中国水稻科学

中国水稻科学

• 研究报告 • 上一篇    下一篇

不同染色体倍性水稻植株光合特性的研究

傅亚萍;颜红岚;李玲方 *;于永红;斯华敏;胡国成;肖 晗;孙宗修   

  1. 中国水稻研究所，农业部水稻生物学重点开放实验室，浙江 杭州 310006
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:1999-07-10 发布日期:1999-07-10

Photosynthesis-Related Characteristics of Different Ploidy Rice Plants

Fu Yaping; Yan Honglan; Li Lingfang; Yu Yonghong; Si Huamin; Hu Guocheng; Xiao Han; Sun Zongxiu   

  • Received:1900-01-01 Revised:1900-01-01 Online:1999-07-10 Published:1999-07-10

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摘要： 以花培获得的粳稻02428单倍体、二倍体和四倍体植株为材料，测定了与光合作用有关的若干性状。气孔大小、比叶重随染色体倍性的增加而递增；而单位面积的气孔数则呈递减的趋势；叶绿素含量与染色体倍性无明显的相关性。剑叶净光合作用速率的两年测定结果相符，单倍体是9.39和10.16 mg CO2/dm2·h，二倍体是17.57和15.80 mg CO2/dm2·h，四倍体是22.64和22.52 mg CO2/dm2·h。讨论了性状表达与DNA剂量的关系。

关键词: 染色体, 倍性, 光合作用, 水稻, 性状

Abstract: The characteristics related with photosynthesis were measured using anther culture-derived haploid, diploid, and tetraploid p1ants of o2428, a japonica rice line (Oryza sativa L. ). The stomatal size and specific leaf weight increased as ploidy increasing while stomatal density decreased. There was no correlation between chlorophyll content and chromosome dosage. The photosynthetic rates of flag leaf in haploid were 9. 39 and 10.16 mg CO2/dm2 h respectively in continual two years,that in diploid were 17. 57 and 15. 8o mg CO2/dm2 h,and that in tetraploid were the highest, upto 22.64 and 22. 52 mg CO2/dm2 h, respectively. The relationship between trait expression and DNA dosage was discussed.

Key words: chromosome, ploidy, photosynthesis, rice, trait