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四川牡丹(Paeonia decomposita Hand.-Mazz.)结实量大,专性种子繁殖,具油用开发潜力。对7个不同野生居群的四川牡丹种子千粒质量、种仁出油率、籽油中脂肪酸组成及相对含量进行了测定,并探讨其与土壤因子的相关性。结果表明:四川牡丹不同居群种子千粒质量平均为(311.65±46.45)g,平均种仁出油率32.23%±1.96%,居群间差异显著(P<0.05);籽油中共检测到7种主要脂肪酸:棕榈酸、十七烷酸、硬脂酸、油酸、亚油酸、亚麻酸和花生一烯酸,其中不饱和脂肪酸相对含量高达91.94%~93.70%,亚麻酸相对含量高达40.45%~47.68%,不同居群籽油脂肪酸组分相对含量存在差异;土壤有效钾含量与种子出油率呈显著负相关(P<0.05),土壤有机质、全氮含量与亚油酸含量呈显著负相关(P<0.05),其他脂肪酸组分与土壤因子相关性不显著。
Sichuan Peony (Paeonia decomposita Hand.-Mazz.) Large amount of seed, specialty seed multiplication, with oil development potential. Thousands of seed quality, seed oil yield, fatty acid composition and relative content in seed oil of seven perennial populations of four wild populations were determined and their correlations with soil factors were also discussed. The results showed that the average mass per 1000 seeds of seedlings of different populations was (311.65 ± 46.45) g and the average seed oil yield was 32.23% ± 1.96%, with significant differences among populations (P <0.05) The main fatty acids were palmitic acid, palmitic acid, stearic acid, oleic acid, linoleic acid, linolenic acid and arachidonic acid, in which the relative content of unsaturated fatty acids was as high as 91.94% -93.70% and the relative content of linolenic acid was as high as 40.45 % ~ 47.68%. The relative contents of fatty acids in seed oil of different populations were different. There was a significant negative correlation between soil available potassium content and seed oil yield (P <0.05), soil organic matter, total nitrogen content and linoleic acid content were significant Negative correlation (P <0.05), while other fatty acid components had no significant correlation with soil factors.