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A Study on the Phenotypic Diversity of Cynodon dactylon

狗牙根种质资源表型遗传多样性分析



全 文 :!23" !3#
 Vol.23  No.3
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犱狅犻:10.11733/j.issn.10070435.2015.03.018
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犃犛狋狌犱狔狅狀狋犺犲犘犺犲狀狅狋狔狆犻犮犇犻狏犲狉狊犻狋狔狅犳犆狔狀狅犱狅狀犱犪犮狋狔犾狅狀
ZHENGYiqi1,2,ZANGGuozhang1,LIYutian1,XUYanan1,
FUYao1,CHENJingbo2,LIUJianxiu2
(1.ForestryColegeofHenanUniversityofScienceandTechnology,Luoyang,HenanProvince471003,China;
2.InstituteofBotany,JiangsuProvinceandChineseAcademyofSciences,Nanjing,JiangsuProvince210014,China)
犃犫狊狋狉犪犮狋:Inordertoimprovetheutilizationefficiencyof犆.犱犪犮狋狔犾狅狀germplasm,thegeneticvariation,
charactercorrelationandprincipalcomponentof831犆.犱犪犮狋狔犾狅狀germplasmswerestudiedbasedoneleven
quantitativetraitsandfourqualitativetraits.Theresultsshowedthatabundantvariationexistedinthese
traitsandthecoefficientsofvariationofqualitativetraitswerehigherthanquantitativetraits.Therewere
greatdifferencesamongthediversityindexesofdifferenttraits,andthediversityindexesofquantitative
traitswerehigherthanqualitativetraits.Thevalueofvariationcoefficientofexoticpopulationwasthe
highestcomparedtoothersandthecoefficientsofvariationofpopulationfromnorthofChinawashigher
thanthatfromsouthofChina.Thediversityindexofmutantpopulationwasthehighest.Thediversityin
dexofdomesticpopulationwashigherthanexoticpopulationandthatofpopulationfromsouthofChina
washigherthanthatfromsouthofChina.Thereweresignificantcorrelationsamongsomemorphological
charactersof犆.犱犪犮狋狔犾狅狀accessions.Theaccumulativecontributionrateofthefirst6principalcompo
nentswas75.86% whichshowedthecontributionratewasdisperseandtheincreaseofaccumulativecon
tributionratewasnotsignificant.
犓犲狔狑狅狉犱狊:犆狔狀狅犱狅狀犱犪犮狋狔犾狅狀;Germplasm;Phenotypiccharacter;Geneticdiversity
EFGH
:20140521;IJGH:20140828
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Table1 Statisticanalysesofphenotypicdiversityinbermudagrass
ñ=
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CoefficientofVariation/%
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Shannondiversityindex
ÿ!K,h·eInternodelength/cm 3.94 13.35 1.33 1.38 34.96 3.2136
ÿ!K,h0¿Internodediameter/cm 0.88 2.30 0.30 0.22 25.18 4.2657
]¦ÑeTurfheight/cm 18.79 79.67 1.13 7.93 42.20 1.4165
2.·eLeaflength/cm 8.99 23.56 1.72 3.02 33.59 1.4266
2.³eLeafwidth/cm 2.22 6.76 0.85 0.48 21.80 3.1884
ñÌïÑeReproductivestemheight/cm 19.70 56.52 4.30 6.54 33.18 1.3832
ü·eInflorescencelength/cm 3.76 6.90 0.92 1.01 26.88 2.0589
BïGInflorescencebranchnumber/A 4.38 6.40 2.00 0.66 15.12 2.6393
4B·eSpikeletlength/cm 0.24 0.33 0.16 0.03 10.83 4.2813
4B³eSpikeletwidth/cm 0.09 0.15 0.06 0.09 10.01 3.5691
4BGSpikeletnumber/A 35.01 72.40 5.00 10.57 30.18 1.7925
2–Leafcolor 3.15 5.00 2.00 1.02 32.38 1.0957
ÿ!K–Stoloncolor 2.71 5.00 1.00 1.21 44.59 1.5454
2ýŽ] Hairofleafabdomen 1.40 5.00 1.00 1.42 101.73 0.8819
2FŽ] Hairofleafback 1.24 5.00 1.00 1.25 101.10 0.7988
uvð Mean - - - - 37.58 2.2718
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Table3 Correlationanalysesamongthemorphologicalcharacteristicsofbermudagrass
IL ID TH LL LW RSH IFL IBN SL SW SN LC SC HLA HLB
IL 1.000
ID 0.238 1.000
TH 0.493 0.017 1.000
LL 0.559 0.121 0.709 1.000
LW 0.396 0.569 0.298 0.441 1.000
RSH 0.256 0.009 0.421 0.345 0.151 1.000
IFL 0.092 0.083 0.226 0.207 0.138 0.666 1.000
IBN 0.243 0.133 0.272 0.321 0.207 0.498 0.428 1.000
SL 0.052 0.089 0.040 -0.017 0.154 0.267 0.349-0.071 1.000
SW 0.036 0.138 0.063 0.051 0.177 0.265 0.425 0.138 0.462 1.000
SN 0.036 0.057 0.205 0.191 0.095 0.529 0.839 0.425 0.131 0.378 1.000
LC 0.083 0.055 0.042 -0.013 0.067 0.041 0.009 0.033 -0.002 0.035 0.005 1.000
SC -0.097 0.135-0.207-0.243-0.021 -0.190-0.044-0.069-0.017 0.029-0.016 0.099 1.000
HLA 0.1940.1040.008 0.1250.1970.018 -0.105-0.049 0.051-0.018 -0.124 0.013-0.086 1.000
HLB 0.2100.1130.057 0.1430.2170.096-0.018 0.013 0.086 0.069-0.044-0.012-0.091 0.8011.000
  •:Ú+¬·œ‹(犘<0.05),Ú+¬·9œ‹(犘<0.01)
Note:significantcorrelationatthe0.05level,significantcorrelationatthe0.01level
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Table4 Eigenvectorsofleadingprincipalcomponent
ñ=
Characters
mnJPrincipalcomponent
1 2 3 4 5 6
ÿ!K,h·eInternodelength 0.547 0.482 -0.215 0.154 -0.100 0.131
ÿ!K,h0¿Internodediameter 0.290 0.283 0.323 0.651 0.079 -0.293
]¦ÑeTurfheight 0.639 0.224 -0.470 -0.031 -0.219 0.162
2.·eLeaflength 0.669 0.372 -0.417 0.014 -0.150 -0.001
2.³eLeafwidth 0.528 0.433 0.165 0.472 -0.090 -0.167
ñÌïÑeReproductivestemheight 0.756 -0.257 -0.046 -0.249 0.085 0.082
ü·eInflorescencelength 0.724 -0.535 0.171 -0.100 0.120 -0.044
BïGInflorescencebranchnumber 0.602 -0.155 -0.212 0.039 0.452 -0.150
4B·eSpikeletlength 0.314 -0.190 0.549 -0.044 -0.578 0.170
4B³eSpikeletwidth 0.436 -0.313 0.506 0.057 -0.290 0.080
4BGSpikeletnumber 0.643 -0.537 0.083 -0.078 0.268 -0.102
2–Leafcolor 0.060 0.033 0.047 0.269 0.268 0.870
ÿ!K–Stoloncolor -0.203 -0.135 0.279 0.497 0.324 0.098
2ýŽ] Hairofleafabdomen 0.129 0.665 0.452 -0.421 0.240 0.026
2FŽ] Hairofleafback 0.219 0.610 0.477 -0.438 0.236 0.001
HIðEigenvalue 3.788 2.321 1.724 1.445 1.101 1.000
äåæ
Contributivepercentage/%
25.25 15.47 11.49 9.63 7.34 6.67
çäåæ
Cumulativecontributivepercentage/%
25.25 40.73 52.22 61.85 69.19 75.86
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265
!3# ˜øù:>sˆ`ÀÀ?+bãäøFñJK
žŸ>?
[1] ÃՏ,.)¦,.W.͸>sˆ`ÀÀ?Mò—RQM
òab^J
[J].]÷.¸,2003,12(6):99104
[2] ÃՏ,7!,ÃՂ.X‚4@>sˆCUMò—RÎ|
IÌÍ
[M]//8¸]4-.5“.„À:8¸®÷à.qÁ
Â
,1999:504509
[3] ÃՏ,7!,ÃՂ,.X‚4@>sˆMòJaQ|Ç
¤ïð
[J].ž&À?¶(,1996,15(3):1822
[4] –4@,–®Ã.0T@Bñ>sˆMòøFñÌÍ[J].]û
¶]Ç
,2006(3):3538
[5] 3ú,Ãí,–®Ã,.¦,4@Bñ>sˆMòãäøFñ
ÌÍ
[J].Z„®÷-.,2011,50(22):46744677,4681
[6] c¡,Š‡«,ø|,.XT4@Bñ>sˆž&.Mò
HI—RÌÍ
[J].]÷.¸,2010,19(5):210217
[7] –?>,<‹:¦,3"m.®‚Bñ>sˆMòøFñÌÍ
[J].®‚®÷à..¸,2011,34(1):611
[8] c¡,ø|,Ò·´,.475ß>sˆ`ÀÀ?MòøF
ñIÌÍ
[J].]÷.¸,2012,21(4):3242
[9] -‰),.)¦,ÃՏ,.>sˆrs‹—¢ÚCUñ=—
RJK
[J].]÷.¸,2005,14(6):107111
[10]Ù[,–[Æ,3[›,.0%`ÀÀ?mVñ=I+bø

[J].0„®W-„à..¸(_ö-.Á),2013,41(8):
155160
[11]7.,›•Ò.a;`ÀÀ?Mò{ÁãäøFñJK[J].
ž&ãäÀ?.¸
,2011,12(1):4248
[12]Ð/,¬W,i£0,.!†]T™+bøFñÌÍ[J].0
„ž&.¸
,2007,27(11):22222227
[13]3_ˆ,–¯q,N&Ó,.«T¿`ÀÀ?+bãäøFñ
IÌÍ
[J].x&.¸,2001,27(6):832837
[14]–u,1íÄ,‰’2,.UJ$ÖО&Mòñ=IøF
ñJK
[J].TÀ®÷à..¸,2009,32(4):4752
[15]ÏÕ1,§É›.0%`ÀÀ?mVž&.ñ=IãäøFñ
Q¬·ñJK
[J].ž&ãäÀ?.¸,2012,13(1):1115,21
[16]~ñˆ,¬ˆ˜,Ó¸n,.&L`ÀÀ?™2+bøFñ
ÌÍ
[J].0„ž&.¸,2008,28(8):15731579
[17]U¯3,§¯®.ÌÍãäøFñI2?û5jÖ³[M].„
À

8¸-.„…qÁÂ
,1994:117122
[18]TilmanD.Theecologicalconsequencesofchangesinbiodiver
sity:Asearchforgeneralprinciples[J].Ecology,1999,80
(5):14551474
[19]§Ò²,4Œj,—1™,.‹Œà´L»`™+bøFñÌ
Í
[C]//–¨Â.8¸†9–¯ÌÍ5“(2012).„À:8¸
W÷qÁÂ
,2012:145150
[20]µµ:,J1®,–?²,.Áñ=ImnJJK[J].0„
W./.¸
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[21]‰™•,Š«,ÑÒ&,.à)`ÀÍ"j»Àñ=ImnJ
laJK¶³~ï
[J].ž&ãäÀ?.¸,2012,13(3):
429434
[22]Ô?b,뗕,§n{,.*a`Àa“»Àñ=øFñJ
K
[J].–¯.¸,2011,38(5):840848
[23]§››,§ÕX,¬Â5,.l%л`À?IG"JaÌÍ
[J].–¯.¸,2009,36(5):701710

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