中国荞麦属果实形态特征

应用解剖镜和扫描电镜对中国产荞麦属FagopyrumMill.8种 1变种的果实形态和微形态特征进行了观察。结果表明这些种类的果实可分为 3类 :( 1 )果实三棱锥状 ,表面不光滑 ,无光泽 ,具皱纹网状纹饰 ,此种类型的植物有苦荞麦、金荞麦。 ( 2 )果实卵圆三棱锥状 ,表面光滑 ,有光泽 ,具条纹纹饰 ,此种类型的植物有荞麦、长柄野荞麦、线叶野荞麦。 ( 3)果实卵圆三棱锥状 ,表面光滑 ,有光泽 ,具大量的瘤状颗粒和少数模糊的细条纹纹饰 ,此种类型的植物有硬枝野荞麦、细柄野荞麦、小野荞麦、疏穗

Determination of the number of ψ(3686) events taken at BESIII

The number of ψ(3686) events collected by the BESIII detector during the 2021 run period is determined to be (2259.3±11.1)×106 by counting inclusive ψ(3686) hadronic events. The uncertainty is systematic and the statistical uncertainty is negligible. Meanwhile, the numbers of ψ(3686) events collected during the 2009 and 2012 run periods are updated to be (107.7±0.6)×106 and (345.4±2.6)×106, respectively. Both numbers are consistent with the previous measurements within one standard deviation. The total number of ψ(3686) events in the three data samples is (2712.4±14.3)×10^