【摘要】 对甘肃116个胡麻地方品种种质资源的粗脂肪含量、5种脂肪酸含量及碘价等主要品质性状进行测定分析,对品质性状间的相关性进行了研究。结果表明,甘肃胡麻地方种质资源粗脂肪含量,棕榈酸、硬脂酸、油酸、亚油酸、亚麻酸含量及碘价的平均值分别为37.48%、5.90%、5.32%、29.05%、10.94%、48.76%和175.60。粗脂肪含量普遍较低,油酸和亚麻酸含量高。5种脂肪酸中棕榈酸、亚麻酸、亚油酸含量变异较小,硬脂酸和油酸变异较大;不同品质性状间的相关关系和相关程度不同,粗脂肪含量与亚油酸含量有极显著的正相关,与硬脂酸含量有极显著的负相关;亚麻酸与棕榈酸、硬脂酸、油酸、亚油酸含量均呈极显著的负相关关系,与碘价呈极显著的正相关关系;棕榈酸与油酸含量有显著的正相关,硬脂酸与油酸含量有极显著的正相关,油酸与碘价呈极显著负相关。初步筛选出一批高油分、高油酸、高亚麻酸的优良种质。更多还原

【Abstract】 116 local flax varieties and germplasm in Gansu were measured and investigated with respect to fat content,five main fatty acids and iodin value were analysed.The results showed that the average contents of fat,palmitic acid,stearic acid,oleic acid,linoleic acid,linolenic acid and iodin value in Gansu local varieties were(37.48%,) 5.90%,5.32%,29.05%,10.94%,48.76% and 175.60,respectively.The fat content of these germplasm was lower and the contents of oleic acid and linolenic acid were higher than cultivars extended widely.Among five fatty acids,the variation of palmitic acid,linoleic acid,linolenic acid were not as large as that of stearic acid and oleic acid.The correlations of these quality characters were different.Fat content was significantly positively correlated with linoleic acid,but significantly negatively correlated with stearic acid.Linolenic acid was significantly negatively correlated with palmitic acid,stearic acid,oleic acid and linoleic acid,but were significantly positively correlated with the iodin value.Palmitic acid was significantly positively correlated with oleic acid.Stearic acid was significantly positively correlated with oleic acid,and oleic acid was significantly negatively correlated with the iodin value.Accessions with high fat content,oleic acid and linolenic acid contents were identified.更多还原