蔺经;杨青松;王中华;李晓刚;常有宏;

• 1:江苏省农业科学院园艺研究所

摘要(Abstract)：

为进一步揭示梨实生树童区和成年区的生理差异,以7 a生华酥×西子绿梨杂种单株为试材,比较分析了童区和成年区叶片光合荧光特性及超微结构差异。结果表明,童年区和成年区叶片光合荧光各参数随光强增加的变化趋势基本一致,但是在同一光强下,成年区叶片净光合速率(Pn)、气孔导度(Gs)、蒸腾速率(Tr)、胞间CO2浓度(Ci)以及光饱和点(Im)、表观量子效率(AQY)、光化学猝灭系数(qP)、非光化学猝灭系数(NPQ)、PSⅡ电子传递量子产率(ФPSⅡ)、电子传递速率(ETR)等指标参数均显著高于童区叶片。其原因可能在于成年区叶片具有较高的叶绿素含量、叶绿体紧贴细胞壁、个体大、片层清晰、排列有序,而童区叶绿体个体相对较小、片层结构垛叠紧密且数量较多。

关键词(KeyWords)： 梨;杂种苗;童区;成年区;光合作用;叶绿素荧光;超微结构

Abstract:

Keywords:

基金项目(Foundation): 江苏省省自主创新项目(CX(10)108)

作者(Author): 蔺经;杨青松;王中华;李晓刚;常有宏;

Email:

DOI: 10.13925/j.cnki.gsxb.2011.05.006

参考文献(References)：

• [1]LI Zai-long,SHEN De-xu,ZHENG Shu-qun.On the juvenile span,fruiting and inheritance of pear seedlings[J].Journal of Zhejiang U-niversity(Agric.&Life Sci.),1981,7(3):51-56.李载龙,沈德绪,郑淑群.梨实生苗的童程、结果和遗传[J].浙江农业大学学报,1981,7(3):51-56.
• [2]SUN Yong-hua,CHEN Xue-sen.Study on the juvenile trait of leafin apricot hybrid seedings[J].Journal of Fruit Science,2005,22(4):327-330.孙永华,陈学森.杏杂种实生树叶片童性的研究[J].果树学报,2005,22(4):327-330.
• [3]CHEN Da-ming,SHEN De-xu,LI Zai-long.Cytological compar-isons between meristems form Juvenile and Adult Zones of pearseedlings[J].Plant Physiology Communications,1994,30(5):343-345.陈大明,沈德绪,李载龙.梨实生树童区和成年区顶端分生组织的细胞学研究[J].植物生理学通讯,1994,30(5):343-345.
• [4]CHEN Da-ming,LI Zai-long,SHEN De-xu.Cytological Compar-isons between leaves from Juvenile and Adult Zones of pear seedlings[J].Acta Phytophysiologica Sinica,1993,19(2):162-166.陈大明,李载龙,沈德绪.梨实生树不同发育区的叶片细胞学研究[J].植物生理学报,1993,19(2):162-166.
• [5]SHU Zhan,ZHANG Xiao-su,CHEN Juan,CHEN Gen-yun,XUDa-quan.The simplification of chlorophyll content measurement[J].Plant Physiology Communications,2010,46(4):399-402.舒展,张晓素,陈娟,陈根云,许大全.叶绿素含量测定的简化[J].植物生理学通讯,2010,46(4):399-402.
• [6]JIANG Gao-ming,HE Wei-ming.A quick new method for determin-ing light response curves of photosynthesis under field light condi-tions[J].Chinese Bulletin of Botany,1999,16(6):712-718蒋高明,何维明.一种在野外自然光照条件下快速测定光合作用—光响应曲线的新方法[J].植物学报,1999,16(6):712-718.
• [7]HOU Zhi-yong,HONG Wei,LI Jian,LIN Han,FAN Hai-lan,CHEN Can,WU Cheng-zhe.Study on light response curve of pho-tosynthesis of different eucalyptus clones[J].Journal of Fujian Collegeof Forestry,2009,29(2):97-102.侯智勇,洪伟,李键,林晗,范海兰,陈灿,吴承祯.不同桉树无性系光响应曲线研究[J].福建林学院学报,2009,29(2):97-102.
• [8]LUO Qing-hong,LI Zhi-jun,WU Wei-mo,HAN Lu.Comparativestudy of photosynthetic and chlorophyll fluorescence characteristicsof populus euphratica and P.pruinosa[J].Acta Bot Boreal-OccidentSin,2006,26(5):983-988.罗青红,李志军,伍维模,韩路.胡杨、灰叶胡杨光合及叶绿素荧光特性的比较研究[J].西北植物学报,2006,26(5):983-988.
• [9]CHEN Z H,WU F B,WANG X D,ZHANG G P.Heterosis in CMShybrids of cotton for photosynthetic and chlorophyⅡfuuorescenceparameters[J].Euphytica,2005,144:353-361.
• [10]DONG De-kun,SHI Kai,CAO Jia-shu.The photosynthetic hetero-sis and its mechanisms of an inter-subspecific hybrid between Bras-sica campestrip ssp.Chinensis and B.campestris ssp.Rapifera[J].Scientia Agricultura Sinica,2007,40(12):2804-2810.董德坤,师恺,曹家树.芸薹属两个亚种间杂种光合作用优势及其机理[J].中国农业科学,2007,40(12):2804-2810.
• [11]WANG Xue,SHI Guo-xin,XU Qin-song.Toxic effects of lan-thanum,cerium,chromium and zinc on potamogeton malaianus[J].Journal of The Chinese Rare Earth Society,2004,22(5):682-686.王学,施国新,徐勤松.镧、铈及重金属元素铬、锌对竹叶眼子菜的毒害作用[J].中国稀土学报,2004,22(5):682-686.