5个长柄芥品种可食茎和叶的品质对比分析

Comparative analysis on the quality of edible stems and leaves of 5 varieties of mustard (Brassica juncea var. longepetiolata Yang et Chen)

中文关键词:  长柄芥  品种  品质  叶片  叶柄

英文关键词:Brassica juncea var. longepetiolata Yang et Chen  varieties  quality  blade  petiole

中文摘要:

      目的 探究长柄芥蔬菜采后可食部分品质特性, 筛选优异品种。方法 对集中种植于成都平原生态条件下的5个长柄芥品种进行采后叶片和叶柄8项品质指标(单株重、株高、维生素C、可溶性蛋白、可溶性糖、叶绿素、纤维素、游离氨基酸)的测试分析。结果 除单株重、株高和叶片可溶性糖含量3项指标外, 供试品种间有11个测试指标变异系数大于10%, 表明品种间品质差异明显, 且叶片品质指标普遍高于叶柄; 相关性分析显示共7对指标间存在显著或极显著相关关系, 其中株高和叶柄可溶性蛋白含量极显著正相关, 叶片可溶性糖含量和叶片纤维素含量极显著负相关; 测试品质指标将品种聚类为2大类, 其中1#和2#四川地方资源品种综合品质相对较优, 聚为一类。结论 该研究明确了四川地区长柄芥品种的采后品质特性, 并为优良品种选择提供了参考依据。

英文摘要:

      Objective To explore the quality characteristics of edible parts of mustard (Brassica juncea var. longepetiolata Yang et Chen) vegetables after harvest and screen excellent varieties. Methods The test and analysis of 8 quality indexes (single plant weight, plant height, vitamin C, soluble protein, soluble sugar, chlorophyll, cellulose and free amino acid) of postharvest leaves and petioles of 5 mustard (Brassica juncea var. longepetiolata Yang et Chen) varieties planted intensively in the ecological conditions of Chengdu Plain were conducted. Results Except for the 3 indexes of single plant weight, plant height and leaf soluble sugar content, the coefficient of variation of 11 indexes among the tested varieties was greater than 10%, indicating that the quality differences among the varieties were significant and the leaf quality indexes were generally higher than those of the petiole; the correlation analysis showed that there existed significant or extremely significant correlation among 7 pairs of indicators, among which, the plant height had a very significant positive correlation with the soluble protein content of petiole, and the soluble sugar content of leaf blade had a very significant negative correlation with the cellulose content of leaf blade; the test quality indexes clustered the varieties into 2 categories, and the comprehensive qualities of 1# and 2# Sichuan local resource varieties were relatively better, which were clustered into one category. Conclusion This study define the postharvest quality characteristics of mustard (Brassica juncea var. longepetiolata Yang et Chen) varieties in Sichuan, and provide a reference basis for the selection of excellent varieties.