有机锗对大蒜幼苗生长发育和光合特性的影响  

Effects of Germanium on Growth and Development and Photosynthetic Characteristics of Garlic

作　　者：隋静[1] 郑伟[1] 李伟 郝树芹[1] SUI Jing ZHENG Wei LI Wei HAO Shuqin(Laiwu Vocational and Technical College,Laiwu,Shandong 271100 Administration Bureau of Gardens in Laiwu,Laiwu,Shandong 271100)

机构地区：[1]莱芜职业技术学院,山东莱芜271100 [2]莱芜市园林管理局,山东莱芜271100

出　　处：《北方园艺》2017年第9期34-37,共4页Northern Horticulture

基　　金：山东省自然科学基金青年基金资助项目(ZR2013CQ003)

摘　　要：以"金蒜2号"大蒜为试材,采用盆栽试验,通过叶面喷施浓度为0.30、0.60、0.90g·L^(-1)的有机锗(Ge-132)溶液,以喷施等量蒸馏水为对照,研究了有机锗对大蒜幼苗生长发育和叶片光合性能的影响。结果表明:在有机锗浓度为0.30~0.60g·L^(-1)范围内,大蒜幼苗株高、假茎粗、叶面积和根系活力等生长指标均随有机锗浓度的升高而升高,当有机锗浓度升高至0.90g·L^(-1),各生长指标值则显著下降;在0.60g·L^(-1)浓度下达到最大,比对照组分别升高了1.6%、5.3%、2.0%和20.0%;叶片内光合色素含量、净光合速率、蒸腾速率和气孔导度也随有机锗浓度升高呈先上升后下降的趋势,在0.60g·L^(-1)浓度时达到最大,其中,净光合速率、蒸腾速率和气孔导度分别比对照升高了40%、38%和36%;因此,外喷0.60g·L^(-1)有机锗是促进栽培大蒜的生长发育并提高光合效率的最适浓度。The cultivar‘Jinsuan 2＇garlic seedlings in pots were used as materials and were sprayed by germanium solution at the concentration of 0.30,0.60,0.90g·L-1.Effects of germanium on growth and development and photosynthetic characteristics of garlic were studied,with spraying distilled water as control.The results showed that the plant height,pseudostem diameter,leaf area and root activity of garlic increased with the increasing of germanium concentrations when the germanium concentrations were in the range of 0.30-0.60g·L-1.When the concentration increased to 0.90g·L-1,they were significantly decreased.These growth index reached the highest level at 0.60g·L-1 treatment,which was increased by 1.6%,5.3%,2.0% and 20.0% relative to control group.At the same time,the chlorophyll and carotenoid contents,net photosynthetic rate,transpiration rate and stomatal conductance in garlic leaves were also improved with the increase of germanium concentrations ranging from 0.30g·L-1to 0.60g·L-1 and then decreased when the concentration continued increasing.These indexes all reached the highest levels at 0.60g·L-1.The net photosynthetic rate,transpiration rate and stomatal conductance was increased by 40%,38% and 36% relative to control group.The results indicated that the0.60g·L-1 germanium was the best concentration for the garlic growth and photosynthesis.

关 键 词：有机锗 大蒜 光合作用 生长 叶绿素 

分 类 号：S663.404.3[农业科学—果树学]