Dissertation > Excellent graduate degree dissertation topics show

Distant Cross-breeding in Tree Peony and Identification of Some Hybrids by AFLP

Author: ZhangDong
Tutor: ChengFangYun
School: Beijing Forestry University
Course: Ornamental Plants and Horticulture
Keywords: Tree peony Distant hybridization AFLP
CLC: S685.11
Type: Master's thesis
Year: 2008
Downloads: 325
Quote: 10
Read: Download Dissertation

Abstract


The tree peony is one of the world famous flowers. For a long time, the improvement of varieties and breeding work have been the main content of peony research and production. Distant cross-breeding of tree peony is a main method of cultivar improvement at present and for quite a long time in the future. Further more, the cross-combination with better compatibility is the key factor of success in distant cross-breeding of tree peony. In this study, some cultivars and species of tree and hebaceous peonies were selected as parents which, with good traits, were fertile in various cross-combinations and some of hybrids seedlings were identificated by AFLP(Amplified Fragment Length Polymorphism). Selecting the cross-combinations with better compatibility would provide effective way to overcome the incompatibility of distant cross-breeding in tree peony, and some hybrids gained from the study also would provide the probability to achieve the goals such as extending flowering period, reblooming a year and rich color. The main results are as follows:1. The experiment of distant hybridization had been conducted with 29 cultivars or species, including intersubsectional hybridization in Sect. Moutan and intersectional hybridization between Sect. Moutan and Sect. Paeon. The crossing experiment with 1084 flowers and 48 cross-combinations produced 1715 seeds, from which 534 seedlings were got in the following year. Setting percentage varied with different cross-combinations. In most cases, the crosses with herbaceous peony 1# , 2# and P.veitchii as female parent and‘Golden Era’,‘Souvenir de MaxineCornu’,‘Renown’and‘Viking Full Moon’as male parent had a higher setting percentage and could overcome the incompatibility of distant cross-breeding between Sect. Moutan and Sect. Paeon. The setting percentage was higher between P.ostii‘Fen Dan Bai’בHigh Noon’, P.rockiiבHigh Noon’, as a result, the incompatibility of distant cross-breeding in intersubsectional hybridization of Sect. Moutan was overcomed. 2. The molecule identification of 22 offspring from the cross-combinations P.rockiiבHigh Noon’by AFLP showed that most offspring were real and mother-closed hybrids. The offspring had different AFLP bands from their parent which meaned that the offsping not only inherited the characteristics of parents, but also had new variation.3. The compatibility of P.rockiiבHigh Noon’was higher and most offspring produced by the combination were real hybrids identified by AFLP. Consequently, this cross-combination had more potential and could be adopted widely in the breeding of tree peony.

Related Dissertations

  1. Development of EST-SSR Primers and Application in Analysis of Genetic Realtionships in Tree Peony,S685.11
  2. Genetic Diversity Analyses of Sillago Sihama Using AFLP Marker,S917.4
  3. The cDNA-AFLP Analysis of Gene Differential Expression and RNA Editing of ATP6 Gene between Cytoplasmic Male Sterile Lines and Their Maintainer Lines in Soybean (Glycine max (L.) Merrill),S565.1
  4. Studies on Cytoplasmic Male Sterility and Restoration in Cotton (Gossypium Hirsutum L.),S562
  5. Screening of Markers Related to TYLCV Resistance and Research on Pyramiding Resistance in Marker-Assisted Selection in Tomato,S641.2
  6. Development of SSR and AFLP Markers about Panax Ginseng,S567.51
  7. Flanking Sequences of Maize DNA in the Study of Rice Mutant,S511
  8. AFLP Analysis of Rice with Aerial-Root and High-Pole,S511
  9. AFLP Analysis on Genetic Diversity of Larix Principis-rupprechtii Mayr. In Shanxi,S791.22
  10. Octagonal phenotypic diversity and germplasm research AFLP,S573.9
  11. Construction of AFLP-based Genetic Linkage Map of Sea Cucumber (Apostichopus Japonicus),S968.9
  12. Genetic Diversity and Differentiation of Fenneropenaeus Penicillatus in the Southeastern Coast of China,S917.4
  13. AFLP Analysis of Genetic Polymorphismin Kazak、Aletai Bashibai of Indigenous Sheep Breeds in Xinjiang,S826
  14. Construction of the Molecular Genetic Linkage Map for Betula Luminifera,S792.159
  15. Study of Population Structure and Diversity in Carya Cathayensis Sarg,S664.1
  16. Gene Clone in Carya Cathayensis Grafting,S664.1
  17. Research and Evaluation of Biological Characteristics and Genetic Diversity of Coix (Coix Lacryma-jobi L.Var.Ma-yuen Stapf) and Prunella (Prunella Vdgaris Linn.) Germplasm,S567.239
  18. cDNA-AFLP Based Transcript Profiling Analysis for Methyl Jasmonate Treated Adventitious Roots of Panax Notoginseng,S567.236
  19. AFLP Screening of the Differential Probiotic Genes of Lactic Acid Bacteria,R371
  20. Evaluating Population Genetics of Important Economic Marine Organism Coelomactra Antiquate (Spengler),S917.4
  21. Screening and Preliminary Analysis of Differentially Expressed Genes in the Latex of Super-high-yielding Rubber Tree Compared with Its Average Counterparts,S794.1

CLC: > Agricultural Sciences > Gardening > Ornamental Horticulture ( flowers and ornamental trees) > Flower trees in class > Peony
© 2012 www.DissertationTopic.Net  Mobile