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《Acta Biologiae Experimentalis Sinica》 1989-01
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MEGASPOROGENESIS AND THE ABORTION OF FEMALE GAMETOPHYTE IN HAPLOIDS IN NICOTIANA TABACUM L.

Ding Hui-bin Wang Yao-zhi Wang Lun-shan Wang Xiu-jun and Gao Qing-xiang (Department of Biology,Lanzhou University)  
The meiosis of MMC(megaspore mothercell) and process of ES (embryo sac) deve-lopment in N.tabacum L.haploid pollenplants were studied in this paper.The abnor-mality of meiotic division appears as stickeswith various degree at pachytene and diaki-nesis.At the metaphase Ⅰ,univalem scatteredin cytoplasm,or some chromosomes concen-trate on the plate,at times spindle bend toa sickle.At the anaphase Ⅰ and telophase Ⅰlagging chromosomes and micronuclei oftenwere discovered.At the anaphase Ⅱ and telo-phase Ⅱ,chromosomal bridges and micronu-clei also were observed.At the dyad stagethe cells began to degenerate for various de-gree.Development of the tetrad and func-tional megaspore also stopped and degenera-ted.Individual ES might develop to fournucleate stage,but it degenerate later on.Af-ter eight nucleate stage,but the further de-velopment of ES were not observed.Becauseof abnormality of meiosis,female gametophyteaborted at dyad-four nucleate ES.
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【Co-citations】
Chinese Journal Full-text Database 2 Hits
1 YUAN Hui-yan,JIANG Qian,ZHANG Qi(School of Urbanology,Soochow University,Suzhou,Jiangsu 215123,China);The Chromosome Ploidy of Pollen-derived Plant and Technology of Reduplication[J];Northern Horticulture;2008-02
2 HAO SHUI;HE MENGYUAN;XU ZONGYAO;ZOU MINGQIAN;HU HAN;XI ZIYING;OUYANG JUNWEN Department of Biology, Northeast Normal University Institute of Genetics, Academia Sinica;ANALYSIS OF MEIOSIS OF THE ANTHERDERIVED HAPLOID PLANTS IN WHEAT (TRITICUM AESTIVUM L.)[J];中国科学A辑(英文版);1981-06
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