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Effects of Homologous Genome 7 on Gas Exchange and Chlorophyll fluorescence parameters of Wheat

Agricultural Science & Technology 2010年第1期11卷 25-27页

作者：魏爱丽畅志坚王会琴詹海仙太原师范学院生物系山西太原030031 山西农业科学院作物遗传研究所山西太原030031

[Objective]To study the effects of homologous chromosomes 7 （7A,7B and 7D） on wheat photosynthesis and provide theoretical basis for breeding high photosynthetic efficiency wheat by genetic,physiological and biochemical means. [Method]The Triticum asetivum cultivar Chinese Spring wheat and nullisomic wheat （N7A,N7B and N7D） were planted in greenhouse. The photosynthetic indexes were determined at early filling stage. [Result]The photosynthetic rate （Pn）,stomatal conductance （Gs）,primary photochemical efficiency （Fv/Fm）,actual chemical efficiency of photosystem II （ФPS II） and apparent electron transfer rate of photosystem II （ETR） were significantly lower in the N7A and N7B than in the Chinese Spring （P0.05）. The photosynthetic rate and stomatal conductance was significantly lower in the N7D than in the Chinese Spring （P0.05）. The Fv/Fm,ФPS II,ETR of N7D were higher than that of the Chinese Spring without significant difference. [Conclusion]The homologous chromosomes 7A and 7B have positive effects on photosynthetic rate and have relationship with stomatal conductance and photoreaction （chlorophyll fluorescence parameters）. The homologous chromosome 7D has negative effects on photosynthetic rate,which is mainly related to stomatal conductance rather than photoreaction.

关键词： Chromosome deletion Triticum asetivum Photosynthetic characteristics fluorescence parameters

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Response of growth,metabolism and yield of Dendrocalamopsis oldhami to long-day photoperiod and fertilizer compensation

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Journal of Forestry Research 2023年第1期34卷 151-166页

作者： Zixu Yin Shaohui Fan Wen Xia Yang Zhou Xiao Zhou Xuan Zhang Chengji Li Fengying Guan International Center for Bamboo and Rattan Key Laboratory of National Forestry and Grassland AdministrationBeijing 100102People’s Republic of China National Location Observation and Research Station of the Bamboo Forest Ecosystem in Yixing National Forestry and Grassland AdministrationYixing 214200People’s Republic of China

The effects of long-day photoperiod on growth,photo synthetic fluorescence,carbon and nitrogen metabolism,and yield of Dendrocalamopsis oldhami and the compensation effects of fertilization were investigated.A completely randomized design was used with two light factors(bamboo culms cultivated in solar greenhouse under long-day[Ls]and short-day[Ln]treatments);two organic nitrogen fertilizer levels(application of organic fertilizer[OF]and no organic fertilizer[NF]);and three nitrogen fertilizer levels(Low[N0],medium[N1]and high nitrogen[N2]).Leaf chlorophyll and fluorescence parameters(φPo,PIABS,and ETo/CSm)decreased and DIo/CSmincreased in Ls compared to *** acetic acid(IAA)and gibberellic acid(GA3)levels decreased,whereas abscisic acid(ABA)*** area decreased and leaf dry mass *** contents of carbon and nitrogen metabolism-related enzymes(nitrate reductase,glutamine synthetase,amylase,and sucrose synthase)and products(total nitrogen,organic carbon,soluble sugar,and starch)*** bamboo shoot weight and diameter at breast height decreased,whereas shoot quantity and total yield *** application significantly affected physiological growth and yield in the two light treatments,thus promoting carbon and nitrogen ***φPo,PIABS,IAA,and GA3contents increased slightly,whereas ABA levels *** quantity,individual weight,and total yield *** A,soluble sugar,and total yield to organic manure and light were lower than those of nitrogen levels(FN>FL,FO).Other indicators showed lower responses to different fertilization treatments than the light factor(FL>FN,FO).The ability of *** to alter its morphological and physiobiochemical traits and yield in response to variations in light applications may translate into high phenotypic *** significantly improved photoplasticity of *** Ls,*** had high metabolic *** easily inhibited by light,and showed accelerate

关键词： Light Nitrogen Organic fertilizer fluorescence parameters Carbon and nitrogen metabolism Yield

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