Chromosome number variation in a promising oilseed woody crop,<i>Plukenetia volubilis</i>L. (Euphorbiaceae)

Cai, Zheng; Zhang, T.; Jian, Hong

doi:10.1080/00087114.2013.780442

Cited by 11 publications

(7 citation statements)

References 24 publications

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“…have superior levels of adaptability and higher probabilities of survival than their diploid relatives (Soltis and Soltis 2000). The presence of intraspecific differences in chromosome number in sugarcane is in accordance with the findings of Cai et al (2013), who reported high and diverse cytological variation in Plukanetia volubelis L.; whereas recent studies on different varieties of Vicia faba and 15 different accessions of Iranian lettuce collected from different regions showed cytological similarities with similar chromosome number (Mousavi et al 2013;Vandana and Chaudhari 2013). The data on cytological characterization of cultivated and wild species of Saccharum available in the global sugarcane germplasm will be useful in selecting the parents while designing crosses during hybridization.…”

Section: Resultssupporting

confidence: 76%

New determinations of somatic chromosome number in cultivated and wild species ofSaccharum

Sobhakumari

2013

Caryologia

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Thirty-one clones of Saccharum officinarum, collected from New Guinea, were analysed and the somatic chromosome number was determined. Of the 31 clones, 29 showed 2n = 80 (typical clones), while two clones, NG 77-56 and NG 77-26, were atypical with 2n = 116 and 70 respectively. Chromosome number was determined for 62 clones of S. spontaneum, available in the world germplasm collection, through root tip mitosis. Variable numbers were identified from the same area of collection. Clones collected from north-western regions (Gujarat and Rajasthan) of India showed a majority of 2n = 80 types and 2n = 64 types, whereas 62% of clones collected from Meghalaya (north-east) showed 2n = 64. This is the first time that 2n = 80 cytotypes of S. spontaneum have been reported from the western sector of India. The clones collected from Himachal Pradesh and Uttaranchal showed lower number, e.g. 2n = 56 and 2n = 60.

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Section: Resultssupporting

confidence: 76%

New determinations of somatic chromosome number in cultivated and wild species ofSaccharum

Sobhakumari

2013

Caryologia

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“…Allopolyploidy has proved to be a powerful evolutionary factor that has played a decisive role in the evolution of most higher plants and accelerates genome evolution in two ways: revolutionary changes and evolutionary changes (Feldman and Levy 2009). Cai et al (2013) also confirmed polyploidy as the most significant evolutionary trend in chromosome number within Plukenetia species, a promising oilseed woody crop. Hybridization is frequent in many organismal groups.…”

Section: Discussionmentioning

confidence: 90%

Parental origin and genomic evolution of tetraploidGossypiumspecies by molecular marker and GISH analyses

Chen

et al. 2013

Caryologia

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Polyploidy is a common phenomenon that has played a significant role in the evolutionary history of angiosperms. The allopolyploid Gossypium species (AD-genome) is the result of hybridization between two diploid species (A-genome and D-genome). In order to further explore the possible A-and D-genome donor of extant tetraploid cotton species, two molecular markers (random amplified polymorphic DNA [RPAD] and simple sequence repeat [SSR]) were employed on 13 cotton species including nine diploid (two A-genome and seven D-genome) and four tetraploid cotton species (ADgenome). Genomic in situ hybridization (GISH) was also used to further confirm the genomic origin and organization of tetraploid cotton species. The result showed that 26 of 40 RAPD primers and 49 of 120 SSR primers were polymorphic by 65% and 40.8% respectively. Clustering analyses for RAPD and SSR results indicated that the genome of G. raimondii is the nearest to the D-subgenome of tetraploid species, and it may be the ancestral D-genome donor of the tetraploid cotton. Because of the greatest genetic similarity coefficient between G. herbaceum and G. arboreum, two A-genome diploid species are phylogenetically equidistant from extant tetraploid cotton. GISH using one parental gDNA from A-or D-genome as a labeled probe together with an excess of another as blocking DNA, and tetraploid cotton as target, was found to a superior method for clearly distinguishing between two putative parental genomes. The phylogenetic and GISH results in this paper supported the hypothesis that the donors of the parental genomes are sisters of G. arboreum or G. herbaceum and G. raimondii and provided direct evidence for the origin and monophyly of the polyploidy Gossypium species.

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“…They are pollinated mainly by anemophilia and entomofilia, and the most important pollinators are Formicidae (Anteparra et al 2014). According to Cai et al (2013), sacha inchi is a polyploid species, with chromosomes numbers ranging from 2n = 50 to 2n = 86.…”

Section: Abstract Resumomentioning

confidence: 99%

Molecular genetic diversity and mating system in sacha inchi progenies1

Valente

Lopes

Chaves

et al. 2017

Pesqui. Agropecu. Trop.

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Sacha inchi (Plukenetia volubilis L.) is a species with nutraceutical benefits traditionally consumed by Amazonic indigenous and urban communities. Studies on the genetic diversity and mating system are required to preserve and make the best use of the genetic resources for this species. This study aimed to estimate the genetic diversity and mating system parameters of sacha inchi progenies using Amplified Fragment Length Polymorphism (AFLP) markers. A total of 360 progenies from 30 accessions of sacha inchi were analyzed using three AFLP primers combinations. The percentage variation between and within families and the crossing rate, among other parameters, were estimated. The AFLP markers were efficient in genetically differentiating progenies, revealing 251 (98.82 %) polymorphic fragments. The analysis of molecular variance showed that the strongest variation occurs between progenies (57.16 %). However, the genetic differentiation within progenies was considerable (42.84 %), and could be exploited in breeding programs. The estimated population outcrossing rate was high (0.957), indicating it is a predominantly allogamous species. On the other hand, 33.7 % of the crosses occurred between related individuals. The estimate for biparental crosses revealed that the progenies consisted mainly of half-siblings (66.9 %) and full-siblings (28.8 %). For purposes of breeding and ex situ genetic conservation, sacha inchi seeds should be collected from a large number of parent plants.

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Chromosome number variation in a promising oilseed woody crop,Plukenetia volubilisL. (Euphorbiaceae)

Cited by 11 publications

References 24 publications

New determinations of somatic chromosome number in cultivated and wild species ofSaccharum

New determinations of somatic chromosome number in cultivated and wild species ofSaccharum

Parental origin and genomic evolution of tetraploidGossypiumspecies by molecular marker and GISH analyses

Molecular genetic diversity and mating system in sacha inchi progenies1

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