弱光胁迫对番茄产量和不同生育期生理特性的影响  

Effects of Low Light Density Stress on Yield and Physiological Characteristics of Different Growth Stages of Tomato

作　　者：朱延姝[1] 冯辉[2] 高绍森[2] 

机构地区：[1]沈阳农业大学生物科技学院,沈阳110161 [2]沈阳农业大学园艺学院,沈阳110161

出　　处：《吉林农业大学学报》2005年第6期634-638,共5页Journal of Jilin Agricultural University

基　　金：国家"863"项目(2002AA207013);辽宁省教育厅资助项目(20040321)

摘　　要：以稳定遗传的4个番茄品系为试材,模拟弱光环境,研究了弱光胁迫对番茄产量及不同生育期生理特性的影响。结果表明:弱光使各品系坐果率、单果重和单株产量显著降低,品系1、2降低幅度低于品系3、4;各品系功能叶片的叶绿素含量在不同生育期均显著增高,尤其品系1、2的叶绿体b含量增加幅度更大;可溶性糖含量不同生育期均低于对照,其中品系4苗期可溶性糖相对值仅为对照的30%;植株发育前期可溶性蛋白含量下降,超氧化物歧化酶(SOD)、过氧化物酶(POD)或过氧化氢酶(CAT)活性增强,发育后期则相反,其中品系1、2在各生育期各指标的相对值均高于品系3、4(除POD外)。This experiment is to investigate effects of low light density stress on yield and physiological characteristics during different growth stages of 4 stable inheriting tomato strains by simulating low light environment. The result is that percentage of fruit setting, average fruit weight and average plant yield of 4 tomato strains decrease under low light stress, the decreased extent in strains 1 and 2 is lower than that in strains 3 and 4. In functional leaves at different tomato growth stages chlorophyll content, especially chlorophyll b of strains 1 and 2, increases, and soluble sugar decreases. The relative value of soluble sugar content in strain 4 at seedling stage is 30% of that of the control. Soluble protein decreases and SOD, POD（or CAT） activities increase at the earlier stages of growth, and they are the contrary at the later stages. The relative value of every index in strains 1 and 2 at different growth stages is higher than that in strains 3 and 4（POD excluded）.

关 键 词：弱光 番茄 产量 生理特性 

分 类 号：S641.2[农业科学—蔬菜学]