四川省辣椒种质资源的辣椒素含量评价

为了解四川省辣椒资源的辣椒素含量分布，为辣椒资源分类、鉴定、保存和育种提供参考，采用GB/T 21266—2007的方法对四川省83份辣椒种质资源的辣椒素含量和果形进行研究。结果表明：（1）辣椒外形和辣椒素含量无显著相关性；（2）83份参试材料的辣椒素含量差异显著，辣椒素含量最高为22.61 g/kg，最低仅为0.16 g/kg，平均含量2.20 g/kg；（3）通过类平均法将83份辣椒种质资源按照辣椒素含量聚为5类，分别为极高、高、普通、低、极低，普通和极低类群包含的种质最多，分别为18、48份，而极高和高包含的种质最少，分别为2、8份。本研究明确了一批四川辣椒种质的辣椒素含量，为辣椒种质资源的研究利用提供了理论依据。

Evaluation of Capsaicin Content of Capsicum annuum Germplasm Resources in Sichuan

To evaluate the capsaicin content of pepper collected in Sichuan and provide references for pepper identification, classification, conservation and breeding, the authors studied the capsaicin content and the morphology of fruits of 83 pepper accessions by using the method of GB/T 21266—2007. The results showed that: (1) the shape and capsaicin content had no significant correlation in these accessions; (2) the variation of capsaicin content was significant, from 0.16 to 22.61 g/kg, with the average content of 2.20 g/kg; (3) the 83 accessions could be divided into five groups according to the capsaicin content, extremely high (2 populations), high (8 populations), normal (18 populations), low (7 populations) and extremely low (48 populations), respectively. This research identified the capsaicin content of some pepper germplasms in Sichuan and provided a theoretical basis for further exploitation of the germplasm resources.