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,2016,36(6):1125-1134
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犆狅狉犲犌犲狉犿狆犾犪狊犿犚犲狊狅狌狉犮犲狊犫狔犛犛犚
SHILei,WANGPing,YANGJing,WANGFengfeng,SUNXiaohua
(ColegeofAgronomy,InnerMongoliaAgriculturalUniversity,KeyLaboratoryofWildPeculiarVegetableGermplasmResource
andEnhancement,Hohhot010019,China)
犃犫狊狋狉犪犮狋:Thegeneticdiversityof50seedwatermelongermplasmfromdifferentplaceswereanalyzedby
SSRmolecularmarkerandtheprimarycorecolectionwasconstructedbyLeastDistanceStepwiseSam
pling(LDSS).Theresultsshowedthat:(1)31pairsofprimerswhichshowedhighpolymorphismwerese
lectedfrom106SSRprimers,showed115polymorphicbandsin138bandsowning83.33%polymorphic
loci,theaverageofShannoninformationindex(犐),Nei’sgeneticdiversity(犺),effectivenumberofaleles
(犖犲)andnumberofaleles(犖犪)byPOPGENE32analysiswas0.4193,0.2724,1.4580and1.9814,re
spectively,whichindicatedhighgeneticdiversityin50seedwatermelonaccessions.(2)Theclusteringre
sultshowedthatgeneticsimilaritycoefficientranged0.57-0.91.Somegermplasmsdistributedindiffer
entoriginsandfargeographicdistanceshowedhighgeneticsimilaritycoefficientin50accessions.(3)The
germplasmweresampledbythemethodofLDSSandratioat70%,60%,50%,40%,30%,20%and
10%,andthegeneticdiversityparametersofeachcoresubsetwascompared.Theresultsshowedthatthe
changeofgeneticdiversityparametersofeachcoresubsetwasnotclearwiththesamplesreducedinsix
samplings.Butthepercentageofpolymorphicloci,犖犲,犺and犐of10primaryaccessionswereobtainedby
samplingproportion20%.Itshowedthattheprimarycorecolectionfrom20%samplingcouldwelrepre
sentthegeneticdiversitiesofthewholecolection.
犓犲狔狑狅狉犱狊:seedwatermelon;SSRmolecularmarker;germplasmresources;geneticdiversity;corecolec
tion
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Table1 Accessionsofseedwatermelonandsourceofgermplasm
45
Code
xy
Accession
Type
uP
Sourceofgermplasm
M4
Introductionplace
1 î¹ Heifeng îvwBlackseedwatermelon ()InnerMongolia ()InnerMongolia
2 î^1Heidapian1 îvwBlackseedwatermelon ÃÄGansu ÃÄGansu
3 67,8 Haerkefu âQ!wwatermelon °ÎÏFormerSovietUnion A
4 Í!ïvShanxihongzi ïvwRedseedwatermelon Í!Shaanxi B
5 î9: Heibengjin âQ!w Watermelon ";Beijing B
6 î^2Heidapian2 îvwBlackseedwatermelon ÃÄ<=LanzhouGansu B
7 >?åwChifengdagua îvwBlackseedwatermelon ()InnerMongolia ()InnerMongolia
8 ZXG1110 ïvwRedseedwatermelon È~America B
9 (îNeimengheizhongpian îvwBlackseedwatermelon ()InnerMongolia ()InnerMongolia
10 AÅï(û)Xinjianghon(chang) ïvwRedseedwatermelon AÅXinjiang AÅXinjiang
11 ^%ïvw
(
ä@A
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igua(fangshewang)
ïvwRedseedwatermelon ÃÄ<=LanzhouGansu B
12 ï Hongzhongpian ïvwRedseedwatermelon ÃÄGanshu ÃÄGanshu
13 ïwm Hongguazi ïvwRedseedwatermelon ÉÊXingxia B
14 ÿî Mingguangheixiaopian îvwBlackseedwatermelon 7BAnhui 7BAnhui
15 ^%ïvw
(
CA
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(lvwang)
ïvwRedseedwatermelon ÃÄ<=LanzhouGansu B
16 R¦ïwmXindouhongguazi ïvwRedseedwatermelon Ë!D=Guangxihezhou Ë!D=Guangxihezhou
17 ¢óåw Huapidagua îvwBlackseedwatermelon ÌShandong A
18 ÃÄ^%15GansudabanNo.1 îvwBlackseedwatermelon ÃÄGansu B
19 wmw(ïE)Hongzigua(hongren) ïvwRedseedwatermelon ËÌGuangdong A
20 ZXG1263(1) vw Whiteseedwatermelon È~America B
21 ZXG1153 ïvwRedseedwatermelon È~America B
22 ïvwZhongpianhongzigua ïvwRedseedwatermelon îFGHuHeilongjiangtailai îFGHuHeilongjiangtailai
23 QI@JKTongliaoyiwofeng îvwBlackseedwatermelon ()InnerMongolia ()InnerMongolia
24 LMvwLangfangzigua îvwBlackseedwatermelon N"LM Heibeilangfang B
25 O=vwZhenzhouzigua îvwBlackseedwatermelon NÇO= He’nanzhenzhou B
26 ^%wmDabanguazi îvwBlackseedwatermelon ÃÄGansu B
27 ïwm Hongzigua ïvwRedseedwatermelon ÉÊXingxia A
28 AÅîXinjiangheixiaopian îvwBlackseedwatermelon AÅXinjiang AÅXinjiang
29 `vwYezigua `;vwWildseedwatermelon ËÌGuangdong ËÌGuangdong
30 PQvwDengkouzigua îvwBlackseedwatermelon ()InnerMongolia B
31 Róvw Hetaopizigua îvwBlackseedwatermelon ÃÄGansu B
32 SÝmvwJianyangyuezizigua îvwBlackseedwatermelon TT=FuzhouFujiang A
33 PI542120 `;vwWildseedwatermelon È~America È~America
34 GN1 îvwBlackseedwatermelon ÃÄGansu A
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36 b(83)Dianxin(83) îvwBlackseedwatermelon YZ<Ukraine A
37 wmw(îE)Guazigua(heiren) îvwBlackseedwatermelon ËÌGuangdong A
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Table1 Continued
45
Code
xy
Accession
Type
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Sourceofgermplasm
M4
Introductionplace
38 ^%25wmDabanNo.2guazi îvwBlackseedwatermelon ÃÄGansu A
39 <=^%15LanzhoudabanNo.1 îvwBlackseedwatermelon ÃÄGansu B
40 ïvw Hongzigua ïvwRedseedwatermelon °ÎÏFormerSovietUnion B
41 UVïvw
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42 G!R¹ïwmJiangxixinfenghongguazi
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43 ¢óvw Huapizigua îvwBlackseedwatermelon Í!Shaanxi B
44 ÉÊïvwNingxiahongzigua ïvwRedseedwatermelon ÉÊNingxia B
45 UVïvw
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46 [\^%15JingyuandabanNo.1 îvwBlackseedwatermelon ÃÄGansu B
47 <=^%Lanzhoudaban îvwBlackseedwatermelon <=Lanzhou A
48 UVïvw
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49 Avw15XinziguaNo.1 îvwBlackseedwatermelon AÅXinjiang AÅXinjiang
50 AÅïvwXinjianghongzigua ïvwRedseedwatermelon AÅXinjiang AÅXinjiang
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None:A.VegetableandFlowerResearchInstituteofChineseAcademyofAgriculturalSciences;B.Theplatformofwatermelonand
muskmelongermplasmresources(Henan,Zhengzhou)
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Fig.1 PCRproductsfromprimerP1(A)andP43(B)with50seedwatermelonaccessions
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Table2 SSRprimersandpolymorphismofPCRamplification
$
Primer
Sequence
Ρ°
No.ofbands
~¤ ¡
Polymorphibands
~¤ÉnPercentage
ofpolymorphicband/%
P1
F TCTGTGTGGATGCAAATGGT 6 5 83.33
R GCTAATCGAGCCCAGTTACG
P2
F TCAAAAGGTTTGCCCTAAATGAAA 5 2 40.00
R TGCTGATCTCCCATTCTTAACCTC
P4
F GCAAAGATTGTCTATGAAGCAGCA 4 4 100.00
R GCTCATTGGCTTCTTGAATCTGTT
P5
F TGCTTCAAAATCTATTCACAATTTGC 5 3 60.00
R TTCTTGGTTTCGGGTTTCTTTACA
P6
F AAACCATGATTTTACAGGGGATCA 3 3 100.00
R TTTCTGTCTTCTTTTGACCAATGC
P10
F TGGTTGAAATCAATAAAAAGTGAA 4 4 100.00
R TGGATGTTTTTGGCATTTGA
P11
F TTAGCCTAAGCAAGGGTTTTT 3 2 66.67
R AAGTACACATTTTAAACAATCAATCCA
P12
F TCAAACCGACTGCCATATCA 3 2 66.67
R AGCTTGTCTTCCTGGCCTTT
P13
F AAAATTACATCTTAAATGCGCC 4 4 100.00
R GGAACATTGACTTCAATCAGCA
P14
F TTCTTGAAACTCAACCCTCAAA 5 3 60.00
R AAAGCGTGTCGAGTGTGAGA
P15
F TGGATCATTTGACAGATTTAGCGA 4 4 100.00
R CATCACAGTTAACGATCACAAGGC
P19
F TGTTGAGATTCTTTGATTTCAACTGT 6 5 83.33
R TGGGTCAAAGTATTTTTGCTTTTT
P20
F ATGGTTCATTTTCACGTTCG 6 5 83.33
R AAAAATCAAGCAAAGAACAACAT
P21
F TTCCACACCAAGGAGGTAGG 4 4 100.00
R CATGTCATTCGATAAAGCAGAAA
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Table2 Continued
$
Primer
Sequence
Ρ°
No.ofbands
~¤ ¡
Polymorphibands
~¤ÉnPercentage
ofpolymorphicband/%
P24
F ATTTCTGGCCCCAGTGTAAG 6 6 100.00
R GAACAACGCAACCACGTATG
P25
F CCCTATTGCCTATTTTTCTCAA 6 5 83.33
R AAATTTGTGCTCTTCGTGGG
P29
F AGCAAATGCATGGGGAAAAC 3 3 100.00
R TGTTGAATGGAGGCTTTGAG
P30
F ATTTCTGGCCCCAGTGTAAG 5 5 100.00
R GAACAACGCAACCACGTATG
P32
F TCAATTCCAATCATCCATCC 3 3 100.00
R TAATGGCCGGACTTTATGC
P34
F GAGCAGGGGAGAAGGAAAAC 6 6 100.00
R CCAGTAGCTTTTTCCGATGC
P36
F TGCTCAATCCACCCTTCTC 6 5 83.33
R AAAAACAGCAACTCTCCCATC
P43
F CAGAGGAACGAGAGGGAGTG 4 4 100.00
R GGGGAGCCCATATTTTAACC
P47
F GCTTTGAAGTTTGTTTAATTTTAGTCC 3 2 66.67
R CGCCTCACGCTCTCTAAC
P52
F AATCTTCCCCATGCCAAAAC 4 3 75.00
R GACTTCCAAACCCTCCCTTC
P54
F AAAAATTTGAAAATTAGGTGAGGAG 3 2 66.67
R TTTTGACTAGGTGTACACTACCTTTG
P57
F CAAACAAAAACTTAGGAACTAGATTG 4 3 75.00
R TTAGCCATGAGGCGTGTACC
P75
F AGATGCCCCATTCAGTTTTG 6 6 100.00
R TTGAAGGAGAGAGGGAATGG
P81
F AGACAGGGAAATCGCAGAGA 2 2 100.00
R GGTTAAAGGACGTCGGGATT
P83
F TTGGGATGTAGATGTCCGGT 5 5 100.00
R TCCCCAATCCAACTCCCTAT
P94
F ATATGTGTGTCGTGTTCCGC 6 5 83.33
R CAGATTTCCGAGAGGGAAAA
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Table3 GeneticdiversityindexofcorecolectionofseedwatermelonbyLDSS
Sample
°
Sample
number
´µ-¶°
Observed
number
ofaleles
²³´µ-¶
°Effective
numberof
aleles
Neis~¯°
Neisgene
diversity
Shannons
R®¯°
Shannons
informationindex
~¤µb
Numberof
polymorphic
loci
~¤µbn
Percentageof
polymorphic
loci/%
°Beforesampling 50 1.9814±0.1438 1.4580±0.3571 0.2724±0.1737 0.4193±0.2237 138 100
1sampling1 35 1.9783±0.1464 1.4653±0.3468 0.2785±0.1685 0.4282±0.2175 135 97.83
2sampling2 30 1.9783±0.1464 1.4664±0.3428 0.2801±0.1656 0.4314±0.2125 135 97.83
3sampling3 25 1.9783±0.1464 1.4725±0.3387 0.2843±0.1627 0.4374±0.2085 135 97.83
4sampling4 20 1.9783±0.1464 1.4778±0.3270 0.2894±0.1568 0.4453±0.2002 135 97.83
5sampling5 15 1.9710±0.1684 1.4840±0.3227 0.2934±0.1539 0.4510±0.1960 134 97.10
6sampling6 10 1.9493±0.2202 1.4849±0.3104 0.2966±0.1471 0.4558±0.1895 131 94.93
7sampling7 5 1.8623±0.3458 1.4831±0.3238 0.2915±0.1611 0.4424±0.2192 119 86.23
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