Anaesthetic stimulation of Amaranthus albus seed germination: Interaction with phytochrome

1985 ◽  
Vol 65 (4) ◽  
pp. 451-454 ◽  
Author(s):  
Regine Chadoeuf-Hannel ◽  
Ray B. Taylorson
Keyword(s):  
Seed Germination ◽  
Stimulation Of

scholarly journals Swailing affects seed germination of plants of European bio-and agricenosis in a different way

2017 ◽  
Vol 12 (1) ◽  
pp. 62-75 ◽  
Author(s):  
Renata Bączek-Kwinta
Keyword(s):  
Seed Germination ◽  
Agricultural Practice ◽  
Seedling Vigour ◽  
Habitat Composition ◽  
Indirect Impact ◽  
Wild Thyme ◽  
Plant Habitat ◽  
Seed Testa ◽  
Stimulation Of

AbstractSwailing as a part of agricultural practice is an illegal habit in many European countries. The indirect effect of swailing is the emission of volatiles (SGV), hence the aim of the study was to identify their impact to seeds of different species occurring or grown Europe. It was carried out on seeds of 29 species of 10 botanical families within the angiosperms. The response to SGV was more or less differentiated within a family, and even within the species, e.g. in the case of tomato. The stimulation of germination and/or increased seedling vigour was established in celery, green- and red-leafed basil, white and red cabbage, white clover and wild thyme. The same effect was noticed for the seeds of stratified broadleaf plantain and the positively photoblastic seeds of German chamomile germinated in darkness. The inhibition of seed germination and/ or reduced seedling vigour was demonstrated in case of caraway, dill and forget-me-not. Similar results were obtained in the experiments carried outin vitroand in the soil, hence it can be assumed that the indirect impact of SGV on plant habitat composition is likely. The interaction of SGV compounds with seed testa and seed phytohormones is discussed.

Stimulation of seed germination in South African species of Restionaceae by plant-derived smoke

1994 ◽  
Vol 15 (1) ◽  
pp. 93-100 ◽  
Author(s):  
N. A. C. Brown ◽  
H. Jamieson ◽  
P. A. Botha
Keyword(s):  
Seed Germination ◽  
South African ◽  
African Species ◽  
Stimulation Of

Stimulation of Common Cocklebur (Xanthium pensylvanicum) and Redroot Pigweed (Amaranthus retroflexus) Seed Germination by Injections of Ethylene into Soil

Weed Science ◽  
1980 ◽  
Vol 28 (5) ◽  
pp. 510-514 ◽  
Author(s):  
G. H. Egley
Keyword(s):  
Seed Germination ◽  
Laboratory Tests ◽  
Seedling Emergence ◽  
Amaranthus Retroflexus ◽  
Redroot Pigweed ◽  
Plastic Bags ◽  
Viable Seeds ◽  
Chamber Studies ◽  
Growth Chamber Studies ◽  
Stimulation Of

The effects of ethylene upon germination of common cocklebur (Xanthium pensylvanicumWallr.) and redroot pigweed (Amaranthus retroflexusL.) seeds were studied. In laboratory tests with seeds in sealed flasks in the dark, 10 μl/L ethylene increased germination of redroot pigweed seeds from 7% to 52% at 30 C, and increased germination of large and small common cocklebur seeds from 30% and 0% to 100% and 90% respectively, at 25 C. At least 12 h of exposure to ethylene was necessary for appreciable stimulation of germination. In growth chamber studies with known numbers of seeds in pots of soil, ethylene at 11 kg/ha was injected into the soil, and the pots were enclosed in plastic bags for 24 h. One such injection at 2 weeks after planting, and successive injections at 2, 3, and 4 weeks, significantly increased redroot pigweed seedling emergence, and significantly decreased the numbers of dormant, viable seeds remaining in the soil. When pots were not enclosed, injections did not significantly effect redroot pigweed seeds, but significantly increased common cocklebur seedling emergence and decreased the number of viable common cocklebur seeds remaining in the soil.

scholarly journals Stimulation of Lettuce Seed Germination by 6-(Substituted) Purines

1959 ◽  
Vol 34 (1) ◽  
pp. 1-3 ◽  
Author(s):  
Charles G. Skinner ◽  
William Shive
Keyword(s):  
Seed Germination ◽  
Lettuce Seed ◽  
Lettuce Seed Germination ◽  
Stimulation Of

scholarly journals STUDIES ON THE STIMULATION OF CATALPA BIGNONIOIDES WALT. SEED GERMINATION

2021 ◽  
Vol 10 (20) ◽  
pp. 172-178
Author(s):  
Daniela-Sabina Poșta ◽  
Sándor Rózsa ◽  
Tincuța-Marta Gocan
Keyword(s):  
North America ◽  
Seed Germination ◽  
Exotic Species ◽  
Humid Climate ◽  
Methods And Techniques ◽  
Temperate Soils ◽  
Individual Trees ◽  
Stimulation Of ◽  
Compact Shape

Catalpa is a tree with an attractive ornamental value and compact shape. Catalpa bignonioides Walt., is a tree with heights of up to 35 meters and a large trunk. It is an exotic species in North America areal. It grows well in a warm and humid climate, on alluvial, fertile, deep, temperate soils. It has a light temperament, withstands winter frosts well, but is sensitive to late frosts. The degree of germination varies both between species and within them. Within batches of seeds of the same species varies depending on the origin, year of harvest and individual trees. There are different methods and techniques for overcoming drowsiness depending on the seeds. Various pre-treatments are used such as scarification and hot and cold aeration to stimulate the embryo. The paper presents the stimulation of seed germination at catalpa, using different concentrations of Nitragin: 0.1%, 0.3%, 0.5%, 0.7%, 0.9% and following the seed germination interval.

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