The Effect of Light and Auxins on the Regeneration of Lily (Lilium Regale Wil.) Cells by Somatic Embryogenesis and Organogenesis

1999 ◽  
Vol 160 (3) ◽  
pp. 483-490 ◽  
Author(s):  
Veli‐Pekka Pelkonen ◽  
Anneli Kauppi
Keyword(s):  
Somatic Embryogenesis ◽  
Lilium Regale ◽  
Effect Of Light

scholarly journals Different Developmental Stages of Mother Plants Induct Different Morphogenesis Pathways in In Vitro Culture of Fritillaria imperialis and Fritillaria persica

HortScience ◽  
2006 ◽  
Vol 41 (4) ◽  
pp. 984D-985
Author(s):  
Ahmad Khalighi ◽  
Manijeh Mohammadi Dehcheshmeh ◽  
Esmaeil Ebrahimie ◽  
Manoochehr Sardari ◽  
Rohangiz Naderi ◽  
...  
Keyword(s):  
Somatic Embryogenesis ◽  
Developmental Stages ◽  
Cold Treatment ◽  
Ornamental Plants ◽  
Direct Somatic Embryogenesis ◽  
Wild Populations ◽  
Mother Plants ◽  
First Time ◽  
Effect Of Light

Fritillaria imperialis and Fritillaria persica are important medicinal and ornamental plants that are native to Iran. Wild populations of Fritillaria are at risk of extinction. For the first time, capability of developmental stages in respect to induction of different morphogenesis pathways from petal tissue was studied in detail. The developmental stages were green unopened flowers, colored unopened flowers, and open flowers. Direct bulblet regeneration and direct somatic embryogenesis were observed from green unopened flowers in both F. imperialis and F. persica. More bulblet regeneration was produced in F. imperialis in contrast with F. persica in colored unopened flowers. Somatic embryogenesis via callus was established in green unopened flowers of F. persica with cold pretreatment. The effect of light on induction of different morphogenesis pathways was nonsignificant except for green unopened flowers of F. persica with cold treatment. Our results showed that the developmental stages of petal explants play a significant role in micropropagation of Fritillaria and induction of different morphogenesis pathways.

Effect of light quality and culture medium on somatic embryogenesis of Agave tequilana Weber var. Azul

2010 ◽  
Vol 104 (2) ◽  
pp. 271-275 ◽  
Author(s):  
Araceli Rodríguez-Sahagún ◽  
Gustavo Acevedo-Hernández ◽  
José M. Rodríguez-Domínguez ◽  
Benjamín Rodríguez-Garay ◽  
Jesús Cervantes-Martínez ◽  
...  
Keyword(s):  
Somatic Embryogenesis ◽  
Culture Medium ◽  
Light Quality ◽  
Agave Tequilana ◽  
Effect Of Light

Effect of light intensity on the ultrastructure of the filamentous cyanobacterium, Anabaena variabilis

1988 ◽  
Vol 46 ◽  
pp. 300-301
Author(s):  
C. S. Bricker ◽  
S. R. Barnum ◽  
B. Huang ◽  
J. G. Jaworskl
Keyword(s):  
Fatty Acid ◽  
Light Intensity ◽  
Acid Content ◽  
Fatty Acid Content ◽  
Anabaena Variabilis ◽  
Chloroplast Envelope ◽  
Major Constituent ◽  
Filamentous Cyanobacterium ◽  
Photosynthetic Membrane ◽  
Effect Of Light

Cyanobacteria are Gram negative prokaryotes that are capable of oxygenic photosynthesis. Although there are many similarities between eukaryotes and cyanobacteria in electron transfer and phosphorylation during photosynthesis, there are two features of the photosynthetic apparatus in cyanobacteria which distinguishes them from plants. Cyanobacteria contain phycobiliproteins organized in phycobilisomes on the surface of photosynthetic membrane. Another difference is in the organization of the photosynthetic membranes. Instead of stacked thylakolds within a chloroplast envelope membrane, as seen In eukaryotes, IntracytopIasmlc membranes generally are arranged in three to six concentric layers. Environmental factors such as temperature, nutrition and light fluency can significantly affect the physiology and morphology of cells. The effect of light Intensity shifts on the ultrastructure of Internal membrane in Anabaena variabilis grown under controlled environmental conditions was examined. Since a major constituent of cyanobacterial thylakolds are lipids, the fatty acid content also was measured and correlated with uItrastructural changes. The regulation of fatty acid synthesis in cyanobacteria ultimately can be studied if the fatty acid content can be manipulated.

Somatic embryogenesis of Cyclamen persicum in liquid medium

1995 ◽  
Vol 94 (4) ◽  
pp. 605-612 ◽  
Author(s):  
Marc Kreuger ◽  
Erik Postma ◽  
Yvon Brouwer ◽  
Gerrit-Jan van Holst
Keyword(s):  
Somatic Embryogenesis ◽  
Liquid Medium ◽  
Cyclamen Persicum

Effect of light intensity and water aging on surface hardness of dental resin-composites

2019 ◽  
Vol 64 (11) ◽  
pp. 1007-1014
Author(s):  
Tong XU ◽  
◽  
Jia-Hui ZHANG ◽  
Zhao-Ying LIU ◽  
Xuan LI ◽  
...  
Keyword(s):  
Light Intensity ◽  
Surface Hardness ◽  
Resin Composites ◽  
Dental Resin ◽  
Dental Resin Composites ◽  
Effect Of Light
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