using Simple Sequence Repeat (SSR) Marker

Olawuyi

Onuoha²

2017

mpb

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The molecular and genetic assessments of the seeds of five Amaranthus genotypes in four treatment combinations of Arbuscular mycorrhiza Fungus (Glomus clarum) and Green manure (Leucaena leucocephala) were evaluated using SSR maker with four primers. The experiment was laid out in a complete randomized design with four replicates. Heritability of growth traits were higher than yield traits for treated Amaranthus genotypes. The plant height had strong positive correlation with stem length (r=0.8919), inflorescent length (r=0.6150) and inflorescent width (r=0.6004). Prin 1 accounted for the highest variation with proportion of 0.4197 and eigenvalue of 5.8765. The study detected the polymorphism, gene and allelic diversity and established phylogenetic relationships among the Amaranthus population. NGBO1271 treated with G. clarum + L. leucocephala had the highest concentration of extracted DNA (4039.2ul), while NGBO1234 treated with G. clarum and NGBO1234 treated with L. leucocephala had highest genomic DNA nanodrop of 2.14 gl. A total of 15 alleles were detected and number of allele per primer ranged from 3 to 5 with mean value of 3.75. The highest allelic frequency of 0.75 was recorded for ASAAC005 and ASAAC006. However, ASAAC001 primer was polymorphic (66.86%), with highest allele number and allele diversity of 5.0000 and 0.7200 respectively. The result from Nei's coefficient also confirmed genetic variation based on the total gene diversity and gene diversity per locus. The dendogram among the treated Amaranthus genotypes showed their phylogenetic relationship which can be useful in selection of closely related genotypes for desirable traits. Therefore, NGBO1234 and NGBO1271, G. clarum and L. leucocephala could be suitable genotypes and further explored in genetic improvement of crops. Also, ASAAC001 primer could be considered in molecular breeding of Amaranthus and other vegetables.

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Section: Discussionmentioning

confidence: 99%

Genetic Assessment of Amaranthus Linn. Genotypes in Treatment Combinations of Glomus clarum and Leucaena leucocephala Lam. Using Simple Sequence Repeat (SSR) Marker

Olawuyi

Onuoha²

2017

mpb

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“…The North American dioecious amaranths are currently classified in the subgenus Acnida. Mosyakin and Robertson (1996) proposed that based on floral and fruit characteristics, Palmer amaranth should be placed in the section Saueranthus within this subgenus. However, other evidence suggests that Palmer amaranth may be more closely related to the monoecious spiny amaranth (A. spinosus L.).…”

Section: Taxonomy Reproductive Biology and Geneticsmentioning

confidence: 99%

Mechanism of extreme genetic recombination in weedy Amaranthus hybrids

Steinau

Skinner²,

Steinau

2003

Weed Science

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Interspecific hybridization of Palmer amaranth and common waterhemp produce hybrids with unique DNA fragments not found in either parent. The objective of this research was to investigate the mechanisms involved in the formation of the polymorphic fragments. Six novel fragments were cloned and sequenced. Five of the six were significantly similar to plant transposons, the sixth was similar to squamosa promoter–binding proteins from other plant species. Southern blot analysis using one of the novel fragments as probe revealed a consistent pattern of repetitive DNA that was species and biotype specific. These results indicate that transposon-like elements may play an important role in the formation of new fragments in Amaranthus hybrids derived from interspecific hybridization, suggesting that considerable instability of the hybrid genome may occur.

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“…Over the past decades, the systemic definition and composition of the genus has frequently been a subject of discussion (MOSYAKIN 1993;MOSYAKIN and CLEMENTS 1996, 2002. Currently the genus Dysphania comprises about 40 species that earlier constituted the subgenus Ambrosia of the genus Chenopodium or were referred to the genera: Neobotritium Moldenke, Roubieva Moquin-Tandon, Teloxys Moquin-Tandon.…”

Section: Introductionmentioning

confidence: 99%