利用隶属函数法综合评价8个大白菜品种性状

以8个大白菜Brassica rapa ssp.pekinensis品种为试材，比较它们在浙江地区气候条件下株高、叶长、叶宽、叶片数量、开展度、包心情况、冻害情况等生物学性状及可溶性糖、可溶性蛋白质、维生素C（VC）、纤维素、硫代葡萄糖苷等5个营养品质指标差异。结果表明:‘橘红心’ ‘Juhongxin’叶片开展度最大（45.2 cm），蛋白质质量分数最高（2.21 mg·g-1）；‘沂丰橘红心’‘Yifeng Juhongxin’叶片数量最多（21.2片），株高最高（23.2 cm）；‘红圣白2号’ ‘Hongshengbai 2’叶片最长（27.2 cm），VC（208.1 mg·kg-1）和纤维素质量分数（122.1 mg·g-1）均最高，冻害发生较严重（87.18%）；‘夏抗王’ ‘Xiakangwang’叶片最宽（22.2 cm），包心率最高（86.67%），且包心紧实；‘菊锦’ ‘Jujin’可溶性糖质量分数（225.9 mg·g-1），总硫苷（13.211 μmol·g-1），吲哚族硫苷（1.843 μmol·g-1）和脂肪硫苷质量摩尔浓度（6.751 μmol·g-1）均最高；‘春小黄娃娃菜’ ‘Chunxiaohuang Wawacai’的芳香族硫苷质量摩尔浓度最高（0.750 μmol·g-1）。利用隶属函数法对8个品种大白菜生物学性状和营养品质进行综合评价，‘夏抗王’的隶属函数值最高（0.067），‘改良新夏阳’ ‘Gailiang Xinxiayang’的隶属函数值次之（0.062），‘春小黄娃娃菜’的隶属函数值最低（0.036）。因此，8个品种中最适宜在浙江进行引种栽培的品种为‘夏抗王’，其次是‘改良新夏阳’。

Evaluation of eight Chinese cabbage cultivars using the membership function method

In order to analyze the adaptability of different Chinese cabbage cultivars in Zhejiang climatic conditions, eight Chinese cabbage (Brassica rapa ssp. pekinensis) cultivars were used to compare their biological characteristics (plant height, leaf length, leaf width, number of blades, spread degree, wrap condition, and frozen injury) as well as nutritional quality (soluble sugar, soluble protein, vitamin C, cellulose, and glucosinolates) differences. Biological characteristics were obtained by ruler etc and analysis of nutritional quality were performed according to the methods from references. Each sample was analyzed three times and each experiment was conducted in triplicate (n=3). The results were expressed as means ±SE. Statistical comparisons were made by one-way analysis of variance (ANOVA) followed by Duncan's multiple range test (P=0.05). Results showed that Brassica rapa ssp. pekinensis 'Juhongxin' had the highest blade development (45.2 cm) and the highest protein content. 'Yifengjuhongxin' had the highest number of leaves (21.2 pieces) and was the tallest (23.2 cm). 'Hongshengbai 2' had the longest leaves (27.2 cm), the highest vitamin C (208.1 mg·g-1) and cellulose content (122.1 mg·g-1), but its frost damage was serious (87.18%). 'Xiakangwang' had the widest leaf width (22.2 cm), the highest heading rate (86.67%), and a high head compactness. 'Jujin' had the highest levels of soluble sugar (225.9 mg·g-1), total glucosinolate (13.211 μmol·g-1), indole glucosinolate (1.843 μmol·g-1), and aliphatic glucosinolate content (6.751 μmol·g-1); whereas, the highest content of aromatic glucosinolate was found in 'Chunxiaohuang Wawacai' (0.750 μmol·g-1). The highest value with the membership function method for biological characteristics and nutritional quality was 'Xiakangwang' (0.067) followed by 'Gailiang Xinxiayang' (0.062), with the lowest being 'Chunxiaohuang Wawacai' (0.036). Therefore, the most suitable among these eight cultivars for cultivation in Zhejiang was 'Xiakangwang' followed by 'Gailiang Xinxiayang'.