Abstract:

【Objective】 This study is to determine the relative contributions of genotypes and the interactions between genotype and location on variation of lignan contents in flaxseeds. 【Method】 Using HPLC, lignan contents of eleven flax varieties planted at four representative locations in 2005 and 2006 were determined. 【Result】 The results showed that lignan contents ranged from 6.487 to13.127 mg?g-1 of 11 varieties planted in 88 locations. The highest content was found in line 97047, and the lowest in line Yi 04. In the four locations tested, Bashang in Hebei Province gave the highest total lignan contents, and the lowest contents were from those grown in Yili of Xinjiang. Genotype, location and interactions between genotype and location have significant influence on variation in lignan contents in all varieties. The stability of lignan content in different varieties also differed significantly. Lines 97047 and Yi 04 showed high stability. 【Conclusion】 Genotype is the most important factor that affects the lignan content in flaxseed, therefore it would allow for an improvement of lignan contents by breeding. Different varieties have different feasible planting areas. Line 97047 contains the highest lignan content among all varieties tested. It is also adapted to a wide range of flax planting areas.

Key words: flax (Linum usitatissimum L.), lignan content, genotype, location, stability