绿竹笋表形性状的多样性研究与分级建议

The Research of Phenotypic Characters Diversity and Suggestion of Classification of Bambusa oldhamii Bamboo Shoot

通过对竹笋表形性状的测量、主成分和聚类分析,研究其表形性状的特性,根据主成分分析结果,反映笋重量最主要的因素是笋的长度类性状,其次是笋的曲度类性状。2个主成分因子特征值的累计贡献率达72.21%。对绿竹笋进行分类定级,建议根据绿竹笋短边长、长短边差2个性状进行。根据聚类分析,建议将绿竹笋分为五类四级:特级、一级、二级、三级、等外。

Bambusa oldhamii is native to Taiwan and southeastern China,but has been widely cultivated elsewhere because young shoots are cultivated for their texture and taste.To analyze the diversity of the phenotypic characteristics of B.oldhamii bamboo shoot,measurements were made of phenotypic characters followed by principle component and cluster analyses.These data were also used to suggest a classification system for bamboo shoots.The results of principle component analysis show the length and curvature of bamboo shoots can be used to estimate their weight.The first two principle components accounted for 72.21%of the variation in the data.The shorter length of bamboo shoots along with the difference between the shorter and longer length were used to classify bamboo shoots.Based on cluster analysis,the bamboo shoots were classified into five quality classes:best,second,third,fourth,and other quality.