冀东冬小麦灌浆期与千粒重的关系

The Relation of Grain Filling Period and 1000 Kernels Weight of Winter Wheat in East Area of Heber

通过对 195份冬小麦资源品种 (系 )的抽穗期、灌浆时间与千粒重的试验分析表明 ,冀东冬小麦的抽穗期主要在 5月 1日～ 5月 14日之间 ,而 5月 7～ 5月 13日是抽穗的高峰期 ,达到总量的 80 4 % ;灌浆时间在 35～ 4 5d之间 ,以 37～ 4 1d的品种最多 ,占品种总数的88 2 %。随抽穗期的推迟、灌浆期的缩短 ,千粒重呈显著下降趋势 ,相关系数分别为r =-0 4 36 5和r =0 892

The experiment for 195 winter wheat cultivars (varieties) was studied on the relationship among heading stage, grain filling period and 1000 kernels weight The results indicated that the majority of wheat cultivars (varieties) had headed between May the first and May 14th, and 80 4 percent of all headed from May 7th to 12th The grain filling period was 35～45 days, such kind of winter wheat cultivars (varieties) whose grain lasted filling period were between 37～41 days had occupied to tally number of 88 2 percent With the trenchancy of delayed heading stage, shorted filling period as well as decreased 1000 kernels weight significantly, its correlation index shall be r=-0 4365 and r=0 8924 respectively