Distribution of puroindoline alleles in Chinese winter wheats and its effect on solvent retention capacity
Distribution of puroindoline alleles in Chinese winter wheats and its effect on solvent retention capacity
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发表时间：
2005
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通讯作者：
Feng Chen;Senhe Qian;Yan Zhang;X. Xia;Zhonghu He
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作者：
Feng Chen;Senhe Qian;Yan Zhang;X. Xia;Zhonghu He
以中国4个冬小麦产区的244个品种和优良品系为材料，研究了其籽粒硬度、面粉粒度、腐吲哚类型和溶剂保持力的变异规律。结果表明，在中国冬小麦品种中检测到Pina-D1a/Pinb-D1a(野生型)、Pina-D1b/Pinb-D1a、Pina-D1a/Pinb-D1b、Pina-D1a/Pinb-D1d和Pina-D1a/Pinb-D1p 5个等位基因。Pina-D1a/Pinb-D1b是硬质小麦中最常见的类型，出现频率为81.2%，目前仅存在于我国小麦中。用SKCS(单核表征系统)和NIR(近红外光谱分析)测得的WSRC与硬度的相关系数分别为0.73和0.64。Pina-D1b/Pinb-D1a等位基因的WSRC和SCSRC均值显著高于Pina-D1a/Pinb-D1b。此外，不同地区的小麦具有不同的硬度类型和溶剂保持能力。中国平原北部冬小麦与西南冬麦区土壤水分状况差异显著，中国平原北部冬小麦与长江中下游冬麦区土壤水分状况差异显著。本研究为我国小麦硬度的改良和溶剂保持性在小麦早代选择中的应用提供了有益的信息。
In total,244 varieties and advanced lines from four Chinese winter wheat regions were used to investigate the variation of kernel hardness,flour particle size,puroindoline type and solvent retention capacity.The results indicated that five puroindoline alleles including Pina-D1a/Pinb-D1a (wild type),Pina-D1b/Pinb-D1a,Pina-D1a/Pinb-D1b,Pina-D1a/Pinb-D1d and Pina-D1a/Pinb-D1p were observed in Chinese winter wheats,and Pina-D1a/Pinb-D1b was the most prevalent type with a frequency of 81.2% in hard wheats.Pina-D1a/Pinb-D1p was only present in Chinese wheats up to now. Significant correlations were observed between kernel hardness and four kinds of SRC (solvent retention capacity) and the coefficients of correlation between WSRC (water solvent retention capacity) and hardness by SKCS (single kernel characterization system) and NIR (near infrared spectroscpy) were 0.73 and 0.64, respectively. Means of WSRC and SCSRC (sodium carbonate solvent retention capacity) in varieties with Pina-D1b/Pinb-D1a allele were significantly higher than that of Pina-D1a/Pinb-D1b. In addition, wheats in different regions have different hardness types and solvent retention capacity. The average of WSRC in Northern China Plain winter wheats was significantly different from that of Southwestern winter wheat region, and the average of SCSRC in Northern China Plain winter wheats was significantly different from that of the middle and lower reaches of the Yangtze River winter wheat region. This study has provided useful information for improving Chinese wheat hardness and in the application of solvent retention capacity at early generation selection in wheat breeding program.