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当前位置: 首页 > 文章 > 大白菜随体染色体的附加和减少对种株光合特性的影响 园艺学报 2007,34 (5) 1157-1162
Position: Home > Articles > Characteristics of Photosynthesis in Seed Plants of Satellite Chromosome Monosome, Diploid and Trisome of Chinese Cabbage Acta Horticulturae Sinica 2007,34 (5) 1157-1162

大白菜随体染色体的附加和减少对种株光合特性的影响

作  者：
申书兴;侯喜林;付雅丽
单  位：
南京农业大学作物遗传与种质资源创新国家重点实验室园艺学院;石家庄市农业科学研究院
关键词：
大白菜;染色体;染色体附加;单体;三体;光合作用;染色体工程
摘  要：
以大白菜随体单体、三体和二倍体为试材,在自然条件下,对生殖生长期的功能叶的叶绿素含量、希尔反应活性、净光合速率、光合速率日变化、Rubisco活性等生理生化指标进行了测定,以研究同源染色体的附加和减少对光合特性的影响,为开展染色体工程育种提供参考。结果表明:随体染色体的减少或附加对叶绿素含量有正效应,对叶绿素a/b的比值有负效应。随体染色体的减少或附加对大白菜的光合速率都产生不同程度的负效应。随体三体和二倍体净光合速率日变化均呈典型的双峰曲线,有明显的"午休"现象,随体单体"午休"现象不明显。随体染色体的减少或附加对希尔反应和Rubisco活性均有负效应。希尔反应活性和Rubisco活性的降低是引起随体单体、三体光合速率降低的直接原因。
译  名：
Characteristics of Photosynthesis in Seed Plants of Satellite Chromosome Monosome, Diploid and Trisome of Chinese Cabbage
作  者：
SHEN Shu-xing~(1.2),HOU Xi-lin~1 and FU Ya-li~3 (1 State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China;2 College of Horticulture, Hebei Agricultural University, Baoding, Hebei 071001, China;3 Shijiazhuang Academy of Agricultural Science, Shijiazhuang 050041, China)
关键词：
Chinese cabbage;;Chromosome;;Chromosome addition;;Monosome;;Trisome;;Photosynthesis;;Chromosomal engineering
摘  要：
In order to research the effect of additioning or dropping of satellite chromosome on the photo- synthetic characteristics of Chinese cabbage, the satellite chromosome monosome(sat-monosome), diploid and trisome(sat-trisome)of Chinese cabbage were used to examine the chlorophyll content, Hill reaction ac- tivity, photosynthetic rate(Pn),diurnal variation and Rubisco activity etc. The result showed that the addi- tioning or dropping of sat-chromosome had a positive effect on chlorophyll content and a negative effect on chl. a/b. The additioning or dropping of sat-chromosome had a negtive effect on the photosynthetic rate(Pn). The curves of diurnal change of Pn of trisome and diploid were similar, all showed typical two peaks and showed conspicuous‘noon sleep’.The decline of Hill reaction activity and Rubisco activity were the direct factors resulting in low photosynthetic rate of sat-monosome and sat-trisome. The results helped to realize the function of sat-chromosome of Chinese cabbage and high-photosynthetic efficiency breeding using the chromo- some engineering.

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