Genetic Diversity Analysis Based on Main Phenotypic Characteristics of <i>Erianthus arundinaceum</i> Germplasm from Different Regions
Welcome to Chinese Journal of Tropical Crops,

Chinese Journal of Tropical Crops ›› 2020, Vol. 41 ›› Issue (6): 1108-1116.DOI: 10.3969/j.issn.1000-2561.2020.06.006

• Crop Culture and Nutrition, Genetic BreedingCrop Culture and Nutrition, Genetic Breeding • Previous Articles     Next Articles

Genetic Diversity Analysis Based on Main Phenotypic Characteristics of Erianthus arundinaceum Germplasm from Different Regions

WANG Chunfang1,YU Xinghua2,WANG Xianhong1,*(),YANG Qinghui1,*()   

  1. 1. College of Agronomy and Biotechnology, Yunnan Agricultural University, Kunming, Yunnan 650201, China
    2. Wenshan Academy of Agricultural Sciences, Wenshan, Yunnan 663099, China
  • Received:2019-08-02 Revised:2019-09-03 Online:2020-06-25 Published:2020-07-30
  • Contact: WANG Xianhong,YANG Qinghui

Abstract:

The germplasm resource, genetic diversity including plant height, stem diameter, internode length, leaf length, leaf width and brix of 76 clones of E. arundinaceum, which were collected from different regions was analyzed. The average coefficient of variation of the six phenotypic traits was 14.6%-53.4%, the coefficient of variation of plant height and internode length was 53.4% and 37.7%, respectively, and the coefficient of variation of brix and leaf length was 19.1% and 14.6%, correspondingly. There was a significant positive correlation among plant height, stem diameter, leaf width, leaf length and internode length, among which the correlation coefficient between plant height and internode length was 0.818. Meanwhile, brix was negatively correlated with plant height and internode length, with correlation coefficients of -0.232 and -0.263, respectively. Principal component analysis showed that the cumulative contribution rate of the first two principal components was 72.58%, of which the contribution rate of the first principal component was 51.21%, and that of the second principal component was 21.37%. By cluster analysis, 76 clones were divided into eight groups and the comprehensive characters of V and VI groups were the best. The two groups are excellent E. arundinaceum germplasm resources, which could be excavated and utilized in sugarcane breeding program.

Key words: Saccharum spp., Erianthus arundinaceum, phenotypic characteristics, genetic diversity

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