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1、新疆農(nóng)業(yè)科學2013,50(11):2015—2022XinjiangAgricuhuralSciencesdoi:10.6048/j.issn.1001—4330.2013.11.008不同基因型花生品種根系形態(tài)差異的研究康濤r,戴良香,符方平,李美4,丁紅,慈敦偉,張智猛,石書兵(1.新疆農(nóng)業(yè)大學農(nóng)學院,鳥魯木齊830056;2.山東省花生研究所,山東青島266100;3.湖南農(nóng)業(yè)大學農(nóng)學院長沙410128;4山東省東營市農(nóng)業(yè)局,山東東營257000)摘要:【目的】明確不同基因型花生品種根系形態(tài)發(fā)育特征和根系生長發(fā)育規(guī)律?!痉椒ā坎捎猛林耘喾ǎ芯坎煌蛐突?/p>
2、生品種不同生育期、不同土層根系形態(tài)發(fā)育特征及其差異。【結(jié)果】兩品種單株總根長、根系總生物量、根系總體積、根系總表面積均隨生育進程呈先增后減的“拋物線”型變化趨勢,根系總生物量在播種后46d達最大值,而單株總根長、根系總體積、根系總表面積峰值則滯后到播種后68d。兩品種0~2Ocm、20—40cm土層中根系生物量均表現(xiàn)先增加后減小的變化趨勢,40—100cm土層則隨生育進程呈漸增趨勢。唐科8在各生育時期單株總根長、根系總生物量、根系總體積、根系總表面積均大于花育23,在播種后68d達峰值時,唐科8的根系總體積、單株總根長是花育23的1.66、1.65倍,4O~100c
3、m土層根系生物量增加速率大于花育23?!窘Y(jié)論】唐科8品種根系發(fā)達,具有較強的吸收水分、養(yǎng)分及抗逆能力;唐科8比花育23有更好的根系空間分布。關(guān)鍵詞:花生;根系形態(tài);不同基因型;不同土層;不同生育期;根系中圖分類號:S565.2文獻標識碼:A文章編號:1001—4330(2013)11—2015—08DifferencesinRootMorphologyofPeanutVarietieswithDifferentGenotypesKANGTao一,DAILiang—xiang,F(xiàn)UFang—pin,LIMei,DINGHong,CIDun—wei,ZHANGZhi—m
4、eng,SHIShu—bing(1.CollegeofAgronomy,XinjiangAgriculturalUniversity,Urumqi830052,China;2.PeanutResearchIns~tuteofShandongProvince,QingdaoShandong266100,China;3.CollegeofAgronomy,HunanAgricul—turalUniversity,Changsha410128,China;4.DongyingMunicipalBureauofAgriculture,ShandongProv—ince,Do
5、ngyingShandong257091,China)Abstract:【Objective】Thepurposeofthisstudywastoclarifydiferentgenotypesofpeanutvarietiesrootmorphologicaldevelopmentcharacteristicsandrootgrowthanddevelopment.【Method】Thedifferencesofthediferentlayersofrootmorphologyatdiferentgrowthstageswithtwogenotypesofpean
6、utvarietieswerestudiedwithsoilcolumncultivationmethod.【Result】Thedynamicofrootlength,biomass,volume,surfaceareaperplantoftwovarietieswasincreasedandthendecreasedlike”parabolic”curveasthegrowthperiodproceeded,thetotalrootbiomassreachedamaximumat46daftersowing,andforthetotalrootlength,to
7、talrootvolume,rootsurfaceareaperplantwasdelayedto68daftersowing.Therootbiomassoftwovarietiesin0—20am。20—40cmsoillayerswasincreasedandthendecreased。theygraduallyincreasedin40—100cmsoillayerwith收稿日期:2013—04—22基金項目:青島市科技支撐計劃項目(11—2—3—38一nsh);山東省現(xiàn)代農(nóng)業(yè)產(chǎn)業(yè)技術(shù)體系花生創(chuàng)新團隊崗位專家體系項目作者簡介:康濤(1986一),男,山