The study reports an efficient in vitro micropropagation of Red squill (Urginea maritima (L.) Baker), an important medicinal plant of Mediterranean region, from single and double scale explants. The explants were cultured on MS medium containing different concentrations of Thidiazuron with initial culturing in darkfor eight weeks followed by transfer to 16 h light photoperiod or culturing them in 16 h light photoperiod only. The results showed that initial growth of explants in dark for eight weeks was inhibitory and produced negligibly low number of bulbs on both explants. Contrarily, 16 h light photoperiod resulted in varying frequency of bulblet regeneration on single and double scale explants. Double scale explants were more potent for bulblet regeneration compared to single scale explants. Single scales produced only axillary bulblets with a frequency of 0.90–1.33 bulblets per expalnt. Contrarily, both adventitious and axillary bulblets were recorded on double scales. These explants produced ...

In vItro RegeneRatIon of Red SquIll UrgInea marItIma (l.) BaKeR. uSIng thIdIazuRon

Vegetation rings are a common pattern in water-limited environments and mostly occur in clonal plants. This study presents, for the first time, rings of the geophyte species Urginea maritima. The rings, typically 40–90 cm in diameter, are abundant in the sandy environment of Little Petra and Wadi Rum, in the southern Jordanian drylands. Soil properties were studied in the rings’ center, periphery, and matrix. Soil-water volumetric content was significantly higher in the rings’ periphery than in the center and matrix. The soil organic carbon was highest in the periphery, intermediate in the center, and lowest in the matrix. At the same time, the soil texture, hydraulic conductivity, and gravimetric moisture content at the hygroscopic level were similar in the three microenvironments. According to the results, a possible ring formation mechanism is the soil-water uptake mechanism, which results in competition between the plants at the periphery and those in the center and is generally attributed to plants with large lateral root zones. Numerical simulations of a mathematical model implemented in this study support the soil-water uptake mechanism. A second possible mechanism is negative plant-soil feedback due to the accumulation of dead biomass and its consequent decomposition, with the resultant release of autotoxic compounds. It is possible that several mechanisms occur simultaneously and synergistically affect the formation of U. maritima rings.

https://www.mdpi.com/2073-445X/11/2/285/pdf?version=1644975119

A First Study of Urginea maritima Rings: A Case Study from Southern Jordan

The morphology, anatomy, and ultrastructure of the floral nectary of Urginea maritima (L) Baker were investigated at three stages of nectary development The plant possesses a typical gynopleural (septal) nectary with secondary presentation The nectary consists of one layer of epithelium secretory cells and one to four layers of subsidiary cells subtended by two to six layers of parenchyma (subnectary) cells The nectary releases the nectar at a point two-thirds towards the summit of the ovary by means of carpellary sutures Nectar secretion appears to depend largely on the hydrolysis of starch grains stored in amyloplasts at the intermediate stage The hydrolysis process most likely commences in the epithelium layer followed by the subsidiary tissue and then the parenchyma cells of the ovary wall A symplastic transfer of the secreted nectar occurs by plasmodesmata connecting the subsidiary cells to the parenchyma and the epithelial secretory cells However, microchannels in the cell wall of the epithe

Nectary structure and nectar presentation in the Mediterranean geophyte, Urginea maritima (Hyacinthaceae)

The growth pattern of the flowering shoot of urginea maritima l. (liliaceae)

Handle everyday research tasks with reliable, citation-backed results

Your personal Research Agent to handle research tasks with citation-backed results

Popular Tasks used by Researchers

How can I help with your research?

Meet SciSpace

Get more enhanced response by uploading the PDFs you want me to reference.

No relevant PDFs in your library

SciSpace is the AI research assistant for academics. Run systematic literature reviews on 280M+ papers, and write papers with cited sources. Trusted by 1M+ students, PhDs & researchers.

SciSpace | AI for Research

Analyze PDFs

Code & Manuscripts

Funding & Grants

Literature & Patents

Medical & Clinical Data

Systematic Review

Visualize & Present

Web & Data

Build a Google Scholar-like website for your research.

Build a website

Create charts and images for your research

Create a Chart

Write a paper for submission to a journal

Draft a manuscript

Patent Search

Design eye-catching scientific posters in minutes.

Scientific Poster Generation

Systematic Literature Review

One task is running at the moment. Your messages will be shown right after.

Drag and drop or click here to browse

Loved by <highlight>1 million+</highlight> researchers

Extract a list of specific topics and their sources from unstructured text

Topics

Compare and analyze relevant papers that matches with your search

Papers

Get insights from PDFs and bookmarked papers from your library

My library

Recent searches

Try searching for:

Catch AI-generated content in scholarly and non-scholarly content

{ai} Detector

Ai Writer

Get PDF Summaries, highlighted text explanations 

Chat with PDF

Effortlessly create in-text citations and bibliographies in APA and 2,500 other formats

Citation generator

Get explanations, summaries, and answers on academic papers

Ease up your research workflow with {scispace}'s cohort of exciting AI tools

Elevate your academic writing skills and convey your ideas the way you want

Paraphraser

Explore our range of reading and writing tools

Your file is being prepared and should be ready in a few minutes. If it's a large file, it might take a bit longer. You can close this window, and we'll email you the file when it's done.

You have reached a maximum limit of <strong>{limit}</strong> columns in the table. Remove at least <strong>1</strong> column to add or create another one.

H. Tzanni

Author Tools

Chat about Author

Papers

The growth pattern of the flowering shoot of urginea maritima l. (liliaceae)