摘要
[目的]研究7号同源染色体(7A、7B、7D)对小麦光合作用的影响,为今后采用遗传和生理生化手段进行小麦的高光效遗传改良提供一定理论依据。[方法]以山西农科院温室大棚中种植的小麦中国春及其7A、7B、7D染色体缺失植株N7A、N7B、N7D(美国堪萨斯州立大学B.S.Gill教授提供)为材料,于灌浆初期进行相关指标测定,研究小麦7A、7B、7D染色体对小麦光合特性的影响。[结果]N7A、N7B在灌浆初期的光合速率、气孔导度、原初光化学效率(Fv/Fm)、PSⅡ的实际光化学效率(ФPSⅡ)、PSⅡ的表观电子传递速率(ETR)都明显低于中国春,且差异达显著水平(P<0.05);N7D的光合速率、气孔导度都明显高于普通小麦中国春,且差异达显著水平(P<0.05);Fv/Fm、ФPSⅡ、ETR也高于中国春,但差异不显著。[结论]7A、7B染色体对光合速率有正效应,与气孔导度和光化学反应(荧光参数)均有关系;7D染色体对光合速率具有负效应,而这种负效应主要与气孔导度有关,与光化学反应(荧光参数)无关。
[Objective]The research aimed to study the effects of No.7 homologous Genome（7A,7B,7D） on wheat photosynthesis and provide theoretical basis for using genetic and physiological and biochemical means to realize wheat high effects genetic improvement.[Method] Triticum asetivum cultivar Chinese Spring wheat and its nullisomic wheat（provided by professor B.B.Gill,Kansas State University,America） were used to study the effects of 7A,7B,7D genome chromosomes on photosynthetic characteristics of wheat.[Result]Photosynthetic rate（Pn）,stomatal conductance,PSⅡ primary chemical efficiency（Fv/Fm）,quantum yield of PSⅡ liner electron（ФPSⅡ） and estimate electron transportation（ETR） of N7A and N7B were lower than those of Chinese Spring（P 0.05） ;and Pn,stomatal conductance of N7D were higher than those of Chinese Spring（P 0.05） ;Fv/Fm,ФPSⅡ,ETR of N7D were also higher without significant than those of Chinese Spring.[Conclusion]7A and 7B genosome had positive effects on photosynthesis in common wheat,it was mainly related to stomatal conductance and photoreaction（chlorophyll fluorescence parameters） ;but 7D genosome had opposite effects,it mainly related to stomatal conductance but not related to photoreaction（chlorophyll fluorescence parameters）.
出处
《安徽农业科学》
CAS
北大核心
2010年第4期2200-2201,2208,共3页
Journal of Anhui Agricultural Sciences
基金
山西省优秀青年学术带头人资助项目
关键词
染色体缺失
小麦
光合特性
荧光参数
Genome deletion
Triticum asetivum
Photosynthetic characteristics
Fluorescence parameters
