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  • Megasporogenesis and development of female gametophyte in Chinese chestnut (Castanea mollissima) cultivar 'Yanshanzaofeng'.

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    Author(s) : Zou FengGuo SuJuanXie PengXiong HuanLv WenJunLi GuangHui

    Author Affiliation : Key laboratory for Silviculture and Conservation, Ministry of Education, Beijing Forestry University, Beijing, China.

    Author Email : guosujuan2011@gmail.com

    Journal article : International Journal of Agriculture and Biology 2014 Vol.16 No.5 pp.1001-1005 ref.28

    Abstract : Chinese Chestnut (Castanea mollissimacastanea mollissimaSubject Category: Organism Names
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    Blume) is used as a non-wood forest tree and well-known for its edible value. Some chestnut cultivars are particularly prone to erratic fruit setfruit setSubject Category: Natural Processes
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    showing very low or even empty cupule for unknown reasons. To investigate the causes of lack of fruit set in them, the megasporgensis and development of female gametophytes of C. mollissima 'Yanshanzaofeng' were evaluated by microscopy. The results are showed that 'Yanshanzaofeng' was diclinous with polycarpous compound pistils, axile placentas, and commonly two anatropous ovules in each loculament. An archesporial cell in the nucellus tissue would directly develop into a megasporocyte that subsequently formed the megaspore tetrads after meiosis. The functional megaspore near the chalazal end developed into mature embryo sac, which was of Polygonum type. After double fertilization, the proembryo developed into a mature embryo going through the clavate, globular, heart, torpedo and cotyledon stages. The embryo development conformed to the Onagrad type and the endospermendospermSubject Category: Anatomical and Morphological Structures
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    development was nuclear. Abnormal embryo sacs or abortive ovules were observed in the ovary. Our results suggested that the abortive ovules is a likely cause of low seed setseed setSubject Category: Natural Processes
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    in C. mollissima 'Yanshanzaofeng'.

    ISSN : 1560-8530

    URL : http://www.fspublishers.org/published...

    Record Number : 20143334359

    Publisher : Friends Science Publishers

    Location of publication : Faisalabad

    Country of publication : Pakistan

    Language of text : English

    Indexing terms for this abstract:

    Organism descriptor(s) : Castanea mollissimacastanea mollissimaSubject Category: Organism Names
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    Descriptor(s) : endospermendospermSubject Category: Anatomical and Morphological Structures
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    , fruit setfruit setSubject Category: Natural Processes
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    , megasporogenesismegasporogenesisSubject Category: Miscellaneous
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    , plant developmentplant developmentSubject Category: Natural Processes
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    , plant embryosplant embryosSubject Category: Anatomical and Morphological Structures
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    , seed setseed setSubject Category: Natural Processes
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    Identifier(s) : Chinese chestnut

    Broader term(s) : CastaneacastaneaSubject Category: Organism Names
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    , FagaceaefagaceaeSubject Category: Organism Names
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    , FagalesfagalesSubject Category: Organism Names
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    , eudicotseudicotsSubject Category: Organism Names
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    , angiospermsangiospermsSubject Category: Organism Names
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    , SpermatophytaspermatophytaSubject Category: Organism Names
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    , plantsplantsSubject Category: Organism Names
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    , eukaryoteseukaryotesSubject Category: Organism Names
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