Analysis and evaluation on agronomic characters and active components of 10 ginger resources introduced in Guizhou
The biological characters and quality performance of 10 ginger resources outside the province and 5 resources within the province were investigated,which provided theoretical basis for the development of ginger industry in Guizhou and the formulation of relevant standards.Field investigation,water vapor method,GC-MS and HPLC techniques were used to study the agronomic properties of ginger resources from different sources and the content of ginger essential oil and gingerol.The results showed that there were 9 ginger resources with yield>500 g,GZD plant yield was the highest(670 g).The correlation analysis showed that the yield per plant was significantly negatively correlated with the number of rhizome and positively correlated with the number of main stem leaves.Rhizome width was positively correlated with plant height,branch number,stem and leaf weight and plant width.The diameter of ginger finger was negatively correlated with the number of ginger finger,positively correlated with the branch number and the width of Rhizome.The dry matter content of JY was significantly higher than that of others with 21.72%.There was no significant difference in dry matter content between HN and GDY,with 12.44%and 12.31%,respectively.The content of cellulose in HLwas 1.384%,signifi-cantly higher than that of other resources.The 15 ginger accessions could be divided into 2 types according to the component contnet of essential oils:Type Ⅰ(11 parts),α-gingerene>27%,curcumene>6%,α-farthene>12%,3 main components content accounted for about 50%of the total aroma components;Type Ⅱ(4 parts),sum of 3 main components content<30%.There were 13 samples with 6-gingeral content>6 mg·g-1.The 6-gingeral content(12.36 mg·g-1)of GZD was signif-icantly higher than that of others.In summary,GG,YJ and HL have better production and quality performance than those from other provinces,single plant yield was above 500 g,the dry matter content was 14.75%-17.20%,the essential oils content was much higher,accounting for 0.022-0.029 mL·g-1,the 6-gingeral content was 6.99-10.20 mg·g-1.Inclusion,GG,YJ and HL are suitable for planting in Guizhou.