新春系列不同小麦品种品质性状的分析与评价

Quality Characters of Wheat Varieties in Spring Series:Analysis and Evaluation

为了探究新疆不同春小麦品种的品质特性,建立可靠的小麦品质评价体系,为新疆春小麦品质综合表现较为突出的品种的推广、选育及大规模的品质评价奠定基础。以9个新春系列小麦品种为试验材料,对其品质相关的14个指标进行测定,运用相关性分析、主成分分析和聚类分析方法对其品质进行分析和综合评价。结果表明利用相关性分析,14个单项测定指标之间存在或大或小的相关性,从而导致它们所提供的信息发生部分重叠;进一步通过主成分分析将14个单项指标转化为5个相互独立的综合指标,5个主成分的累计方差贡献率达94.46%,涵盖了原始测定指标所携带的绝大部分信息;通过隶属函数分析结合权重系数,得到不同小麦品质的综合评价值(D值);最后,通过聚类分析将9个小麦品种按品质优劣划分为3种类型,其中品质一般的1个品种,品质良好的4个品种,品质优的4个品种。‘新春37号’、‘新春41号’和‘新春38号’品质综合表现较为突出,可为新疆优质春小麦品种选育提供参考依据。

The objectives are to explore the quality characteristics of different spring wheat varieties in Xinjiang,establish a reliable quality evaluation system for wheat,and lay a foundation for the promotion,breeding and large-scale quality evaluation of Xinjiang spring wheat varieties with outstanding comprehensive performance.Nine accessions of spring wheat lines were used as experimental materials,fourteen qualityrelated indexes were determined,and the wheat qualities were analyzed and comprehensively evaluated by correlation analysis,principal component analysis and cluster analysis.The results showed that there was a large or small correlation between the fourteen single indexes,which led to the partially overlapped information.Fourteen single indexes were further classified into five independent comprehensive indexes by principal component analysis.The cumulative variance contribution rate of the five principal component was94.46%,which covered most of information carried by the original measurement indexes;According to membership function analysis combined with weight coefficient,the comprehensive evaluation value(D value)of different wheat varieties’quality were obtained.Finally,the nine wheat varieties were divided into three types according to their quality by cluster analysis.Among them,there was one variety with general quality,four varieties with good quality and four varieties with high quality.The comprehensive quality performance of‘Xinchun 37’,‘Xinchun 41’and‘Xinchun 38’is relatively outstanding,which can provide reference for selection and breeding of high-quality spring wheat varieties in Xinjiang.