摘要
[目的]研究不同生育期桔梗对湿害逆境的生长指标响应.[方法]分别在苗期、拔节期、花期、果期对桔梗进行湿害处理,测定株高、主茎粗度、最大叶长、最大叶宽、分枝数、地上干重、地下鲜重、地下干重、总皂苷含量,比较4个生育期中生长指标的耐湿性差异.[结果]湿害处理下,不同生育期桔梗生长指标响应有所差异,耐湿性不同,拔节期耐湿性最弱.[结论]该研究为指导桔梗大田栽培提供理论依据.
Abstract
[Objective] To study the effect of waterlogging stress on growth indexes of Platycodon grandiflorum at different growth stages.[Method] With the continuous waterlogging stress treatment to P.grandiflorum at seedling stage, jointing stage, flowering stage and fruit stage, plant height, stem diameter, maximum leaf length and width, number of branches, fresh mass on the ground, fresh mass and dry mass of underground part and content of total saponin were determined, and the differences of waterlogging tolerance were compared.[Result] With the continuous waterlogging stress treatment, the growth indexes varied in different growth stages and the tolerance to waterlogging stress was different.At the jointing stage, P.grandiflorum had the worst waterlogging tolerance.[Conclusion]The study provided a theoretical basis for guiding the field cultivation of P.grandiflorum under waterlogging stress.
国家科技期刊平台
NSTL
维普
万方数据