谷子杂交种灌浆期光合性能研究  

Study on Photosynthetic Performance of Millet Hybrids at Grain-filling Stage

作　　者：樊修武[1] 池宝亮[2] 张冬梅[2] 黄学芳[2] 张伟[2] 

机构地区：[1]山西省农业科学院作物科学研究所,山西太原030032 [2]山西省农业科学院旱地农业研究中心,山西太原030006

出　　处：《山西农业科学》2011年第3期227-229,共3页Journal of Shanxi Agricultural Sciences

基　　金：国家科技支撑计划项目(2007BAD88B03)

摘　　要：运用CB-1102便携式光合蒸腾仪,研究了谷子杂交种和常规种的光合面积、光合速率(Pn)日变化、光饱和点及叶片水分效率(WUE)。结果表明,杂交种与常规种相比较,叶面积系数(LAI)增加51.1%,光合速率提高65.0%;旗叶光饱和点提高54μmol(/m2.s),补偿点降低117μmol(/m2.s);旗叶和倒二叶WUE分别提高30.86%和21.30%;杂交种未出现明显的"午休"现象。Using CB-1102 Portable Photosynthesis System, photosynthetic area, diurnal variation of photosynthetic rate （Pn）, light saturation point and leaf water use efficiency （WUE） in hybrid and ordinary millets were studied. The results showed that compared with the common millet, there was no obvious photosynthesis nap in hybrid millet, and millet hybrid＇ s leaf area index （ LAI ） increased by 51.1%; photosynthetie rate （ Pn ） 65.0% in average, flag leaf light saturation point 54 umol/ （ m2· s ） and light compensation point decreased by 117 umol/ （m2·s）, WUE of flag leaf and second leaf increased by 30.86% and 21.30%, respectively.

关 键 词：谷子 杂交种 光合性能 灌浆期 

分 类 号：S515.01[农业科学—作物学]