赵勇,赵俊,昝逢刚,赵丽萍,赵培方,朱建荣,BURNER David M.,吴才文,刘家勇.86份甘蔗种质资源工艺性状的评价[J].湖南农业大学学报:自然科学版,2019,45(5):.
86份甘蔗种质资源工艺性状的评价
  
DOI:
中文关键词:  甘蔗  种质资源  工艺性状  主成分分析  聚类分析  判别分析
英文关键词:sugarcane  germplasm  technological traits  principal component analysis  cluster analysis  discriminant analysis
基金项目:国家自然科学基金项目(31660418);云岭英才计划“高端外国专家”专项;国家糖料体系产业技术体系(CARS–170101);云南省甘蔗遗传改良重点实验室基金项目(2018DG018–7)
作者单位
赵勇,赵俊,昝逢刚,赵丽萍,赵培方,朱建荣,BURNER David M.,吴才文,刘家勇 1.云南省农业科学院甘蔗研究所云南 开远 6616992.云南省甘蔗遗传改良重点实验室云南 开远 661699 
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中文摘要:
      基于大田试验,在成熟期选择甘蔗锤度、甘蔗糖分、蔗汁糖分、简纯度和纤维分等5个重要工艺性状,运用主成分和聚类分析法对86份甘蔗种质资源进行评价及筛选。方差分析结果表明,各种质主要工艺性状间均存在极显著差异(P<0.01),变异系数为3.60%~11.60%,变异广泛。对86份种质5个工艺性状进行主成分分析,结果表明,5个工艺性状可简化为2个主成分,第一、二主成分累计贡献率达93.700%,特征值分别为3.700和0.990,显著高于其他因子。结合聚类分析,86份种质资源可以分为5个类群,第Ⅰ、Ⅱ、Ⅲ、Ⅳ、Ⅴ类分别包含20、12、11、33、10份。甘蔗锤度、甘蔗糖分、蔗汁糖分和蔗汁简纯度以第V类群的最高,第Ⅱ类群的最低,其他3个类群的居中;纤维分以第Ⅲ类群的最低,第Ⅳ类群的最高。聚类结果的逐步判别分析显示,平均判对概率为91.86%,较好地体现了种质资源工艺性状的实际表现,筛选出10份工艺性状优良的种质(CP70–330、CP81–1405、CP94–1100、CP94–2059、KQ01–1261、Q155、Q188、Q190、Q207、Q96),全部为早熟品种,其中,CP81–1405、Q155、Q96的平均甘蔗糖分超过16%,可作为高糖亲本加以利用。
英文摘要:
      In the field experiments on sugarcane germplasm, we used the mature plants as materials and characterized five quality traits, brix, sucrose content, juice sucrose, juice purity and fiber on them. The analysis of variance showed that there were significant differences among clones for the five quality traits (P < 0.01) and the coefficient of variation ranged from 3.60% to 11.60%, with wide variation. The principal component analysis (PCA) showed that the five quality traits of sugarcane clones could be separated into two principal components and the cumulative contribution rate of the first and second principal components was 93.70% with the characteristic roots 3.700 and 0.990, respectively. The cluster analysis revealed that the 86 germplasm could be divided into five groups: 20 clones in Group I, 12 clones in Group II, 11 clones in Group III, 33 clones in Group IV, and 10 clones in Group V. Group V owned highest Sugarcane brix, sugarcane sugar, sugarcane juice sugar and sugarcane juice purity. The fibre fraction was the lowest in group III and the highest in group IV. Stepwise discriminant analysis gave an average probability of 91.86%. It could be concluded that ten germplasms showed very good technological characters and they were CP70-330, CP81-1405, CP94-1100, CP94-2059, KQ01-1261, Q155, Q188, Q190, Q207, Q96, all of which were early-maturing varieties. Among them, CP81-1405, Q155 and Q96 had higher sugar content (>16%) and thus they can be used as high sugar content parents.
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