Allelopathy of Different Concentrations Hot Pepper Allelochemicals on Lettuce

doi:10.7668/hbnxb.2008.02.007

Abstract

Abstract: Allelopathy of different concentrations hot pepper allelochemicals on lettuce was researched through lettuce seed germination and seedling growth.The results showed that lettuce seed germination and seedling growth were affected by hot pepper aqueous extracts,methanol soluble fractions in aqueous extracts and its root exudates.When the concentration was low,lettuce seed germination and seedling growth were promoted,but when the concentration was high,they were inhibited.The effect on root growth was greater than that of the top.Allelopathic susceptivity was various at different growth stages of lettuce,and it was more susceptive at seedling stage than at germination stage.

Key words: Hot pepper, Allelopathy, Allelochemicals, Lettuce

CLC Number:

S641.3

GENG Guang-dong, CHENG Zhi-hui, ZHANG Su-qin,. Allelopathy of Different Concentrations Hot Pepper Allelochemicals on Lettuce[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2008, 23(2): 30-33. doi: 10.7668/hbnxb.2008.02.007.

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