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的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.