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1、第25卷第4期塔里木大學(xué)學(xué)報(bào)V0l_25NO.42013年12月JoumalofTarimUniversityDec.2013文章編號:1009—0568(2013)04—0057—07不同物候期苦馬豆生殖構(gòu)件及生殖分配的研究周小玲,蔣慧,席琳喬尚可為馬新娥馬春暉(1塔里木大學(xué)動物科學(xué)學(xué)院,新疆阿拉爾843300)(2新疆生產(chǎn)建設(shè)兵團(tuán)塔里木畜牧科技重點(diǎn)實(shí)驗(yàn)室,新疆阿拉爾843300)摘要通過對塔克拉瑪干沙漠外緣綠洲區(qū)中苦馬豆種群地上部分各構(gòu)件數(shù)量、生物量、能值和營養(yǎng)成分的測定,旨在揭示不同物候期苦馬豆種群生殖構(gòu)件特征及生殖分配規(guī)律。結(jié)果表明:(1)隨物候期的變化,苦馬豆生
2、殖分配逐漸升高,在成熟期達(dá)到最高(40.75%);葉和莖生物量分配都隨物候期而降低。(2)營養(yǎng)構(gòu)件數(shù)量特征的表型可塑性普遍低于生殖分配,生殖分配表形可塑性隨物候期而逐漸下降。(3)生殖構(gòu)件各性狀與其相關(guān)性狀呈現(xiàn)出線性和冪函數(shù)正相關(guān)關(guān)系,其中以線性關(guān)系為主。(4)花(莢果)中能值和營養(yǎng)元素分配都隨物候期而增加,在成熟期后占主要比例。總體上,苦馬豆有性生殖構(gòu)件中生物量、能值和營養(yǎng)物質(zhì)分配是隨著物候期而增加的,與營養(yǎng)構(gòu)件間存在相互競爭和促進(jìn)的關(guān)系。關(guān)鍵詞苦馬豆;生殖構(gòu)件;生殖分配;物候期;生物量;能值;營養(yǎng)元素中圖分類號:Q948.12文獻(xiàn)標(biāo)識碼:ADOI:10.3969/j.
3、issn.1009—0568.2013.04.011ResearchonReproductiveModuleandReproductiveAllocationofSwainsonine[Sphaerophysasalsula(Pal1)DC.]inDifferentPhenologicalStagesZhouXiaoling,JiangHui,XiLinqiao,ShangKeweiMaXineMaChunhui,(1CollegeofAnimalScience,TarimUniversity,Alar,Xinjiang843300)(2KeyLaboratoryofTa
4、rimAnimalHusbandryScienceandTechnology,XinjiangProduction&ConstructionGroup,Alar,Xinjiang843300)AbstractOurobjectivewastostudythereproductivemoduletraitsandreproductiveallocationpatternofSphaerophysasalsula(Pal1.)DCindifferentphenologicalstages.IntheoasisaroundTaklimakandesert,wecollected
5、theabovegroundbiomassofS.salsulainthebuddingstage,floweringstage,poddingstage,maturitystagerespectively,andanalyseditsqualitativetraits,thecontentofdrymatter,energy,N,PandKofdifferentmodules.Theresultsshowedthat:(1)Withthechangeofphonologicalstage,thereproductiveallocationofbiomassincreas
6、edgradually,andthemaximumexistedinthematurestage(40.75%);whileinleafandstemtheyde-clined.(2)Thephenotypicplasticityofvegetativemodulesweregenerallylowerthanthatofreproductivemodules,thelatterdecreasedwiththephonolo~calstage.(3)Thecharactersofreproductivemodulesanditsconcernedcharacterssho
7、wedpositivelinearorpowercorrelation,andthepredominantcorrelationWaslinear.(4)Theallocationofenergyandnutritiveelementinflowe~(pods)werein—creasedwiththephonologicalstage,andshoweddominantproportioninthematuritystage.Totally,theallocationofbiomass,energyandnutritivee