Study of Allelopathic Activities Among four Species of Lolium multiflorum
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摘要: 采取琼脂混粉法, 研究多花黑麦草4个品种地下部分根和地上部分茎叶粉末添加物对受体马唐和猪殃殃的化感作用。结果表明, 多花黑麦草4个品种对猪殃殃和马唐幼苗生长存在化感抑制作用, 但4个品种间的化感作用大小各异, 以Maximus根和Barmega茎叶的粉末添加物对受体马唐幼苗的抑制作用最强。以Barmega根和Maximus、Jumbo茎叶的粉末添加物对受体猪殃殃幼苗的抑制作用最强。4个品种根的粉末添加物对受体苗高的抑制作用要强于茎叶粉末添加物, 对受体根长的抑制作用则是茎叶粉末添加物强于根的粉末添加物。Barmega在添加量为2.0g·L-1时, 供体根和茎叶对受体马唐苗高的抑制率分别为60.75%和46.76%。4个品种在5种添加量下对猪殃殃和马唐的苗高和根长均有一定程度的抑制作用, 总体趋势为对根的抑制作用要强于茎叶, 随着添加量的增加, 抑制作用逐渐增强, 但1.5g·L-1和2.0g·L-1添加量间差异不显著, 0.50、0.75和1.0g·L-1间差异显著。Abstract: The research used PPA method to study of allelopathic activities among four species of Lolium multiflorum.Digitaria sanguinalis and Galium tricorne was used as the receiver plants.The results showed that the seeding growth were inhibited obviously by four species of Lolium multiflorum.The powder additives of Maximus′root and mixture of Barmega′s stem and leaf had the strongest effect on Digitaria sanguinalis.The powder additives of Barmega′root and mixture of stem and leaf of Maximus and Jumbo had the strongest effect on Galium tricorne.Among four species, the inhibitory effect of the root powder additive was stronger than the stem and leaf mixture on seeding height of receptor, and the stem and leaf mixture was stronger than the root on root length of receptor.The inhibition rates on seeding height of Galium tricorne were 60.75%and 46.76%respectively when treated 2.0g/L of the root and mixture of stem and leaf powder.The five addition levels of four species had a certain degree of inbibiton on Digitaria sanguinalis and Galium tricorne.The overall trend is that with the increase of adding amount, the inhibition enhanced gradually, especially in three adding levels of 0.50g/L, 0.75g/L and 1.0g/L (P<0.05) .
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Key words:
- Lolium multiflorum /
- allelopathy /
- Digitaria sanguinalis /
- Galium tricorne
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