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Citation:

A Study on Cold Tolerance of Various Seed Sources of Masson Pine

  • Received Date: 1997-12-22
    Accepted Date: 1998-10-15
  • This paper is dealt with genetic variation of cold tolerance of ten representative of seed sources of masson pine which were raised and planted at three locations,Tonglu of Zhejiang,Liuan of Anhui and Tongbo of Henan.The results showed that there existed marked interprovenance variations and no significant intraprovenance variations for relative freezing damage and bud set index of seedlings at all three sites.Electroconductivities of the southern,central and northern seed sources were found to performed various change patterns under different low temperature treatments or different treatment duration at the same low temperature.The correlation analysis indicated that the electroconductivities were strongly and positively related to relative freezing damage and negatively to bud set index.The high and negative correlation was be evident between relative freezing damage and bud set index.The estimated broad heritabilities of freezing damage and bud set index were 0.76~0.86 and 0.59~0.63 respectively.
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    沈阳化工大学材料科学与工程学院 沈阳 110142

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A Study on Cold Tolerance of Various Seed Sources of Masson Pine

  • 1. The Research Institute of Subtropical Forestry, CAF, Fuyang 311400, Zhejiang, China
  • 2. Forestry Bureau of Tongbo County, Henan Province, Tongbo 474750, Henan, China
  • 3. Forest Breeding Station of Liuan City, Anhui Province, Liuan 232700, Anhui, China

Abstract: This paper is dealt with genetic variation of cold tolerance of ten representative of seed sources of masson pine which were raised and planted at three locations,Tonglu of Zhejiang,Liuan of Anhui and Tongbo of Henan.The results showed that there existed marked interprovenance variations and no significant intraprovenance variations for relative freezing damage and bud set index of seedlings at all three sites.Electroconductivities of the southern,central and northern seed sources were found to performed various change patterns under different low temperature treatments or different treatment duration at the same low temperature.The correlation analysis indicated that the electroconductivities were strongly and positively related to relative freezing damage and negatively to bud set index.The high and negative correlation was be evident between relative freezing damage and bud set index.The estimated broad heritabilities of freezing damage and bud set index were 0.76~0.86 and 0.59~0.63 respectively.

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