羽衣甘蓝种子主要品质性状的表现及其相关性

Performance and Correlation of Main Quality Traits in Kale(Brassica oleracea var.acephala)Seed

随机挑选148份羽衣甘蓝种质资源和高世代材料,分析了成熟种子的含油量、蛋白质、硫苷和7种主要脂肪酸成分的表现特征及其相关性。结果表明:羽衣甘蓝成熟种子平均含油量为29.48%,平均蛋白质含量为45.13%,含油量和蛋白质总量为74.61%。硫苷含量的变幅最大,变异系数为31.72%。7种主要脂肪酸成分中,油酸和芥酸的含量较高,其次为亚油酸,棕榈酸和硬脂酸的含量较低。除硫苷含量和硬脂酸含量外,其余9个性状的表现均呈单峰正态分布。相关性分析表明,大多数性状间都具有显著或极显著的相关性,这与对甘蓝型、白菜型和芥菜型3种类型油菜的研究结果相一致。在羽衣甘蓝中存在一些优异的种质资源,通过筛选可以在油菜优质育种中加以利用。

148 lines of kale （Brassica oleracea var. acephala） from germplasm resource and advanced generation were selected randomly to analyze the characteristics and correlation of oil, protein, glucosinolates and seven fat- ty acid compositions in mature seed. The results showed that the average contents of oil and protein were 29.48% and 45.13% respectively, with a total content of oil plus protein was 74.61%. Maximum variation was observed on glu- cosinolates with a coefficient of variation reached 31.72%. Among seven fatty acid compositions, the contents of oleic and erucic acids were the highest, followed by linoleic, palmitic and stearic acids were the lowest in mature seed. Except glucosinolates and stearic acid, the rest 9 traits presented a single-peak normal distribution. Correlation analy- sis indicated that significant or very significant correlations were existent among the quality traits and this was similar to that of three types of rapeseed （B. napus L. , B. campestris L. and B. juncea Coss. ）. There were some excellent germplasm resources in kale which could be utilized directly in breeding of high quality rapeseed.