银杏叶水提物对小麦的化感作用研究

目的]研究银杏叶水提物对小麦种子萌发率、幼苗根长和苗高等方面的影响。方法]以蒸馏水处理小麦种子为对照,研究不同浓度银杏叶水提液对小麦生长影响的变化规律,并运用效应指数（RI）和平均效应指数（RM）对小麦幼苗生长进行总体评价。结果]随着银杏水提液处理浓度的增加,小麦种子萌发率、幼苗根长和苗高以及小麦鲜重均明显受抑制,其中对小麦根长的影响强度最大（MR=-5.187）;随处理浓度的增加,幼苗干重表现为增加趋势,但趋势不太明显;对各指标影响的强度依次为：根长〉苗高〉鲜重〉干重。结论]银杏叶水提液对小麦生长的化感作用总体表现为抑制作用,且在较高浓度下抑制作用更强。在复合种植的生产实践中,要充分考虑种间化感物的影响。

Study on the Allelopathy of the Aqueous Extract of Ginkgo to Wheat

Objective] The impact of the extract from ginkgo on the rate of seed germination root length and seedling height of wheat was researched. Method] The wheat seeds treated with distilled water being taken as CK,the principle of the different concentrations of aqueous extract of ginkgo affecting the wheat growth was experimented and the growth of wheat seedling was assessed with the effect index(RI) and the average effect index(RM). Results] With the concentration-increasing of the extract from ginkgo,the r...