Topic
Chorispora
About: Chorispora is a research topic. Over the lifetime, 7 publications have been published within this topic receiving 26 citations.
Papers
TL;DR: The presence of the indehiscent pericarp allows Chorispora, Goldbachia, and Sterigmostemum to form a persistent seed bank but not Spirorrhynchus and Tauscheria.
Abstract: The dispersal and germination unit of some Brassicaceae species is the fruit, and we hypothesized that it could affect germination phenology and promote formation of a soil seed bank. We determined the effects of the indehiscent pericarp on germination and longevity of buried seeds of five Brassicaceae species native to cold deserts of central Asia. Germination phenology (seedling emergence) was monitored for intact dispersal units and isolated seeds of Chorispora sibirica, Goldbachia laevigata, Spirorrhynchus sabulosus, Tauscheria lasiocarpa (annuals), and Sterigmostemum fuhaiense (perennial) at natural temperatures in watered and non-watered (natural precipitation) soil. Intact dispersal units and isolated seeds were buried under natural conditions and exhumed at regular intervals for 35 months to monitor germination, viability and moisture content of isolated seeds, seeds in dispersal units, and seeds removed from dispersal units after burial. Isolated seeds of Goldbachia, Spirorrhynchus, and Tauscheria germinated only the first autumn and those of Chorispora and Sterigmostemum the first autumn and first spring, with higher germination percentages in all species in watered than in non-watered soil. A high percentage of seeds in buried dispersal units of Chorispora, Goldbachia, and Sterigmostemum was viable after 35 months, and seeds exhibited a 6-month dormancy cycle, being non-dormant only in autumn and spring. Seeds in buried dispersal units of Spirorrhynchus and Tauscheria germinated when exhumed in the first spring, but all non-germinated seeds were dead after 1 year. Thus, the presence of the pericarp allows Chorispora, Goldbachia, and Sterigmostemum to form a persistent seed bank but not Spirorrhynchus and Tauscheria.
19 citations
TL;DR: Among the studied characters, fruit, seed size and colour, seed shape, fruit trichome structure and pollen size were of taxonomic importance and useful in separating taxa.
Abstract: Detailed description of fruit, seed and pollen macro- and micromorphological characters of Turkish Chorispora species are provided with illustrations. Typical fruits are linear, straight or strongly curved upward. Nonglandular and glandular trichomes are present or absent. Seeds varied in shape from oblong, oblong-broadly elliptic to subglobose and winged at the apex and base or not. The pollen grains are tricolpate and the basic shape of the pollen grains in species studied is perprolate. The surface sculpturing type is reticulate. Among the studied characters, fruit, seed size and colour, seed shape, fruit trichome structure and pollen size were of taxonomic importance and useful in separating taxa.
8 citations
TL;DR: Six taxa of the central Asian Cruciferae are dealt with, of which five are based on Chinese and one on Mongolian material, which is rather complicated because they arebased on scarce, incomplete, or single gatherings often dispersed in small and sometimes hardly accessible herbaria.
Abstract: Six taxa of the central Asian Cruciferae: Chorispora tianschanica Z. X. An, Draba denserosulata Pobed., Erysimum brevifolium Z. X. An, Malcolmia humilis Z. X. An, Solms-laubachia pamirica Z. X. An, and Yinshania albiflora Ma & Y. Z. Zhao var. gobica Z. X. An, are reduced to synonymy of Parrya beketovii Krassn., Draba lanceolata Royle, Erysimum cheiranthoides L. subsp. transiliense (M. Pop.) D. German, Strigosella brevipes (Bunge) Botschantzew, Chorispora macropoda Trautv. and Smelowskia micrantha (Botschantzew & Vved.) Al-Shehbaz & S. I. Warwick, respectively. The taxonomy and nomenclature of some central Asian Cruciferae (Brassicaceae) is rather complicated because they are based on scarce, incomplete, or single gatherings often dispersed in small and sometimes hardly accessible herbaria. This problem was partially resolved during the preparation of the Flora of China (Zhou et al. 2001), though some recently described taxa remained unaddressed. The present paper deals with six names, of which five are based on Chinese and one on Mongolian material. The status of Erysimum brevifolium Z. X. An and Malcolmia humilis Z. X. An was briefly discussed by German (2007) in an obscure publication, where no taxonomic adjustments were made. Therefore, these taxa are included here as well.
7 citations
30 Jun 2015
TL;DR: The type status of 146 names of Himalayan taxa is discussed, of which the lectotypes of 133 names are designated here for the first time, including a few that were incompletely lectotypified due to the existence of more than one sheet in the institution where the type was said to be.
Abstract: . The type status of 146 names of Himalayan taxa is discussed, of which the lectotypes of 133 names are designated here for the first time, including a few that were incompletely lectotypified due to the existence of more than one sheet in the institution where the type was said to be. These 133 species and infraspecfic names were originally described in the genera Arabis (15), Chorispora (4), Cochlearia (4), Dilophia (2), Draba (64), Ermania (2), Erysimum (5), Eutrema (4), Nasturtium (3), Sisymbrium (9), and Thlaspi (2). In addition, lectotypes are designated for one name each in the 15 other genera: Barbarea, Brassica, Capsella, Cardamine, Cheiranthus, Dipoma, Goldbachia, Hemilophia, Hutchinsia, Lepidostemon, Martinella, Megacarpaea, Microsisymbrium, Sinapis, and Sophiopsis. The type status of 13 additional names in Arabis (1), Buchingera (1), Draba (8), Erysimum (2), Parlatoria (1), Parrya (2), Sisymbrium (1), and Torularia (1) are discussed.
3 citations
TL;DR: Chorispora tashkorganica, a narrow endemic to western Xinjiang, China, is described and illustrated and appears to be one of the two described by Pachomova (1974) from central Asia, but on the basis of the de- tailed original descriptions she gave, it appears that Chorispora pamirica PACHomova and C. insignis Pachamova are synonyms of C. tashKorganica.
Abstract: Chorispora tashkorganica, a narrow endemic to western Xinjiang, China, is described and illustrated. Its relationships and distinguishing characters are discussed. During work on the genus Chorispora R. Brown for the forthcoming volume eight of the Flora of China, we examined all of the recognized species except the two described by Pachomova (1974) from central Asia. However, on the basis of the de- tailed original descriptions she gave, it appears that Chorispora pamirica Pachomova and C. insignis Pachomova are synonyms of C. songarica Schrenk and C. sibirica (L.) DC., respectively. Among the extensive Chinese material we examined, two col- lections clearly belong to an undescribed species, hereafter known as C. tashkorganica. Regardless of the ultimate placement of Pachomova's two taxa, they are quite different from the new species in having obovate petals 10-12 mm long, compared to the much shorter (3-4 mm long) oblanceolate petals of C. tashkorganica. As presently delimited, Chorispora consists of 11 species centered primarily in central and south- western Asia, with the range of one weedy species, C. tenella (Pallas) DC., extending throughout Eu- rope and introduced elsewhere in the world. The 11 species of Chorispora are easily separated by
2 citations
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2018 | 1 |
| 2017 | 2 |
| 2015 | 1 |
| 2012 | 1 |
| 2008 | 1 |
| 2000 | 1 |