基因型与环境对小麦戊聚糖含量及RVA黏度的影响

为研究基因型与环境对小麦戊聚糖含量及RVA黏度的影响，选取10个小麦品种（系）和5个生态试验点，测定了小麦籽粒中的总戊聚糖(TP)、水溶性戊聚糖(WSP)、非水溶性戊聚糖含量(WIP)和RVA黏度等共10个性状，探讨了3种戊聚糖含量和7个RVA性状的影响因素及相互关系。结果表明，包括总戊聚糖、水溶性戊聚糖含量在内的10个性状均受到基因型、环境以及基因型与环境互作的影响。其中，基因型方差和环境方差在所有性状上均达到显著或极显著，基因型与环境互作方差在水溶性戊聚糖和7个RVA性状上达到极显著；戊聚糖含量的环境变异＞基因型变异＞基因型与环境互作变异，而RVA黏度性状的基因型变异均大于环境变异。水溶性戊聚糖含量与高峰黏度呈显著负相关。

Effects of Genotypes and Environments on Pentosan Content and RVA Viscosity of Wheat

Ten traits in the grains of ten wheat varieties (lines) planted in five environments, including total pentosan (TP), water soluble pentosan (WSP), water insoluble pentosan (WIP) and seven RVA viscosity traits, were determined to investigate their correlation and the effect factors. The results showed that all the ten traits were affected by the genotypes, environments and their interaction. Genotypic (G) variances and environmental (E) variances were significant or greatly significant difference, G×E variances was greatly significant difference for WSP and seven RVA viscosity traits. In pentosan content traits, environmental variation was more than genotypic variation, and G×E variation was the smallest; While, genotypic variations were more than environmental variations for all the seven RVA viscosity traits. WSP content was negatively and significantly correlated with the peak viscosity. The effects of genotype and environment were discussed in grain traits of wheat quality breeding and new wheat varieties selection breeding.