The Influence of Red and Infrared Light on the Respiration of Photoblastic Seeds

Evenari, M.; Neumann, G; Klein, Shoshana

doi:10.1111/j.1399-3054.1955.tb08957.x

Cited by 26 publications

(4 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Those seeds which have completed this reaction would escape from the inhibitory effect of the nitrogen atmosphere, but those which have not would be inhibited. Observations of many workers that the rate of oxygen uptake by photosensitive seeds is promoted by photoinduction of germination (13,19,30,33,34,35) would also support the second proposal.…”

Section: Ikuma and Thimann-germination Processes Of Lettuce Seedmentioning

confidence: 72%

Analysis of Germination Processes of Lettuce Seed by Means of Temperature and Anaerobiosis

Ikuma¹,

Thimann²

1964

Plant Physiol.

View full text Add to dashboard Cite

Although the seed of Grand Rapids lettuce has long been regarded as classical material for the study of photocontrolled germination (5,6,14,15), our knowledge of the nature and mechanism of its germination is scanty (cf 11, 12, 32, 36). This condition is partly due to the complex nature of the processes, but is also in part due to the difficulty of separating the germination of the seed from the growtth of the embryo (22,27). After the seed has been moistened with water, its photosensitivity increases sharply at first, reaches a maximum, then gradually decreases (6,24,26 In a preliminary series of experiments it was found that germination did not take place under complete anaerobiosis, either in light or in darkness, but it did occur when the seeds were returned to air. Furthermore, the extent to which red light promotecd germination depended upon the duration of the aniaerobiosis beyond photoinduction. These studies suggested that the application of anl anaerobic atmosphere would be a promising tool for the study of oxidative reactions during germiniation. The following experiments were, therefore, carried out to analyze each of the germination processes by temporarily applying a N2 atmosphere and also a range

show abstract

Section: Ikuma and Thimann-germination Processes Of Lettuce Seedmentioning

confidence: 72%

Analysis of Germination Processes of Lettuce Seed by Means of Temperature and Anaerobiosis

Ikuma¹,

Thimann²

1964

Plant Physiol.

View full text Add to dashboard Cite

show abstract

“…Light could also cause changes in the permeability of the seed coat to oxygen or cause an increase in the oxygen requirement of the embryo. It has been shown with lettuce, for example, that visible radiations have a definite effect on respiration during germination (Evenari, Neumann, and Klein, 1955).…”

mentioning

confidence: 99%

On the Mechanisms of Light‐induced Germination Inhibition of Phacelia Tanacetifollv

Schulz

Klein

1965

American J of Botany

View full text Add to dashboard Cite

Germination of seed of Phacelia tanacetifolia is inhibited by several mechanisms. In addition to physical restraints imposed by the seed coats, the seed contains a water-soluble inhibitor which is independent of light or temperature for its activity. Available evidence also points to the presence of 1 or more light-activated inhibitors which are not easily leached from the seed. The blue-light-activated inhibition can be negated by high oxygen tensions or mechanical abrasion of the micropylar end of the seed. The suppression of germination by far-red or red light can be negated by abrasion but is only partially reversed by oxygen. Combinations of abrasion and high oxygen tensions negate both light-induced and temperature-induced inhibitions of germination.

show abstract

“…Seed dormancy may be imposed by mechanisms that require particular light conditions in order to be counteracted. This phenomenon has been referred to as positive photoblastism (Evenari et al, 1955) and is common among small seeded species such as Amananthus retroflexus, Chenopodium album, and many other annual weeds (Taylorson, 1982;Holzner et al, 1982;Grime, 1982;Smith and Morgan, 1983;Gutterman, 1985).…”

Section: Light Requirementmentioning

confidence: 99%

“…Such an effect, that was termed photoblastism by Evenari et al (1955), can be classified as positive or negative depending on the stimulatory or inhibitory effect of white light seed germination, both responses are regarded as two facets of a single phenomenon (Karssen, 1970;Smith, 1975). Yet, some seeds are not affected by white light and are called non-photoblastic.…”

Section: Environmental Control Of Dormancymentioning

confidence: 99%

Seed dormancy characteristics in six weed species as affected by after-ripening temperatures and field conditions

Chavarría

View full text Add to dashboard Cite

The Influence of Red and Infrared Light on the Respiration of Photoblastic Seeds

Cited by 26 publications

References 5 publications

Analysis of Germination Processes of Lettuce Seed by Means of Temperature and Anaerobiosis

Analysis of Germination Processes of Lettuce Seed by Means of Temperature and Anaerobiosis

On the Mechanisms of Light‐induced Germination Inhibition of Phacelia Tanacetifollv

Seed dormancy characteristics in six weed species as affected by after-ripening temperatures and field conditions

Contact Info

Product

Resources

About