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作者	单位
张博，白斌，张雪婷，杨智全，王晓龙，张晓科	（1.西北农林科技大学农学院/国家小麦改良中心杨凌分中心，陕西杨凌 712100；2.甘肃省农业科学院小麦研究所，甘肃兰州 730070）

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中文摘要:

为了明确甘肃小麦春化和光周期基因的分布特点，利用STS标记对96份品种的主要春化基因位点 VRN-A1、 VRN-B1、 VRN-D1、 VRN-B3和光周期基因 PPD-D1位点的等位变异组成进行了检测和分析。结果表明，在甘肃小麦品种中，春化和光周期基因等位变异组合存在11种类型，每种类型的分布频率不同。其中， Ppd-D1a类型频率最高， Vrn-A1/ Vrn-B1/ Ppd-D1a 次之。在春麦生态区存在11种组合类型，其中 Vrn-A1/Vrn-B1/Ppd-D1a频率最高， Ppd-D1a次之。在河西灌溉春麦区、中部干旱春麦区与洮岷高寒春麦区频率最高的组合类型分别为 Vrn-A1/Vrn-B1/Ppd-D1a、Vrn-A1/Vrn-B1和 Ppd-D1a。与春麦生态区相比，冬麦生态区不存在春化基因显性变异 Vrn-A1，且仅存在 Ppd-D1a、Vrn-B1/Ppd-D1a、Vrn-D1/Pp-D1a三种类型的等位变异组合，其中， Ppd-D1a类型频率最高， Vrn-B1/Ppd-D1a次之。在陇南冬麦区、渭河上游冬麦区、泾河上游冬麦区中，基因组合类型 Ppd-D1a均占主导地位，分布频率依次为46.2%、93.6%和100%。

英文摘要:

In order to survey the distribution of vernalization and photoperiod genes in wheat varieties from Gansu province,96 varieties were characterized with STS markers for the vernalization and photoperiod loci VRN-A1,VRN-B1,VRN-D1,VRN-B3 and PPD-D1.There were eleven types of combination of vernalization and photoperiod genes in these varieties. Each region contained different frequencies of each combination type. Ppd-D1a showed highest frequency,followed by Vrn-A1/Vrn-B1/Ppd-D1a. There were eleven types of combination in spring wheat region. Vrn-A1/Vrn-B1/Ppd-D1a type showed the highest frequency,followed by Ppd-D1a. Vrn-A1/Vrn-B1/Ppd-D1a,Vrn-A1/Vrn-B1 and Ppd-D1a showed the highest frequencies in Hexi irrigated spring wheat region,central arid spring wheat region and Taomin cold spring wheat region,respectively. There was no Vrn-A1 allele in winter wheat region,where only three types of combination ( Ppd-D1a,Vrn-B1/Ppd-D1a,Vrn-D1/Pp-D1a) can be detected. Ppd-D1a showed the highest frequency,followed by Vrn-B1/Ppd-D1a type. Ppd-D1a type accounted the highest frequencies in Longnan winter wheat region,Wei river upstream winter region and Jing river upstream winter wheat region for 46.2%,93.6%,and 100%,respectively.

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