大麦发育模型的生理参数研究——II.大麦花前光周期敏感与钝感阶段的生理参数研究

作物生育期的预测是作物动态模型的重要功能之一,而其中重要的一步就是确定作物对光周期反应的各个时期。前人研究将作物对光周期的反应分为光周期诱导前期(BVP)、诱导期(PSP)和诱导后期(PPP),本研究以大麦为例,通过不同光照时间试验,定量的确定大麦的光周期反应中的各个时期的天数及它们之间的变化规律,结果表明,利用BVP、PSP和PPP可以较好的反应大麦受光周期变化的影响;由短光照条件移到长光照条件下的诱导期PSPS大于由长光照条件移到短光照条件下的PSPL,且所获得的各个发育参数与长日条件下的最短发育天数具有显著相关,而与短日条件下的最长发育天数相关不显著;并根据大麦品系的花前生育期长短,将它们分为偏冬性、弱春性与强春性3个类型。

Studies on Physiological Parameters of Barley Development Model II. Studies on Physiological parameters of Photoperiodically Sensitive and (Insensitive) Phases of Preflowering Development in Barley

The prediction of crop development duration is one of the important functions of crop dynamic model. It is important to determine the period when the plant responds to photoperiod. In this paper, the period when the plant responds to photoperiod was determined through various daylight experiments. The result showed that three parameters: BVP, PSP and PPP reflect the effect of photoperiod on barley. The PSPs is longer than PSP_L; the parameters obtained from the experiments showed high relationship between the developmental parameters and the minimum development duration in long day, but no relationship with the maximum development duration in short day. Three types of barley were classified according to the preflowering development: winter-deflection type, weak spring type and strong spring type.