Journal
INTERNATIONAL JOURNAL OF PLANT SCIENCES
Volume 164, Issue 6, Pages 855-860Publisher
UNIV CHICAGO PRESS
DOI: 10.1086/378660
Keywords
Sambucus nigra; pollen; pollen germination; TEM; SEM
Categories
Ask authors/readers for more resources
Mature pollen grains of Sambucus nigra L. are tricolporate, isopolar, 12.5 mum wide, 25 mum long, and tricellular. They have a tectate exine, a bilayered nexine, and a thin intine. The vegetative cell has abundant rough endoplasmic reticulum, many well-structured mitochondria, numerous apparently inactive dictyosomes, immature dividing, and starch-filled plastids and lipid bodies. The sperm cells have few and poorly structured organelles. They are linked by cytoplasmic bridges, indicating a persistent physiological unit, and are surrounded by fibrillar polysaccharide material. Freshly released pollen is 95% viable. Three- and 4-year-old pollen grains stored at -20 degreesC are 78.2% and 43% viable, respectively. In vitro germination requirements and pollen tube growth are more similar to those of bicellular pollen than to those of tricellular pollen.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available