| Autor: |
XIAO He, WANG Meng, CUI Lijie, KAI Guoyin, PAN Jingxian |
| Jazyk: |
angličtina |
| Rok vydání: |
2015 |
| Předmět: |
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| Zdroj: |
Journal of Shanghai Normal University (Natural Sciences), Vol 44, Iss 6, Pp 585-592 (2015) |
| ISSN: |
1000-5137 |
| Popis: |
The genetic diversity of 24 accessions of pakchoi(Brassica campestris L. ssp. chinensis (L.) Makino var. communis Tsee et Lee.) from different districts of China was identified by morphological characters and RAPD analysis.The results showed that the coefficient of variation of 13 morphological characters of materials was from 12.4% to 69.9%,the most was petiole length,and the least cotyledon.24 accessions were clustered into 4 groups at the distance of 5 in morphological cluster.113 bands were detecteded by15 RAPD primers,and 83 were polymorphic.The percentage of polymorphic bands was 73.4%,and the number of average and polymorphic bands each primer were 7.53 and 5.53 respectively.In RAPD analysis,8 groups at the genetic distance of 0.77 were obtained based on RAPD data.There were the overlaps and segmentation between the results of RAPD and morphological cluster.Nei′s diversity (H)and Shannon information index (I) based on 4 types of morphological analysis were both the order of Ⅳ>Ⅰ>Ⅲ>Ⅱ,and H and I of Ⅳ were 0.2395 and 0.3523 respectively.H and I of Jianghui area were the highest in China,being 0.2076 and 0.3098 respectively.These data were in accordance with the diversity characteristics and rejoin distribution of pakchoi germplasms. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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