全 文 :!23" !5#
Vol.23 No.5
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ACTA AGRESTIA SINICA
2015$ 9%
Sep. 2015
犱狅犻:10.11733/j.issn.10070435.2015.05.014
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犌犲狉犿犻狀犪狋犻狅狀犚犲狊狆狅狀狊犲狊狅犳犇犻犳犳犲狉犲狀狋犕犪狋狌狉犻狋狔犔犲狔犿狌狊犮犺犻狀犲狀狊犻狊
犛犲犲犱狊狋狅犛犪犾狋犛狋狉犲狊狊犻狀犛狅狀犵狀犲狀犌狉犪狊狊犾犪狀犱
LINJixiang1,CAOMing2,QIMingming1,MUChunsheng2,WANGYing3,LINLidong4
(1.AlkaliSoilNaturalEnvironmentalScienceCenter,NortheastForestryUniversity,KeyLaboratoryofSalinealkaliVegetationEcology
RestorationinOilField,Ministryofeducation,Harbin,HeilongjiangProvince150040,China;2.KeyLaboratoryofVegetationEcologyof
MinistryofEducation,InstituteofGrasslandScience,NortheastNormalUniversity,Changchun,JilinProvince130024,China;3.Key
LaboratoryofSongliaoAquaticEnvironment,MinistryofEducation,JilinJianzhuUniversity,Changchun,JilinProvince130118,China;
4.DongtouFisheriesScienceandTechnologyResearchInstitute,Wenzhou,ZhejiangProvince325700,China)
犃犫狊狋狉犪犮狋:犔犲狔犿狌狊犮犺犻狀犲狀狊犻狊 (Trin.)Tzvel.isaperennialrhizomatousforagegrassspeciesofPoaceae,
whichisalsothedominantgrassspeciesinSongnenSaltalkaliGrasslandofNorthernChina.Duetothe
factthatnoinformationexistedconcerningthegerminationresponsesofdifferentmaturity犔犲狔犿狌狊犮犺犻狀犲狀
狊犻狊seeds,fourkindsofsaltstressconcentration(50,100,200,400mM)weredesignedhereinorderto
investigatedtheecologicalresponsesofdifferentmaturity犔犲狔犿狌狊犮犺犻狀犲狀狊犻狊seeds(24,29,34and39days
afterblooming)onthesaltstress.Resultsshowedthatthegerminationresponsesof犔犲狔犿狌狊犮犺犻狀犲狀狊犻狊
seedstosaltstressgreatlydifferedfromdifferentmaturationtimes.Seedsat39daysafterbloominghad
thehighestvigorandthebestquality.Thegerminationpercentage,germinationenergy,recoverypercent
ageandtotalgerminationpercentageweresuperiortoothers.Inaddition,thegerminationrecoveryper
centageoftheseedbeforegerminationtreatedbysalinitystressincreasescomparedwithnotreated.This
maybeanadaptivestrategyofseedgerminationtosaltstress,beingastateofdormancytoescapefromthe
rigorousenvironment.Theresearchcanprovidescientificbasisforseeddevelopmentandstresstolerance
science.
犓犲狔狑狅狉犱狊:犔犲狔犿狌狊犮犺犻狀犲狀狊犻狊seed;Maturity;Saltstress;Germinationrecoverypercentage
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ÈÅÆ Authorforcorrespondence,Email:mucs821@gmail.com
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Table1 Effectsofseedmaturationtime,salinestressandtheinteractionsongerminationindex
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Seedmaturationtime(M)
ÿ`a
Salinity(S)
á$¨×ÿ`a
M ×S
@*5
Germination
®ë¨df 3 4 12
N MS 1924.4 6766.9 53.6
犉 õ犉ratio 133.2 468.5 3.7
@*ä
Germinationrate
®ë¨df 3 4 12
N MS 1896.9 3606.0 137.9
犉 õ犉ratio 445.4 846.6 32.4
M²5
Germinationrecovery
®ë¨df 3 3 9
N MS 639.1 1948.9 36.8
犉 õ犉ratio 61.8 188.4 3.6
`@*5
Totalgermination
®ë¨df 3 4 12
N MS 170.8 32.4 4.1
犉 õ犉ratio 213.6 40.4 5.1
ò:Pó犘<0.001
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Table2 Germinationsituationsof犔犲狔犿狌狊犮犺犻狀犲狀狊犻狊seedsindifferentmaturationtimesundersalinestress
á$¨
Maturationtime
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Salinity/mM
@*«¬ Germinationindex/%
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Initialgermination
M²5
Germinationrecovery
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Totalgermination
0 61.1±1.1a — 61.1±1.1a
50 41.1±4.0b 15.2±2.0a 50.0±3.8b
24d 100 17.8±3.0c 25.6±1.9b 38.9±1.1c
200 15.6±2.3c 36.9±1.2c 46.7±1.9b
400 1.1±1.1d 50.6±2.0d 51.1±2.2b
0 68.9±1.1a — 68.9±1.1a
50 48.9±1.2b 30.4±1.9a 64.4±1.1b
29d 100 27.8±2.2c 33.8±2.8a 52.2±2.2d
200 20.0±3.3d 45.8±1.2b 56.7±1.9cd
400 7.8±2.2e 55.4±0.1c 58.9±1.1c
0 72.2±2.2a — 72.2±2.2a
50 58.9±2.4b 32.2±3.3a 72.0±1.1a
34d 100 37.8±2.4c 35.7±1.6a 60.0±1.9b
200 28.9±1.1d 43.8±2.0b 60.0±1.6b
400 8.9±1.2e 57.3±1.1c 61.1±1.1b
0 82.2±1.1a — 82.2±1.1a
50 64.4±2.2b 31.1±1.1a 75.5±1.9bc
39d 100 57.8±1.1b 50.0±2.2b 78.8±1.6ab
200 45.6±1.1c 53.1±1.8b 74.4±1.9c
400 20.0±3.8d 65.2±0.9c 72.2±1.9c
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Note:Differentlettersindicatesignificantdifferencesamongdifferentsalinityconcentrations(犘<0.05)
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u>?
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