Volume 25 Issue 3
Jun.  2018
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ZHANG Fei, FANG Wei-min, CHEN Fa-di, ZHAO Hong-bo, JIA Wen-ke. Genetic variability patterns and correlation analysis for cut-chrysanthemum with emphasis on inflorescence traits[J]. Journal of Zhejiang A&F University, 2008, 25(3): 293-297.
Citation: ZHANG Fei, FANG Wei-min, CHEN Fa-di, ZHAO Hong-bo, JIA Wen-ke. Genetic variability patterns and correlation analysis for cut-chrysanthemum with emphasis on inflorescence traits[J]. Journal of Zhejiang A&F University, 2008, 25(3): 293-297.

Genetic variability patterns and correlation analysis for cut-chrysanthemum with emphasis on inflorescence traits

  • Received Date: 2007-06-12
  • Rev Recd Date: 2007-12-10
  • Publish Date: 2008-06-10
通讯作者: 陈斌, bchen63@163.com
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    沈阳化工大学材料科学与工程学院 沈阳 110142

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Genetic variability patterns and correlation analysis for cut-chrysanthemum with emphasis on inflorescence traits

Abstract: Genetic improvement for target traits(flower head diameter, ray floret length, ray floret breadth, ray floret number and tubular disk floret number) in chrysanthemum (Dendranthema×grandiflora) was undertaken by determining the nature and amount of variability present in genotypes and the extent to which the desirable traits were heritable, as is commonly used in agronomic crops. A field experiment was conducted in Nanjing, from June 2006 to January 2007 (1) to assess the extent and pattern of diversity for 52 cut-chrysanthemum genotypes with emphasis on inflorescence traits as well as (2) to estimate their heritability in broad sense (h2B) and genetic advance from selection of the different traits using variance and correlation analysis. Results showed that the phenotypic coefficient of variability ranged from 28.66% for flower head diameter to 82.63% for ray floret number, whereas the genotypic coefficient of variability varied from 28.20% for flower diameter to 82.10% for ray floret number. Generally, the phenotypic coefficient of variability was a little higher than genotypic coefficient of variability for each trait. All inflorescence traits exhibited considerably high h2B(>96%).The highest two h2Bwere ray floret number(99.36%) and tubular disk floret number(99.07%), and there was a high genetic advance of 168.59% for ray floret number and 149.42% for tubular disk floret number. This indicated the presence of additive gene action, which suggested that direct selection was suitable for improvement of these two traits. A correlation analysis revealed a highly significant correlation (P<0.01) among the inflorescence traits investigated.

ZHANG Fei, FANG Wei-min, CHEN Fa-di, ZHAO Hong-bo, JIA Wen-ke. Genetic variability patterns and correlation analysis for cut-chrysanthemum with emphasis on inflorescence traits[J]. Journal of Zhejiang A&F University, 2008, 25(3): 293-297.
Citation: ZHANG Fei, FANG Wei-min, CHEN Fa-di, ZHAO Hong-bo, JIA Wen-ke. Genetic variability patterns and correlation analysis for cut-chrysanthemum with emphasis on inflorescence traits[J]. Journal of Zhejiang A&F University, 2008, 25(3): 293-297.

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