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GERMINATION RESPONSES TO LIGHT AND ALTERNATING TEMPERATURES IN EUROPEAN POPULATIONS OF DACTYLIS GLOMERATA L. IV. THE EFFECTS OF STORAGE.

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Title: GERMINATION RESPONSES TO LIGHT AND ALTERNATING TEMPERATURES IN EUROPEAN POPULATIONS OF DACTYLIS GLOMERATA L. IV. THE EFFECTS OF STORAGE.
Authors: Probert, R. J.1, Smith, R. D.1, Birch, P.2
Source: New Phytologist. Nov85, Vol. 101 Issue 3, p521-529. 9p.
Subjects: Orchard grass, Germination, Seed dormancy, Storage, Temperature, Plant physiology
Abstract: A direct linear relationship between germination responses to light and alternating temperatures and storage period was recorded when seeds of three populations of Dactylis glomerata L. of contrasting origin were stored under cool dry laboratory conditions (15 °C, 15 % r.h.). Under these conditions the rate of after-ripening in two batches of a Mediterranean population were independent of original dormancy level but lower than in populations originating from southern England and Western France. The effects of storage on germination responses were additive in all cases. In contrast, when seeds of a population from southern England were stored under natural conditions of temperature and humidity from August to April germination behaviour was dependent on the conditions used in germination tests. Evidence is presented that the rate of loss of primary dormancy under natural conditions exceeded that which occurred during controlled storage in the laboratory. An apparent simultaneous loss of primary dormancy and induction of secondary dormancy observed when seeds were stored under natural conditions is discussed. Dry storage at -75 °C effectively arrested after-ripening over a period of 110 weeks. [ABSTRACT FROM AUTHOR]
Copyright of New Phytologist is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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  Data: GERMINATION RESPONSES TO LIGHT AND ALTERNATING TEMPERATURES IN EUROPEAN POPULATIONS OF <em>DACTYLIS GLOMERATA</em> L. IV. THE EFFECTS OF STORAGE.
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  Data: <searchLink fieldCode="AR" term="%22Probert%2C+R%2E+J%2E%22">Probert, R. J.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Smith%2C+R%2E+D%2E%22">Smith, R. D.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Birch%2C+P%2E%22">Birch, P.</searchLink><relatesTo>2</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22New+Phytologist%22">New Phytologist</searchLink>. Nov85, Vol. 101 Issue 3, p521-529. 9p.
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  Data: <searchLink fieldCode="DE" term="%22Orchard+grass%22">Orchard grass</searchLink><br /><searchLink fieldCode="DE" term="%22Germination%22">Germination</searchLink><br /><searchLink fieldCode="DE" term="%22Seed+dormancy%22">Seed dormancy</searchLink><br /><searchLink fieldCode="DE" term="%22Storage%22">Storage</searchLink><br /><searchLink fieldCode="DE" term="%22Temperature%22">Temperature</searchLink><br /><searchLink fieldCode="DE" term="%22Plant+physiology%22">Plant physiology</searchLink>
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  Data: A direct linear relationship between germination responses to light and alternating temperatures and storage period was recorded when seeds of three populations of <em>Dactylis glomerata</em> L. of contrasting origin were stored under cool dry laboratory conditions (15 °C, 15 % r.h.). Under these conditions the rate of after-ripening in two batches of a Mediterranean population were independent of original dormancy level but lower than in populations originating from southern England and Western France. The effects of storage on germination responses were additive in all cases. In contrast, when seeds of a population from southern England were stored under natural conditions of temperature and humidity from August to April germination behaviour was dependent on the conditions used in germination tests. Evidence is presented that the rate of loss of primary dormancy under natural conditions exceeded that which occurred during controlled storage in the laboratory. An apparent simultaneous loss of primary dormancy and induction of secondary dormancy observed when seeds were stored under natural conditions is discussed. Dry storage at -75 °C effectively arrested after-ripening over a period of 110 weeks. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of New Phytologist is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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      – Type: doi
        Value: 10.1111/j.1469-8137.1985.tb02857.x
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      – Code: eng
        Text: English
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      Pagination:
        PageCount: 9
        StartPage: 521
    Subjects:
      – SubjectFull: Orchard grass
        Type: general
      – SubjectFull: Germination
        Type: general
      – SubjectFull: Seed dormancy
        Type: general
      – SubjectFull: Storage
        Type: general
      – SubjectFull: Temperature
        Type: general
      – SubjectFull: Plant physiology
        Type: general
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      – TitleFull: GERMINATION RESPONSES TO LIGHT AND ALTERNATING TEMPERATURES IN EUROPEAN POPULATIONS OF <em>DACTYLIS GLOMERATA</em> L. IV. THE EFFECTS OF STORAGE.
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            NameFull: Probert, R. J.
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            NameFull: Smith, R. D.
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            NameFull: Birch, P.
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            – D: 01
              M: 11
              Text: Nov85
              Type: published
              Y: 1985
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