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Survival and strobili production in topgrafted scions from young Pinus sylvestris seedlings.

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Title: Survival and strobili production in topgrafted scions from young Pinus sylvestris seedlings.
Authors: Almqvist, Curt1 (AUTHOR) curt.almqvist@skogforsk.se
Source: Scandinavian Journal of Forest Research. Sep2013, Vol. 28 Issue 6, p533-539. 7p. 6 Charts.
Subject Terms: *Seedlings, *Plants, Scots pine, Achatinellidae, Strobilidiidae
Abstract: Reducing the generation turnover increases the genetic gain in a breeding programme. Topgrafting, new genetic material being grafted into the crown of ramets of reproductive mature trees, can deliver this aim since it is able to induce strobili production in young material of conifers. To this end, I studied the effect of scion age (seedlings of 4–6 years from seed) on topgraft vitality/survival, and female and male strobili production inPinus sylvestris(L.) over 5 years. The seedlings' growing environment prior to topgrafting had a significant impact on topgraft vitality, with more vital topgrafts obtained from potted seedlings than from seedlings grown in raised nursery beds. However, the growth environment had no clear effect on female or male strobili production. In the second year, after grafting up to 76% of the topgrafted seedlings had female strobili. Vitality increased with age of the seedling from which the scions were collected, but differences in both female and male strobili production were only marginal. The position of the topgraft within the interstock crown influenced both vitality and strobili production, with higher vitality and greater male strobili production in low positions and greater female strobili production in high positions. Based on these results, breeders should perform topgrafting as soon as the seedlings have enough scions for planned crossing activities. [ABSTRACT FROM AUTHOR]
Copyright of Scandinavian Journal of Forest Research is the property of Taylor & Francis Ltd 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.)
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  Label: Title
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  Data: Survival and strobili production in topgrafted scions from young Pinus sylvestris seedlings.
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  Data: <searchLink fieldCode="AR" term="%22Almqvist%2C+Curt%22">Almqvist, Curt</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> curt.almqvist@skogforsk.se</i>
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  Data: <searchLink fieldCode="JN" term="%22Scandinavian+Journal+of+Forest+Research%22">Scandinavian Journal of Forest Research</searchLink>. Sep2013, Vol. 28 Issue 6, p533-539. 7p. 6 Charts.
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  Data: *<searchLink fieldCode="DE" term="%22Seedlings%22">Seedlings</searchLink><br />*<searchLink fieldCode="DE" term="%22Plants%22">Plants</searchLink><br /><searchLink fieldCode="DE" term="%22Scots+pine%22">Scots pine</searchLink><br /><searchLink fieldCode="DE" term="%22Achatinellidae%22">Achatinellidae</searchLink><br /><searchLink fieldCode="DE" term="%22Strobilidiidae%22">Strobilidiidae</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Reducing the generation turnover increases the genetic gain in a breeding programme. Topgrafting, new genetic material being grafted into the crown of ramets of reproductive mature trees, can deliver this aim since it is able to induce strobili production in young material of conifers. To this end, I studied the effect of scion age (seedlings of 4–6 years from seed) on topgraft vitality/survival, and female and male strobili production inPinus sylvestris(L.) over 5 years. The seedlings' growing environment prior to topgrafting had a significant impact on topgraft vitality, with more vital topgrafts obtained from potted seedlings than from seedlings grown in raised nursery beds. However, the growth environment had no clear effect on female or male strobili production. In the second year, after grafting up to 76% of the topgrafted seedlings had female strobili. Vitality increased with age of the seedling from which the scions were collected, but differences in both female and male strobili production were only marginal. The position of the topgraft within the interstock crown influenced both vitality and strobili production, with higher vitality and greater male strobili production in low positions and greater female strobili production in high positions. Based on these results, breeders should perform topgrafting as soon as the seedlings have enough scions for planned crossing activities. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Scandinavian Journal of Forest Research is the property of Taylor & Francis Ltd 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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RecordInfo BibRecord:
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    Identifiers:
      – Type: doi
        Value: 10.1080/02827581.2013.803598
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      – Code: eng
        Text: English
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      Pagination:
        PageCount: 7
        StartPage: 533
    Subjects:
      – SubjectFull: Seedlings
        Type: general
      – SubjectFull: Plants
        Type: general
      – SubjectFull: Scots pine
        Type: general
      – SubjectFull: Achatinellidae
        Type: general
      – SubjectFull: Strobilidiidae
        Type: general
    Titles:
      – TitleFull: Survival and strobili production in topgrafted scions from young Pinus sylvestris seedlings.
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              M: 09
              Text: Sep2013
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              Y: 2013
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              Value: 28
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            – TitleFull: Scandinavian Journal of Forest Research
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