Interspecific and Intervarietal Hybridization in Sansevieria

Pate, James B.; Joyner, J. F.; Gangstad, Edward O.

doi:10.1093/oxfordjournals.jhered.a106443

Cited by 8 publications

(5 citation statements)

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“…Menzel and Pate (1960) obtained fertile bybrids in interspecific crosses involving diploid species and also between diploid and tetraploid species. Interspecific hy bridisation has also been reported by various workers like Pate et al (1954Pate et al ( , 1960, Wilson et al (1962), etc. Crossability of different species indicates their close cyto genetic relationship.…”

Section: Discussionsupporting

confidence: 67%

Cytology of some species of Sansevieria thunb.

Nazeer

Khoshoo

1984

CYTOLOGIA

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Section: Discussionsupporting

confidence: 67%

Cytology of some species of Sansevieria thunb.

Nazeer

Khoshoo

1984

CYTOLOGIA

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“…The short phylogenetic distance between Sansevieria species and the easy occurrence of (artificial) hybridization (Pate et al, 1954; Menzel and Pate, 1960), invoke doubt about whether or not gene flow still occurs between some of the described species. For example, Pfennig (1979) suggested that D. powellii may be a natural hybrid of D. perrotii and D. arborescens (Cornu ex Gérôme & Labroy) Byng & Christenh., as it arose in regions where the two species are sympatric.…”

Section: Discussionmentioning

confidence: 99%

“…The short phylogenetic distance between Sansevieria species and the easy occurrence of (artificial) hybridization (Pate et al, 1954;Menzel and Pate, 1960), invoke doubt about whether or not gene flow still occurs between some of the described species. For example, Pfennig (1979) The reproductive ecology of sansevierias is poorly studied; we only know that they flower at night emitting a strong pleasant scent, attracting insects (possibly hawkmoths) for pollination (Tanowitz and Koehler, 1986).…”

Section: Further Notes On Classification Ecology and Morphologymentioning

confidence: 99%

“…Studies on seed dispersal have not been conducted but are important to assess the geographic range in which species can reproduce. Although there is hardly any research on hybridization in the wild, fertile hybrids are easily formed in experimental settings (Pate et al, 1954;Menzel and Pate, 1960) and differ greatly in morphology. Consequently, it is likely that speciation by hybridization may occur regularly in Sansevieria.…”

Section: Further Notes On Classification Ecology and Morphologymentioning

confidence: 99%

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Plastid phylogenomics of theSansevieriaclade (Dracaena; Asparagaceae) resolves a rapid evolutionary radiation

Kleinwee

Larridon

Shah

et al. 2021

Preprint

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Sansevierias are a diverse group of flowering plants native to Africa, Madagascar, the Arabian Peninsula and the Indian subcontinent, popular outside their native range as low maintenance houseplants. Traditionally recognized as a distinct genus, Sansevieria was recently merged with the larger genus Dracaena based on molecular phylogenetic data. Within the Sansevieria clade, taxonomic uncertainties remain despite numerous attempts to classify the species. We aim to arrive at a robust phylogeny using a plastid phylogenomic approach, and estimate a time-frame of diversification to infer the evolutionary history of the group, including geographical and morphological evolution. Molecular data was obtained using genome skimming for 50 Sansevieria, representing all informal groups previously instated based on morphology, and two Dracaena sensu stricto species. The resulting Maximum Likelihood phylogenetic hypotheses are generally well supported, except for some very short branches along the backbone of the tree. The time-calibrated phylogeny indicates a recent rapid radiation with the main clades emerging in the Pliocene. Two well-supported clades align with previously defined informal groups, i.e., Sansevieria section Dracomima, characterised by the Dracomima-type inflorescence, and the Zeylanica group, native to the Indian subcontinent. Other morphologically defined informal groups are shown to be polyphyletic: a pattern due to convergent evolution of the identifying characters. Cylindrical leaves arose multiple times independently in the evolution of the Sansevieria clade and similarly, the Cephalantha-type inflorescence has originated multiple times from an ancestor with a Sansevieria-type inflorescence. To provide a more accessible tool for species identification and delimitation, genes and spacer regions were screened for variability and phylogenetic informativeness to investigate their potential as chloroplast DNA barcodes. Candidate chloroplast DNA barcodes include the trnH-rpl12, ndhH-rps15, psbE-petL, psbT-psbN, rps18-rpl20 intergenic spacers, the chloroplast gene rps8 and the first intron of ycf3.

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“…Intervarietal crosses are also reported in Sansevieria trifasciata var. laurentii (Pate et al 1954) and Lolium perenne (Foster 1971) among others for breeding efficiency.…”

Section: Raising Of F 1 Hybridsmentioning

confidence: 99%

Cytogenetical Study of Intervarietal Hybrids of Sesame (<i>Sesamum indicum</i> L., Pedaliaceae) Raised by Open Pollination

et al. 2018

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Twenty inter hybrids (IVHs) were raised in crossing among three sesame cultivars Sesamum indicum L. cv. Tilottama, Roma and Savitri following inter planting. Frequency of plants with crossed pods ranges from 0.00 to 5.00% among the lines. Percentage of crossed pods per plant varies 1.59 to 3.84% in Roma Tilottama (RT) hybrids, 2.36 to 3.13% in Savitri Roma (SR) and 2.17 to 5.56% in Savitri Tilottama (ST). IVHs are screened at F 1 based on seed coat color. Meiotic configurations assessed in parents and in F 1 hybrids reveal high frequency of regular homologous pairing with 13 II (Tilottama: 99.35%, Roma: 97.50%, Savitri: 97.37%; RT hybrids: 87.44% average, SR hybrid: 84.08% and ST: 89.29%) at metaphase I (MI) with near equal (13/13), anaphase I (AI) and relatively high pollen grain fertility. F 2 segregation of selfed F 1 progenies demonstrates intermediate dominance (1 : 2 : 1) of seed coat color of the studied sesame varieties. Based on seed yield/ plant and fatty oil content, few promising IVHs are screened.

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Interspecific and Intervarietal Hybridization in Sansevieria

Cited by 8 publications

References 0 publications

Cytology of some species of Sansevieria thunb.

Cytology of some species of Sansevieria thunb.

Plastid phylogenomics of theSansevieriaclade (Dracaena; Asparagaceae) resolves a rapid evolutionary radiation

Cytogenetical Study of Intervarietal Hybrids of Sesame (<i>Sesamum indicum</i> L., Pedaliaceae) Raised by Open Pollination

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