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,对初花期功能叶的净光合速率、光合速率日变化、需光规律、叶绿素含量、希尔反应活性等生理生化指标进行了测定。结果表明:随体染色体的缺失或附加对光合速率都有负效应,且缺失比附加一条随体染色体对初花期的大白菜光合速率的负面影响更大;随体单体和三体大白菜的光合速率日变化均呈典型的不对称双峰曲线,但随体单体的"午休"现象不如随体三体和二倍体明显;随体单体和三体的光补偿点和光饱和点均高于二倍体;随体染色体的缺失或附加对叶绿素a和b都有正效应,但对叶绿素a/b的比值具有负效应;随体染色体的缺失或附加均对希尔反应活性有负效应。
Based on the experiment of photosynthetic rate,diurnal photosynthetic variation,light response curve,chlorophyll content and Hill reaction activity of the satellite chromosome monosome（sat-monosome）,diploid and trisome（sat-trisome） of Chinese cabbage, we researched the effect of additioning or dropping of satellite chromosome on the photosynthetic characteristics.The results showed that the additioning or dropping of sat-chromosome had a negative effect on the Pn,chla/b content and Hill reaction activity, but a positive effect on chlorophyll content.The curves of diurnal change of Pn of three lines were similar,all showed typical two peaks.The light compensation point and light saturation point of Monosome and Trisome were higher than Diploid.
出处
《天津农业科学》
CAS
2011年第1期14-17,21,共5页
Tianjin Agricultural Sciences
基金
国家自然科学基金项目(30270915)
河北省自然科学基金项目(C020210)
关键词
大白菜
初花期
随体单体
随体三体
光合作用
chinese cabbage
initial flowering stage
satellite chromosome monosome
trisome
photosynthesis
