Allelopathic potential and volatile compounds of Manihot esculenta Crantz against weeds

作者：Li, J.; He, S. Y.; Qin, X. D.^*

来源：Allelopathy Journal, 2016, 37(2): 195-206.

• Allelopathy
• aqueous
• GCMS
• leachates
• Lolium perenne
• Manihot esculenta
• Medicago sativa
• Sorghum sudanense
• root
• shoot
• soil
• volatile compounds

We determined the allelopathic effects of aqueous leachates from fresh roots, stems, leaves and dried leaf litter of Manihot esculenta on three weed species (Medicago sativa L., Lolium perenne L. and Sorghum sudanense (Piper) Stapf.). The aqueous leachates of roots, stems and leaf at 50 and 100 mg/ml concentrations and leaf litter leachate at 3 and 5 mg/ml inhibited the seed germination and seedling growth of all tested weed species. Soil in which cassava cv. 'South China 5 (SC5)' was grown, also significantly inhibited the root and shoot length of Medicago sativa and Lolium perenne and the root length of Sorghum sudanense. The chemical constituents of volatile compounds from fresh Manihot esculenta roots, stems and leaves were analyzed by GCMS. The major constituents of volatile compounds in cassava were: (i). Roots : hexadecane, 2,6,11,15-tetramethyl-, dodecane, 2,7,10-trimethyl- and undecane, (ii). Stems: 9,17-octadecadienal, (Z)- and cis, cis, cis-7,10,13-hexadecatrienal and (iii). Leaves : Nonanal, Caryophyllene oxide, Tetradecanal. Both laboratory and pot experiments showed that Manihot esculenta was allelopathic to the tested weed species.

• 出版日期2016-3
• 单位中国热带农业科学院