中国水稻科学

中国水稻科学

• 研究简报 • 上一篇    下一篇

高浓度激素喷穗对多胚水稻胚胎发育的影响

刘向东；李维明；潘润森；林光霖；林 曦   

  1. 福建农学院，福州350002
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:1993-10-10 发布日期:1993-10-10

Effect of High Concentration of Hormone on Embryo Development in Polyembryonic Rice

Liu Xiangdong; Li Weiming; Pan Runsen; Lin Guanglin; Lin Xi   

  • Received:1900-01-01 Revised:1900-01-01 Online:1993-10-10 Published:1993-10-10

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关键词: 水稻, 胚胎学, 激素, 无融合生殖

Abstract: The effects of high concentration of hormones, 2500 mg/kg 2,4-D and 2500 mg/kg GA3, on the embryo development of five polyembryonic rice by spike-spraying were studied. It showed that both the hormones had significant effect on killing zygotic proembryo, and the rate of killed embryos ranged from 15. 6% to 56. 2%. The frequencies of adventitious proembryo obviously increased in hormone treatment and the highest frequency was 4. 8%, which was nearly 4 times as high as that in CK. But the effect of hormone on sex-polyembryo frequency varied with different materials. It seemed that both hormones slightly decrease the polyembryo frequency of polyembryonic materials except that the frequency of PM3 rose sharply. Moreover, some kinds of abnormal embryos, such as "dwarf embryo", " giant embryo" etc., were observed.

Key words: Apomixis, Embryology, Hormone, Polyembryony