tailieunhanh - Seed morphology and seed coat sculpturing of Epilobium L. species (Onagraceae Juss.) from Iran

The seeds of 32 specimens belonging to 15 species from 2 sections of the genus Epilobium L. (Onagraceae Juss.) were studied by both a light and scanning electron microscope (SEM). Seed morphology of the examined specimens exhibits some variation in shape and size. Seed size ranges between mm and mm in length. | Turk J Bot 30 (2006) 435-440 © TÜB‹TAK Research Article Seed Morphology and Seed Coat Sculpturing of Epilobium L. Species (Onagraceae Juss.) from Iran Reza Sheikh AKBARI, Dina AZIZIAN* Department of Biology, Faculty of Science, Shahid Beheshti University, Evin, Tehran - IRAN Received: Accepted: Abstract: The seeds of 32 specimens belonging to 15 species from 2 sections of the genus Epilobium L. (Onagraceae Juss.) were studied by both a light and scanning electron microscope (SEM). Seed morphology of the examined specimens exhibits some variation in shape and size. Seed size ranges between mm and mm in length. They are ovate, oblong-ovate, and narrowly ovate (ovate-attenuate). The results of SEM investigation of seed coat sculpturing also revealed 5 distinct types of surface structure of the seeds, which are mainly correlated to external morphology of the species. Key Words: Epilobium, Onagraceae, Seed coat, Seed morphology, SEM Introduction Materials and Methods The genus Epilobium L. is one of the largest genera in the family Onagraceae Juss., with about 185 species throughout the world (Raven, 1976) and 18 species in Iran. The genus contains 2 sections in the Flora Iranica area: Chamaenerion Tausch and Epilobium (Raven, 1964). The species of Epilobium are fairly uniform in external appearance and the genus is a taxonomically difficult group. In addition to vegetative and reproductive characteristics, the features of the seeds have long been employed as an important taxonomic feature within the genus, but most light microscopic examinations are concerned with general shape and size rather than details of surface ornamentation, as was Haussknecht (1884) in his comprehensive monograph of the genus made in an attempt to utilise seed morphology for diagnostic purposes. In recent years, various but limited studies on seed morphology have utilised scanning electron microscopy (SEM) (Berggren, 1974; Skvortsov & Rusanovitch, 1974; .

• Nông nghiệp
• Seed coat
• Seed morphology
• Epilobium L
• species
• Scanning electron microscope
• Seed morphology
• Agricultural science
• Seed coat anatomy
• Apocynaceae and asclepiadaceae
• Seed coat permeability
• Seed longevity
• Cultivated species of soybean
• Cultivated species
• Seed coat permeability studies in wild
• Amla fruit extract
• Seed COAT extract
• Meat patties
• Amla (Emblica officinalis) fruit
• Seed coat powder incorporated
• Groundnut seed coat
• GC MS analysis
• Chemical components
• Groundnut seed coat by GC MS
• Chloroform crude extracts
• Various chemical compounds
• Sweet corn
• Polymer coat
• Seed quality
• Quality traits in sweet corn
• Vigour index
• Seed treatment
• Field performance
• Field performance of chickpea
• Seed treatment chemicals
• BMC Genomics
• Minute hilum
• Ethylene forming enzyme
• Seed development
• Defective seed coat
• Expression profiling
• Journal of Botany
• Histological techniques
• Nuclear endosperm
• Zygophyllum fabago (Zygophyllaceae)
• Microscopic techniques
• Seed coat cells
• Cluster analysis
• Scanning electron microscopy
• Subgeneric classification
• Micromorphological characters
• Plantaginaceae sensu lato
• Taxa of Plantago L
• Genera Antirrhinum L
• Digitalis L
• Linaria Mill
• Pinto bean
• Postharvest seed coat darkening
• Regular darkening
• CDC Pintium
• Pollen grain sculpture
• Seed coat characters of 11 taxa of genus Hibiscus
• Pollen grains morphology
• BMC Plant Biology
• QTL mapping
• Seed traits
• Seed size
• Seed coat color
• Single nucleotide polymorphism
• Seed tannin
• Tamarind kernel powder
• Tamarind seed
• Tamarind kernel powder yield
• Plant Biology
• Seedling establishment
• Survive drying
• Regulatory networks controlling acquisition
• Vicia sativa
• Hard seeded
• Soft seeded varieties
• Morphological features
• Thin walled parenchyma cells
• Seed coat microsculpturing
• Lepidium L
• Light microscope
• Reticulate areolate
• Reticulate fovate
• Silene L
• Seed micro and macromorphology
• Brassica napus
• Flavonoid biosynthesis
• Fatty acid
• Gene expression
• Food processing
• Mango peel
• Mango seed kernel
• Proximate chemical composition
• Arabinogalactan proteins
• Glucuronic acid
• Root hairs
• Seed coat mucilage
• Seed germination
• Nghiên cứu Tamarind
• Nghiên cứuTamarindus indica
• Extracts antibacterial activity
• Nghiên cứu hóa học
• Báo cáo hóa học
• Genus Lotus L
• Seed coat sculpturing
• Periclinal cell
• Lotus arenarius Brot
• Asperula anatolica
• Limestone bedrock
• Pollen grains
• Seed coat surface