WU Taosheng,ZHOU Tao,XIAO Chenghong,et al.Correlation of Phenotypic Traits and Yield and Quality of Cultivated Bletilla striata in Guizhou Province[J].Northern Horticulture,2021,(21):109-116.[doi:10.11937/bfyy.20211064]
贵州栽培白及表型性状相关性
- Title:
- Correlation of Phenotypic Traits and Yield and Quality of Cultivated Bletilla striata in Guizhou Province
- 文献标志码:
- A
- 摘要:
- 以贵州30个产地的150份白及样品为研究对象，采用描述统计、相关性分析及通径分析等方法，研究了株高、花数、叶片数、茎数、多糖含量等20个表型性状的相关性，筛选优质高产的间接指标，以期为白及优质种质资源筛选及品种选育提供参考依据。结果表明：贵州栽培白及表型性状变异系数为15.99%~87.88%，其中地下生物量干质量变异系数为76.42%，多糖含量变异系数为16.35%；相关性分析结果显示，大多数表型性状之间存在显著相关性，地下生物量干质量与地上性状茎数、茎粗、叶宽、叶片数、地上生物量干质量均存在极显著（P<0.01）正相关，而多糖含量与各性状之间无显著相关性；通径分析结果显示，地上性状的茎数对地下生物量干质量正向直接作用最大、地上生物量干质量对地下生物量干质量正向间接作用最大，对多糖影响最大的地上性状为茎数。综合分析可知，白及地上性状茎数和地上生物量干质量可作为优质高产筛选的重要间接指标，宜选择地上生物量大、茎数多的种质作为白及高产优质的种质资源。
- Abstract:
- Taking 150 Bletilla striata samples from 30 producing areas in Guizhou as test material,the correlation of 20 phenotypic traits such as plant height,the number of flowers,leaves and stems,polysaccharide content was studied by using descriptive statistics,correlation analysis and path analysis,in order to provide reference for selection and breeding of white and high quality germplasm resources,screen out the indirect index of high-quality and high-yield.The results showed that the variation coefficient of cultivated Bletilla striata phenotypic traits was from 15.99% to 87.88%,in which the variation coefficient of underground biomass dry weight was 76.42%,and the variation coefficient of polysaccharide content was 16.35%.Correlation analysis demonstrated that there were significant correlations a most of the phenotypic traits,and the dry weight of underground biomass and the number of aboveground traits were extremely significant （P<0.01）,but there was no significant correlation between polysaccharide content and characters.The results showed that the stem number of aboveground traits had the greatest direct and direct effect on the dry weight of underground biomass,and the stem number of aboveground traits had the greatest effect on the polysaccharide.Comprehensive analysis indicated that shoot number and dry weight of aboveground biomass could be important indirect indexes for high-quality and high-yield screening,and germplasm with a large number of aboveground biomass and stem should be selected as germplasm resources of high-quality and high-yield of Bletilla striata.
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备注/Memo
第一作者简介：吴桃生（1996-），女，苗族，硕士研究生，研究方向为中药及民族药资源分类鉴定与质量控制。E-mail:3256684857@qq.com.责任作者：肖承鸿（1985-），男，硕士，高级实验师，现主要从事中药资源鉴定及质量评价等研究工作。E-mail:xiaochenghong1986@126.com.基金项目：国家自然科学基金委-贵州省人民政府联合项目基金资助项目（U1812403）；中央本级重大增减支资助项目（2060302）；贵州省高层次创新型人才资助项目（黔科合平台人才[2018]5638-2）。收稿日期：2021-03-12