Histology of sterile male and female cones in Pinus monticola (western white pine)

被引:0
|
作者
Vivienne R. Wilson
John N. Owens
机构
[1] Royal Roads University,Science Technology and Environment Division
[2] University of Victoria,Centre for Forest Biology
来源
Sexual Plant Reproduction | 2003年 / 15卷
关键词
Sterility; Tapetum; Pollen; Female gametophyte;
D O I
暂无
中图分类号
学科分类号
摘要
Two years of histological samples were collected from a Pinus monticola Dougl. (western white pine) tree identified as not producing mature pollen or seed cones. Anatomical information was collected to the ultrastructural level, to assess possible mechanisms for pollen and cone abortion resulting in sterility. Development of male and female gametophytes in the sterile western white pine tree was arrested after meiosis and before further cell divisions could take place. Sterile male gametophytes (pollen grains) had poorly developed pollen walls and sacci, reduced and degenerative cytoplasm, and no evidence of stored starch grains. The pollen cone aborted prior to pollen dehiscence. Meiosis of the megaspore mother cell in the ovule produced four megaspores, but development was stopped at the functional megaspore stage. The seed cone aborted in the first year of growth before winter dormancy. Tapetal tissue in sterile microsporangia appeared similar to that of fertile microsporangia, until the vacuolate, uninucleate microspore stage. Tapetal cells and thecal fluid surrounding the sterile microspores persisted well past the time when microsporangia on fertile trees started the process of maturation and desiccation. At pollen dehiscence, sterile pollen cones did not release any pollen and the microsporangia were filled with a sticky fluid. The behaviour of the tapetum in P. monticola sterile cones is compared with reports of tapetal function and malfunction reported in studies of angiosperm and other gymnosperm species. The occurrence and timing of gametophyte abortion in both cone sexes suggests a genetic rather than environmental basis for the sterility mechanism.
引用
收藏
页码:301 / 310
页数:9
相关论文
共 50 条
  • [1] Histology of sterile male and female cones in Pinus monticola (western white pine)
    Wilson, VR
    Owens, JN
    SEXUAL PLANT REPRODUCTION, 2003, 15 (06): : 301 - 310
  • [2] Micropropagation of western white pine (Pinus monticola) starting with mature embryos
    Lapp, MS
    Malinek, J
    Coffey, M
    PLANT CELL REPORTS, 1995, 15 (3-4) : 264 - 267
  • [3] BENZENE EXTRACTIVES OF WESTERN WHITE PINE (PINUS-MONTICOLA) BARK
    NAGASAMP.BA
    TODA, JK
    CONNER, AH
    ROWE, JW
    ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 1971, (MAR-A): : 84 - &
  • [5] Armillaria altimontana is not associated with damage to western white pine (Pinus monticola) planted in northern Idaho
    Hanna, J. W.
    Warwell, M. V.
    McDonald, G. I.
    Kim, M. S.
    Lalande, B. M.
    Stewart, J. E.
    Klopfenstein, N. B.
    PHYTOPATHOLOGY, 2017, 107 (12) : 94 - 94
  • [6] Western white pine (Pinus monticola Dougl.) reproduction: I. Gametophyte development
    John N. Owens
    Darla Bruns
    Sexual Plant Reproduction, 2000, 13 : 61 - 74
  • [7] NEW TRITERPENES FROM THE BARK OF WESTERN WHITE-PINE (PINUS-MONTICOLA DOUGL)
    KUTNEY, JP
    EIGENDORF, G
    WORTH, BR
    ROWE, JW
    CONNER, AH
    NAGASAMPAGI, BA
    HELVETICA CHIMICA ACTA, 1981, 64 (04) : 1183 - 1207
  • [8] Dasyscypha fusco-sanguinea Rehm on western white pine, Pinus monticola Dougl.
    Stillinger, CR
    PHYTOPATHOLOGY, 1929, 19 (06) : 575 - 584
  • [9] Western white pine (Pinus monticola Dougl.) reproduction:: I.: Gametophyte development
    Owens, JN
    Bruns, D
    SEXUAL PLANT REPRODUCTION, 2000, 13 (02): : 61 - 74
  • [10] NOVEL TRITERPENES FROM WESTERN WHITE-PINE (PINUS-MONTICOLA DOUGL) BARK
    KUTNEY, JP
    EIGENDOR.G
    SWINGLE, RB
    DNOWLES, GD
    ROWE, JW
    NAGASAMP.BA
    TETRAHEDRON LETTERS, 1973, (33) : 3115 - 3118