Diversity of Catechin Content in the Leaves of Persimmon Germplasms

Catechins are essential phenolic compounds in persimmon. However, the catechin content leaves of persimmon germplasms has not been systematically and comprehensively evaluated. To assess variation different growth stages astringency types leaves, young adult 249 from Korea, Japan, 16 provinces China was quantified using an HPLC method. The results showed that (−)-epicatechin (EC) (−)-gallocatechin gallate (GCG) had higher coefficient (CV) values (106.74%) (91.49%), respectively. genetic diversity H’ (+)-catechin (CA) (+)-gallocatechin (GC) (2.00 2.03), value (−)-epigallocatechin (EGC) CA (1.98 1.92). non-galloylated catechins, EGC, EC, CA, were significantly positively correlated with each other both leaves. accumulation patterns types; (EGCG) highest average Guangxi Shanxi China, (CG) found to be Japanese pollination-constant non-astringent (J-PCNA) GCG levels Chinese PCNA (C-PCNA) type. classified into five clusters (Cluster I-V) by SOM clustering based on nine GC having Cluster V In addition, four excellent III EGC Thus, critical period for utilization can further determined, provide theoretical references germplasm screening.