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 หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Genetic Analysis of some Important Seed Yield Related Traits in Kenaf (Hibiscus cannabinus L.)) ผู้เขียน: Md. Golam Mostofa, Lutfur Rahman, Ranjit Kumar Ghosh สื่อสิ่งพิมพ์:pdf AbstractGenetic analyses for the days to first flowering, the number of fruits per plant, the number of seeds per fruit and the 1,000 seed-weight were carried out using six-parents half diallel crosses in kenaf to determine the inheritance pattern and genetic behavior of these characters. Hayman’s analysis of variance and components of variations related to gene actions indicated the involvement of both additive and dominance effects for all the traits, but the value of additive (D) and dominance (H1) of (H1/D)? indicated predominant additive effects for the days to first flowering (0.91) and 1,000 seed-weight (0.81), while there were dominance effects for the number of fruits per plant (28.35) and the number of seeds per fruit (2.58). Variance and covariance graphs revealed a partial dominance for all the traits except the number of seeds per fruit which showed over-dominance. Parents Acc.5030, Acc.4197 and Acc.2922 possessed the most recessive genes, while parents Acc.4659 and Acc.2731 had maximum dominant alleles for all the studied traits. The value of heritability in the narrow sense (h2 ns) was comparatively high for the days to first flowering (0.59) and 1,000 seed-weight (0.56), but it was low for the number of seeds per fruit (0.09) and the number of fruits per plant (0.01). Therefore, the improvement of seed yield can be enhanced through pedigree selection considering the desired traits in the early or segregating generation based on appropriate parents in the breeding program. |
หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Assessment of Genetic Diversity and Population Structure in Jute (Corchorus spp.) Using Simple Sequence Repeat (SSR) and Amplified Fragment Length Polymorphism (AFLP) Marker ผู้เขียน:Ranjit Kumar Ghosh, อรุณี วงษ์แก้ว,  ดร.ธานี ศรีวงศ์ชัย, รองศาสตราจารย์ , ดร.สุตเขตต์ นาคะเสถียร, รองศาสตราจารย์ , ดร.เฉลิมพล ภูมิไชย์, รองศาสตราจารย์ สื่อสิ่งพิมพ์:pdf AbstractThe genetic diversity and population structure of 63 jute genotypes from C. capsularis L. and C. olitorius L. were investigated using simple sequence repeat (SSR) and amplified fragment length polymorphism (AFLP) markers. The average polymorphism information content (PIC) value for the SSR and AFLP marker systems was 0.41 and 0.47, respectively. Primer MJM136 for SSR and primer combination E-AGG/M-CTA for AFLP showed the highest PIC values (0.51 and 0.50, respectively), indicating they were the most informative primers for the assessment of genetic diversity in jute and that SSR and AFLP markers are useful for distinguishing jute genotypes. The PIC value for C. olitorius was relatively higher (0.45) than for C. capsularis (0.43). Cluster analysis based on the unweighted pair group method of arithmetic means clearly classified the genotypes of the two jute species into two main clusters. The results from the analysis of molecular variance revealed 81% molecular variation between species but it was low (19%) within species. The most diverse genotypes were identified as IND4546, TAN4231 and BRA4794 in C. olitorius and CVL-1, BAN2596C and CHI4995C in C. capsularis and these could be used as the most diverse genetic material in future breeding programs for jute improvement. |
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Researcherดร. ธานี ศรีวงศ์ชัย, รองศาสตราจารย์ที่ทำงาน:ภาควิชาพืชไร่นา คณะเกษตร สาขาที่สนใจ:Plant breeding and Molecular breeding, Rice production and Hybrid rice, Precision agriculture and smart greenhouse, Cannabis/Hemp growing and extraction Resume |