Dissertation > Excellent graduate degree dissertation topics show

Study on the Major Genes Plus Polygenes Mixed Inheritance of Yield and Panicle Traits in Rice

Author: OuHaiLong
Tutor: LiangKangZuo
School: Fujian Agriculture and Forestry University
Course: Crop Genetics and Breeding
Keywords: Rice yield and Panicle traits Recombinant inbred lines population Major genesplus polygenes mixed inheritance Genetic effect
CLC: S511
Type: Master's thesis
Year: 2005
Downloads: 170
Quote: 6
Read: Download Dissertation

Abstract


The construction of ideal panicle traits, optimization of the yield components and great improvement of the yield per plant are important research area in the breeding for super high yield variety of rice in recent year. In this paper, we genetically analyzed the 15 panicle traits by using the recombinant inbred lines population (RILs, F8) with 178 lines which is derived from IR24/FJCYD. The FJCD variety was bred by ourselves and has the characteristic of long panicle and big grain. The analysis method was based on the major genes plus polygenes mixed inheritance model of quantitative traits in plant. The results are showed below.The analysis on the major genes plus polygenes mixed inheritance model indicated that among the yield and yield components traits, grain weight per plant (GWPP) was controlled only by polygenes. Panicles number of per plant (PN), number of grains main panicle (NGMP),and rate of seed setting (RSS) were showed major genes inheritance. The linkage major genes had complementary, recessive-epistatic and additive-epistatic effect. Number of the spikelets of main panicle (NSMP) and 1000-grain weight (1000GW) were both controlled by major genes with additive and recessive effect and polygenes.As to panicle length (PL) and branch (TB), two pairs of major genes and polygenes worked in PL and length of second branch (LSB). The major genes were recessive-epistatic and complementary effect. Length of first branch (LFB) and number of second branch (NSB) were effected by major genes and polygenes. Number of first branch (NFB) was showed two pairs complementary major genes inheretance.Among grain traits, grain length (GL), and grain width (GW) were controlled by two major genes with recessive-epistatic and additive-epistatic effect. Three pairs of major genes with additive-epistasis played their roles in grain thickness (GT). Grain length/grain width (GL/GW) was controlled by major genes with additive-epistatic effect and polygenes.The analysis on the major genes plus polygenes mixed inheritance parameter showed that among the yield and yield components traits, no genetic parameter was found in GWPP. The heritability of the major genes controlled PN, NGMP and RSS were 54.17%, 81.05%, and 79.15% respectively, with 45.83%, 18.95% and 20.85% of environmental effects. The additive X additive-epistatic interaction effect of the major genes controlled NGMP was I*=1.5474. In NGMP, the major genes have additive effect of d_a=26.9425 and d_b=13.1825. There was d_a=0.1463 and d_b=0.0804 of additive effect, and 1—0.0803 of additive X additive-epistatic effect in the major genes controlled in RSS. The heritability of the major

Related Dissertations

  1. Study on Rice-Frog and Melon-Frog-fish Ecological Cultivation and Breeding Mode and the Nutrient Balance,S-0
  2. SCXC corporate culture construction,F270
  3. Monitoring of Insecticide Resistance and Resistance Risk Assessment for JS118 in the Rice Stem Borer, Chilo Suppressalis (Walker),S435.112.1
  4. Arthropod Diversity in Non-Crop Habitats at Margins of Paddy Fields of Different Types,S435.112
  5. Detection of the Resistance in Xanthomonas Oryzae PV. Oryzae and X. Oryzae PV. Oryzicola to Two Bactericides and the Assentment of Resistance Risk in Vitro,S435.111.4
  6. Study on Application of Red Yeast Rice in Fermented Sausage,TS251.65
  7. The Research on Improvement of Rice Noodles Quality,TS213.3
  8. Studies on the Properties of Starch from Germinated Polished-rice-with-germ,TS235.1
  9. The Research on the Comprehensive Modification Technology of Rice Protein Enzymatichydrolysis and Graft Copolymerization,TS201.2
  10. The Rice OsNAR2.1 Participates the Regulating Root Growth by Nitatre,S511
  11. Research on Feed Safety of Transgenic Rice in Broiler,S831.5
  12. Soil Eoclogical Risk Evaluation of Transgenic Bt Rice Through Nematode Community Analysis,S154.1
  13. Genetic Analysis and Molecular Mapping of QTL for Rice Black-Streaked Dwarf Disease Resistance in Rice,S511
  14. Detection of Exogenous Recombinan DNA of Transgenic Rice and Its Rice Product,S511
  15. Concentrations of Lipids in Grains of Japonica Rice: In Response to Nitrogen Fertilizer and in Relation to Physicochemical Properties of Rice Flour,S511.22
  16. Genetic Segregation Analysis and QTL Mapping as Well as Association Analysis for Panicle Angle Trait in Japonica Rice (Oryza Sativa L.),S511.22
  17. Functional Analysis of Two Rice Nitrate Transporter Genes OsNRT1.1a and OsNRT1.1b,S511
  18. Characteristics of Over-Expression for Nitrate Transporter Genes OsNRT1.2 and OsNRT1.5 in Rice,S511
  19. Research on Influnce of Silicon and Sulfur on Arsenic Uptake and Accumulation of Rice (Oryza Sativa L.),S511
  20. The Effectr of Lactic Acid Bacteria and Rice Bran on Dynamic Change of Rice Straw Silage Fermentation,S816.53
  21. Bioinformatics Study of Motifs Within 3’UTR Region of Stress Response Genes and Functional Related Mirnas in Rice,Q943.2

CLC: > Agricultural Sciences > Crop > Cereal crops > Rice
© 2012 www.DissertationTopic.Net  Mobile