Table 1.

The selection of internal standards.

No	Cultivar	Internal Quantitative Standard	Internal Verification Standards	%RSD a
1	Jinhong NO.1	2-Octanone	(S)-(+)-2-Octanol	2.84
2	Hongshi NO.2	2-Octanone	3-Octanone	3.38
3	Hongyang	2-Octanone	3-Octanone	3.13
4	Jinhong 50	2-Octanone	3-Octanone	2.19
5	Oriental Red	2-Octanone	3-Octanone	4.29
6	Qihong	2-Octanone	3-Octanone	1.18
7	Sungold	2-Octanone	(S)-(+)-2-Octanol	8.91
8	Jinyan	2-Octanone	3-Octanone	2.34
9	Huayou	2-Octanone	3-Octanone	2.50
10	Jintao	2-Octanone	3-Octanone	3.01
11	Puyu	2-Octanone	3-Octanone	1.53
12	Hort16A	2-Octanone	3-Octanone	0.22
13	Xixuan NO.2	2-Nonanone	3-Nonanone	10.81
14	Jinshi	3-Octanone	3-Octanol	15.41
15	Cuixiang	2-Octanone	3-Octanone	2.83
16	Hayward	2-Octanone	3-Octanone	1.06
17	Xuxiang	2-Octanone	(S)-(+)-2-Octanol	2.29
18	Guichang	2-Octanone	3-Octanone	4.89
19	Ruiyu	2-Octanone	3-Octanone	1.17
20	Jingong NO.7	2-Octanone	3-Octanone	3.77

^a The relative standard deviation between the internal quantification standard and the internal verification standard.