Results 111 to 120 of about 335 (142)

DISTYLY IN OREOCARYA CRASSIPES (BORAGINACEAE), AN ENDANGERED PLANT SPECIES

The Southwestern Naturalist, 2021
Oreocarya crassipes, an endangered angiosperm native to the Trans-Pecos region in southern Brewster County, Texas, exhibits distyly, a breeding system that includes two floral morphs with reciprocal positioning of the anthers and stigmas. The long-style (LS) morph has stigmas above the anthers, and the short-style (SS) morph produces anthers above the ...
James I. Cohen, Hevony Rodriguez, Holly Hutcheson   +2 more
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FLORAL VARIATION AND DISTYLY IN GUETTARDA SCABRA (RUBIACEAE)

American Journal of Botany, 1993
Controversy exists as to whether the tropical shrub Guettarda scabra (Rubiaceae) is distylous. Variations in stigma and anther position and floral morphology of G. scabra were studied in a population in south Florida. Stigma and anther height have unimodal distributions, but stigma‐anther separation is bimodally distributed and can be used to identify ...
Jennifer H. Richards, Suzanne Koptur
openaire   +1 more source

Distyly in Polygonum jucundum Meisn. (Polygonaceae)

Plant Systematics and Evolution, 2010
Distyly has been clearly confirmed in Polygonum jucundum Meisn. The distylous species is dimorphic for tepals, styles, stigmas, and pollen size and number. Long (L)-morph flowers are slightly larger than short (S)-morph flowers. The stigma width of thrum flowers is larger than that of pin flowers, and pin stigmas have longer and fewer papillae than the
Ming-Lin Chen, Xiao-Ping Zhang
exaly   +2 more sources

Arytera distylis

2019
Taxonomic treatment for Arytera ...
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Distyly in Neanotis indica (DC.) W.H. Lewis (Rubiaceae)

Ls- International Journal Of Life Sciences, 2021
AbstractDistyly in Neanotis indica (DC.) W.H. Lewis. (Rubiaceae) a distyous species with Pin eyed flowers (long style and inserted stamens in the corolla tube) and thrum eyed flowers with (exerted anthers and inserted style) accompanied by self-incompatibility in both floral forms but cross-compatibility is described for the first time.
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Distyly in Linum pubescens and L. mucronatum

Botanical Journal of the Linnean Society, 1973
In Linum pubescens Banks & Solander and L. mucronatum Bertol. two floral morphs occur, differing in style length, stamen length, size of stigmatic papillae and, in L. mucronatum, exine sculpture of pollen grains. In both species artificial self- and intramorph cross-pollinations were incom, patible.
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Breakdown of distyly in a tetraploid variety of Ophiorrhiza japonica (Rubiaceae) and its phylogenetic analysis

Journal of Plant Research, 2007
We examined the floral morph of tetraploid Ophiorrhiza japonica Blume var. amamiana Hatus. and diploid O. japonica var. japonica to elucidate the association of distyly and ploidy levels. Chloroplast DNA phylogeny was reconstructed to determine the number of tetraploidization events and floral morph shifts in O. japonica. All individuals of O. japonica
Masatsugu Yokota, Tetsuo Denda, Denda Tetsuo   +2 more
exaly   +3 more sources

Cryptic self‐incompatibility and distyly in Hedyotis acutangula Champ. (Rubiaceae)

Plant Biology, 2010
AbstractDistyly, floral polymorphism frequently associated with reciprocal herkogamy, self‐ and intramorph incompatibility and secondary dimorphism, constitutes an important sexual system in the Rubiaceae. Here we report an unusual kind of distyly associated with self‐ and/or intramorph compatibility in a perennial herb, Hedyotis acutangula.
X, Wu, A, Li, D, Zhang
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Dispersal Patterns and the Evolution of Distyly in Oxalis alpina

Systematic Botany, 1978
Individuals from distylous and ti-istylous populations of Oxalis clpiina (Rose) Knuth (section Ionoxalis) from southeastern Arizona were crossed and the fitness of the resultant F1 hybrids analyzed to provide estimates of genetic divergence among populations. Crossability was highest when tristylous individuals were used as seed parents. Ci-osses among
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Distyly and pollen dimorphism inLinum suffruticosum (Linaceae)

Plant Systematics and Evolution, 1979
The Mediterranean distylousLinum suffruticosum has dimorphic pollen. That from short-styled plants has sub-monomorphic surface excrescences with minute papillae; that from long-styled plants has strongly dimorphic excrescences with conspicuous papillae. The differences are much like those described in species of other sections of the genus.
openaire   +1 more source