湖北省板栗地方品种果实性状研究

通过实地调查，对湖北省20个板栗地方品种的10个性状利用SAS软件进行了板栗品种前Q型聚类及其10个性状的R型聚类分析，Q型聚类将20个板栗品种分成3组，每组都存在着明显的特点：（1）油栗型品种，坚果小，晚熟，耐贮藏，适于炒食或贮藏保鲜，延后上市，（2）大果型品种，坚果特大，适于菜用或加工，中熟或中晚熟，（3）中果型品种，坚果中等大，成熟上市较早，适于鲜食，R型聚类分析揭示了性状之间的相对关系，把10个性状分成了3组，8个形质性状最先聚合在一起成为一组，2个数量性状彼此独立，坚果平均质量，总苞平均质量是不稳定的数量性状，根据总苞和坚果性状编制了湖北省板栗品种检索表，就湖北省板栗品种结构调整提出了建议。

Study on the Fruit Traits of Local Chestnut Cultivars in Hubei Province

Based on the field investigation, Q cluster analysis and R cluster analysis were used to examine the 10 traits of 20 local chestnut cultivars grown in Hubei Province. According to Q cluster analysis, 20 cultivars were divided into 3 groups:(1) type youli, with the characters of small nut, late maturing and easy to store; (2) type of large nut , with the characters of large nut size and middle maturing; (3)type of middle nut , with the characters of middle nut size and late maturing . By R cluster analysis,the relationship among various traits was revealed . The 10 traits were divided into 3 groups:(1) the average mass of nut; (2) the average mass of involucre; (3) other traits. The former two are unstable quantitative traits.Based on involucre and nut traits , the key to the variety of chestnut was compiled. The author also puts forward some suggestions on adjustment of variety structure in Hubei Province.