Phenotypic diversity analysis of the fruit of Amomum tsao-ko Crevost et Lemarie, an important medicinal plant in Yunnan, China

Correlation Analysis of Compounds in Essential Oil of Amomum tsaoko Seed and Fruit Morphological Characteristics, Geographical Conditions, Locality of Growth

“…This is negatively correlated to the longitude and reverse trend to the latitude. Therefore, for the purpose of obtaining a high content of linalool (15), the northwest area in the Yunnan province is a better choice than the southeast area. δ-terpineol (18) is also positively correlated to the latitude.…”

“…The samples used in this study were harvested when the fruit turned reddish-brown. Sabinene (4), trans-sabinenehydrate (13), linalool (15), and (E)-2-tetradecenal (45) increased over time. Sabinene (4) and linalool (15) are perfumery, and (E)-2-tetradecenal (45) has a citrus odor.…”

“…Considering that sabinene (4), trans-sabinenehydrate (13), linalool (15), and (E)-2tetradecenal (45) were related to the harvest date, they have been excluded from the analysis of correlation between compounds and distribution areas.…”

“…After years of cultivation, morphological variations have developed in the fruits and seeds of A. tsaoko. According to the length-width ratio and shape of the ends, the fruit types are defined as elliptic, cone-shaped, spindle-shaped, and spheroidal [15]. In different regions, the frequencies of distinct shapes are variable [15].…”

“…According to the length-width ratio and shape of the ends, the fruit types are defined as elliptic, cone-shaped, spindle-shaped, and spheroidal [15]. In different regions, the frequencies of distinct shapes are variable [15]. In China, people believe that larger or roundish ones have a more prominent smell, which may indicate good quality and higher price.…”