Development of Ovule and Seed-Coat of Erythroxylum Coca Lamk.

Boesewinkel, F. D.; Geenen, Jarret

doi:10.1111/j.1438-8677.1980.tb01200.x

Cited by 25 publications

(14 citation statements)

References 6 publications

(4 reference statements)

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“…Bouman ( 1984) mentioned such an endothelium in Polemoniaceae, Plantaginaceae and Linaceae. A very similar type of endothelium is found in Erythroxylaceae (Boesewinkel & Geenen, 1980) and Trigoniaceae (Boesewinkel, 1987). The endothelium also persists in the mature seed in Scrophulariaceae and Solanaceae (Bouman, 1984).…”

Section: Hypostasesupporting

confidence: 52%

Trends in the evolution of dicotyledonous seeds based on character associations, with special reference to pachychalazy and recalcitrance

Teichman¹,

Wyk²

1991

Botanical Journal of the Linnean Society

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Trends in the evolution of dicotyledonous seeds based on character associations, with special reference to pachychalazy and recalcitrance. The possible evolutionary status of the endothelium, hypostase, pachychalaza and the recalcitrant viability behaviour of seeds is considered in relation to bitegmy/unitegmy, crassinucellate/tenuinucellate ovules, nuclear/cellular endosperm development, large/small seed size, woody/herbaceous habit and tropical/temperate habitat. The presenre of the endothelium, hypostase, pachychalaza and recalcitrance in dicotyledonous families is plotted against Dahlgren's system of classification. Results are compared with Sporne's advancement index for the various families. An endothelium is considered derived since it occurs more often in highly evolved superorders and is significantly associated with derived ovule and endosperm character states as well as with smaller seed size. A hypostase appears to be relatively ancestral and is significantly associated with pachychalazy and recalcitrance. The endothelium and hypostase have developed independently in many taxa and could be interpreted as being structurally and functionally analogous. Pachychalazy and recalcitrance are significantly associated with ancestral ovule character states and, at the species level, with large seed size (overgrown seed), woody habit and tropical habitat. The presence of pachychalazy, recalcitrance and associated large seed size are therefore regarded as ancestral character states of the dicotyledons. Consideration of currently accepted dicta on seed character state polarity, suggests a reversal in the evolutionary status of pachychalazy and large seed size.

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Section: Hypostasesupporting

confidence: 52%

Trends in the evolution of dicotyledonous seeds based on character associations, with special reference to pachychalazy and recalcitrance

Teichman¹,

Wyk²

1991

Botanical Journal of the Linnean Society

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“…However, there are deviations in the mangrove Rhizophoraceae, probably because of specialized seed development. Most ovules are weakly crassinucellar (Rhizophoraceae, Karsten, 1891; Cook, 1907; Tobe & Raven, 1987b, 1988b); Erythroxylaceae, Boesewinkel & Geenen, 1980; Linaceae, Dorasami & Gopinath, 1945; Narayana 1964a) or crassinucellar (Rhizophoraceae, Karsten, 1891; Mauritzon, 1939; Nikiticheva & Yakovlev, 1985; Erythroxylaceae, Mauritzon, 1934; Narayana, 1960, 1964b, 1970a; Rao, 1968; Mametyeva, 1985; Ctenolophonaceae, this study; Linaceae, Narayana, 1964a; Irvingia (this study); Caryocaraceae (seemingly crassinucellar), Dickison, 1990). Only in a few Rhizophoraceae ( Gynotroches, Pellacalyx ; Juncosa & Tobe, 1988) and some Linaceae ( Linum, Reinwardtia, Radiola, Anisadenia ) are the ovules incompletely tenuinucellar (this study, Mauritzon, 1934; Narayana, 1970b; Boesewinkel, 1980).…”

Section: Discussionmentioning

confidence: 99%

Comparative floral structure and systematics in Rhizophoraceae, Erythroxylaceae and the potentially related Ctenolophonaceae, Linaceae, Irvingiaceae and Caryocaraceae (Malpighiales)

Matthews

Endress

2011

Botanical Journal of the Linnean Society

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Within the rosid order Malpighiales, Rhizophoraceae and Erythroxylaceae (1) are strongly supported as sisters in molecular phylogenetic studies and possibly form a clade with either Ctenolophonaceae (2) or with Linaceae, Irvingiaceae and Caryocaraceae (less well supported) (3). In order to assess the validity of these relationships from a floral structural point of view, these families are comparatively studied for the first time in terms of their floral morphology, anatomy and histology. Overall floral structure reflects the molecular results quite well and Rhizophoraceae and Erythroxylaceae are well supported as closely related. Ctenolophonaceae share some unusual floral features (potential synapomorphies) with Rhizophoraceae and Erythroxylaceae. In contrast, Linaceae, Irvingiaceae and Caryocaraceae are not clearly supported as a clade, or as closely related to Rhizophoraceae and Erythroxylaceae, as their shared features are probably mainly symplesiomorphies at the level of Malpighiales or a (still undefined) larger subclade of Malpighales, rather than synapomorphies. Rhizophoraceae and Erythroxylaceae share (among other features) conduplicate petals enwrapping stamens in bud, antepetalous stamens longer than antesepalous ones, a nectariferous androecial tube with attachment of the two stamen whorls at different positions: one whorl on the rim, the other below the rim of the tube, the ovary shortly and abruptly dorsally bulged and the presence of a layer of idioblasts (laticifers?) in the sepals and ovaries. Ctenolophonaceae share with Rhizophoraceae and/or Erythroxylaceae (among other features) sepals with less than three vascular traces, a short androgynophore, an ovary septum thin and severed or completely disintegrating during development, leading to a developmentally secondarily unilocular ovary, a zigzag-shaped micropyle and seeds with an aril.

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“…Morphological data-We expanded the genus-level morphological data sets of Juncosa and Tomlinson (1988a), Keating and Randrianasolo (1988), and Tobe and Raven (1988b) to all species in the molecular study (Appendix 3) and added the outgroups Erythroxylaceae (Schulz, 1907;Badre, 1973a, b;Boesewinkel and Geenen, 1980;Verdcourt, 1980;Weberling, Lorcher, and Bohnke, 1980;Rury, 1981;Behnke, 1988) and Drypetes (Levin, 1986;Kapil and Bhatnagar, 1994;Dunlop, Leach, and Cowie, 1995;Tokuoka and Tobe, 1999). Additionally, some characters from published studies were recoded.…”

Section: Methodsmentioning

confidence: 99%

Systematic affinities of Rhizophoraceae and Anisophylleaceae, and intergeneric relationships within Rhizophoraceae, based on chloroplast DNA, nuclear ribosomal DNA, and morphology

Schwarzbach

Ricklefs

2000

American J of Botany

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A cladistic analysis of sequences from the chloroplast gene rbcL was used to determine the systematic affinities of Rhizophoraceae and Anisophylleaceae. This analysis rejects close relationships of Rhizophoraceae with Celastraceae or Elaeocarpaceae, suggested previously, and identifies Erythroxylaceae as sister group within the Malpighiales, supported by several morphological and anatomical characters. Our molecular results also indicate that Anisophylleaceae are nested within Cucurbitales. Although this placement is novel, this affinity is also well supported by shared morphological characters. Tribal and generic relationships within Rhizophoraceae are evaluated with a combination of six molecular data sets (rbcL, atpB-rbcL intergenic spacer, trnL-trnF intergenic spacer, ITS1, ITS2, and 5.8S) and a morphological data set. These relationships are compared with results from previous morphological cladistic analyses. Against the background of the molecular results, we briefly discuss the evolution of morphological characters traditionally used for tribal subdivision as well as characters presumably significant for adaptation to mangrove habitats, namely, aerial stilt roots and vivipary.

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Development of Ovule and Seed-Coat of Erythroxylum Coca Lamk.

Cited by 25 publications

References 6 publications

Trends in the evolution of dicotyledonous seeds based on character associations, with special reference to pachychalazy and recalcitrance

Trends in the evolution of dicotyledonous seeds based on character associations, with special reference to pachychalazy and recalcitrance

Comparative floral structure and systematics in Rhizophoraceae, Erythroxylaceae and the potentially related Ctenolophonaceae, Linaceae, Irvingiaceae and Caryocaraceae (Malpighiales)

Systematic affinities of Rhizophoraceae and Anisophylleaceae, and intergeneric relationships within Rhizophoraceae, based on chloroplast DNA, nuclear ribosomal DNA, and morphology

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