摘要
以花培获得的粳稻o2428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1o．16mgCo2／dm2·h，二倍体是17.57和15．8omgCo2／dm2·h．四倍体是22．64和22．52mgCo2／dm2·h。讨论了性状表达与DNA剂量的关系。
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 lo. l6 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.
出处
《中国水稻科学》
CAS
CSCD
北大核心
1999年第3期157-160,共4页
Chinese Journal of Rice Science
关键词
染色体
倍性
光合作用
水稻
性状
chromosome
ploidy
photosynthesis
rice
trait
