IJAIR NAAS Score : 3.99 ,ISSN : 2319-1473
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Principal Component and Cluster Analyses for Quantitative Traits in GT Sugarcane Germplasm (Saccharum Spp. Hybrids)
- Hui Zhou; Rong-Zhong Yang; Yang-Rui Li
- This evaluated the quantitative traits of Guitang (GT) sugarcane (Saccharum officinarum L. hybrid) germplasm. Nine quantitative traits of GT sugarcane germplasm were investigated with principal component and cluster analyses. There were four principal components, including sugar factor, stalk diameter-leaf factor, stalk number-leaf factor and stalk height factor, that were extracted from nine quantitative traits. These principal components accounted for 74.42 % of the variance proportion. Sugar factor was the first principal component. There was negative effect between stalk diameter and stalk number. Stalk height was relatively independent from other traits. Cluster analysis divided the 111 accessions of sugarcane germplasm into high sugar group ( including 3 subsets) and low sugar group ( including 2 subsets); most of the germplasm accessions collected in recent years were clustered into high sugar group, and most of germplasm collected in earlier years were clustered into low sugar group. Sugar trait is important in sugarcane breeding. Brix was the most important trait in seedling selection. In commercial sugarcane breeding, it was suggested Brix should be a key trait, followed by stalk height and millable stalk number, and focusing on medium to medium-large stalk diameter in clone selection. Sugar trait improvement exhibited the greatest progress in the GT sugarcane breeding program in recent decades.
- Select Volume / Issue:
- Year:
- 2015
- Type of Publication:
- Article
- Keywords:
- Guitang GT Variety; Sugarcane; Quantitative Trait; Principal Component; Cluster Analysis
- Journal:
- IJAIR
- Volume:
- 3
- Number:
- 6
- Pages:
- 1686-1690
- Month:
- May
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