普通小麦面筋强度早代选择研究  

Early Generation Selection of Gluten Strength in Common Wheat

作　　者：张勇[1] 张立平[1] 阎俊[1] 张艳[1] 王德森[1] 刘建军[2] 何中虎[1] 

机构地区：[1]中国农业科学院作物科学研究所/国家小麦改良中心/国家农作物基因资源与基因改良重大科学工程,北京100081 [2]山东省农业科学院作物研究所,山东济南250100

出　　处：《作物学报》2006年第11期1663-1670,共8页Acta Agronomica Sinica

基　　金：国家自然科学基金(39930110);国家重大基础研究发展计划(973计划)(2002CB101300)项目

摘　　要：以优质强筋小麦品种中优9507为母本，与安农91168、高优503、冀5099、晋麦45和鲁麦5号5个筋力不同的品种配制杂交组合，用亲本、F1、F2和F2：3家系研究了SDS沉降值与和面时间的分布，分析了沉降值的遗传力和选择响应。结果表明，组合间F2、F2：3沉降值及F2：3，和面时间超高亲比例存在差异，以强筋与强筋、强筋与中强筋品种所配杂交组合中优9507／安农91168、中优9507／高优503和中优9507／冀5099的超中优9507比例较高，F2和F2：3家系沉降值超中优9507比例分别为55％、30％、30％和74％、41％、53％，F2：3家系和面时间超中优9507比例则分别为76％、39％、27％。沉降值的狭义遗传力较高，为43％～70％，适合进行早代选择。沉降值的实际选择响应与选择强度关系不大，较高的选择压力并不一定能获得相应的选择响应，在本研究中，所有组合可都采用10％的选择压力。组合间沉降值的实际选择响应存在差异，以中优9507／安农91168组合（强筋×强筋）进行品质改良效果较好。在亲本选配时应尽量选用面筋强度中等以上的品种作亲本，建议在F2用沉降值、F3用和面仪参数作为选择指标来改良面筋强度。Most of the Chinese wheat （ Triticum aestivum L. ） cuhivars are characterized by weak gluten strength, which are not suitable for Chinese main food including dry white Chinese noodles and steamed bread using mechanized methods. The major objective for quality wheat breeding currently in Northern China is to improve the protein quality. The parents, F1 , F2 and F2：3 progenies of five crosses between Zhongyou 9507 with strong gluten strength and five cultivars with different gluten strength from strong to weak, namely Annong 91168, Gaoyou 503, Ji 5099, Jinmai 45 and Lumai 5, were used to analysze the frequency distribution for SDS sedimentation value and mixograph mixing time, heritability and response to selection for SDS sedimentation value. The percentages of F2 and F2：3 progenies with higher sedimentation value than that of Zhongyou 9507 in the number calculations in crosses of both parents with strong or medium to strong gluten strength like Zhongyou 9507/Annong 91168, Zhongyou 9507/Gaoyou 503, and Zhongyou 9507/Ji 5099, were 53%, 30%, 30% and 74%, 41%, 53%, respectively, and that in F2：3 family with longer mixograph mixing time were 76%, 39%, and 27%, respectively, the progeny number varied by crosses. Narrow-sense heritability estimates for SDS sedimentation value was high with 43 %-70%, indicating that this trait was suitable for early generation selection. The actual response to selection did not differ significantly between 5% and 10% selection intensities for all crosses, suggesting 10% selection intensity should be used. The cross of Zhongyou 9507 and Annong 91168, both with strong gluten strength, showed good selection response for protein properties, indicating that parents with strong or medium to strong gluten strength should be used first at all in the crosses with the main wheat breeding objective being to improve protein quality. It also indicated that SDSsedimentation value in F2 and mixograph parameters such as mixing time in F2：3 should be used in early generation selection to impr

关 键 词：普通小麦 沉降值 和面时间 遗传力 早代选择 

分 类 号：S512.1[农业科学—作物学]