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作者	单位
张向前，乔玉强，杜世州，赵竹	（1.安徽省农业科学院作物研究所,安徽合肥 230031； 2.安徽省农作物品质改良重点实验室,安徽合肥 230031）

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中文摘要:

为给安徽麦区旱播条件下小麦品种类型选择提供依据，通过2年多点（蒙城、阜南、濉溪）试验，比较分析了早播下不同类型小麦品种的叶片光合性能及籽粒灌浆特性。结果表明，早播下冬性品种烟农19和济麦20的叶片叶绿素含量最高，半冬性品种皖麦52和周麦22次之，偏春性品种豫麦70 36和周麦23最低。冬性品种叶面积指数和群体干物重显著高于偏春性品种。相同类型小麦品种间叶绿素荧光参数F_o、F_m、Fv/F_m、ETR和Φ_psII差异皆不显著，但冬性与偏春性品种间差异显著。冬性品种平均灌浆速率高于偏春性品种，穗数、穗粒数、千粒重和产量皆以冬性品种最高，其中蒙城点冬性品种烟农19产量比偏春性品种豫麦70 36和周麦23分别增加了37.6%和38.4%，济麦20的产量分别比豫麦70 36和周麦23增加了37.5%和38.3%。

英文摘要:

A two year experiment with three test sites (Mengcheng,Funan and Suixi) was conducted to study the differences in leaf photosynthetic characteristics and grain filling characteristics among different types of wheat varieties under early sowing. The results showed that under early sowing condition,the winter wheat varieties of YN19 (Yannong 19) and JM20 (Jimai 20) had the highest values of chlorophyll content,and followed by semi winter wheat varieties of WM52 (Wanmai 52) and ZM22 (Zhoumai 22),and the partial springness wheat varieties of YM70 36 (Yumai 70 36) and ZM23 (Zhoumai 23) were the lowest. The leaf area index and dry matter weight of the population of winter wheat varieties were significantly higher than that of partial springness wheat varieties. The differences in chlorophyll fluorescence parameters of F_o,F_m,Fv/F_m,ETR and Φ_psII were insignificant among the same types of wheat varieties under early sowing,but the differences between winter wheat and partial springness wheat varieties were significant. The mean grain filling rate of winter wheat variety was higher than that of partial springness wheat variety,and the winter wheat variety had the highest values of spike number,grains per spike,1000 kernel weight and yield,compared to partial springness wheat variety of YM70 36 and ZM23,at Mengcheng experimental site,the yields of winter wheat variety of YN19 and JM20 were significantly increased by 37.6%,38.4% and 37.5%,38.3%,respectively.

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