1Key Laboratory of Biopesticide and Chemical Biology, FAFU, Fuzhou, Fujian, 350002, C/O, Ministry of Education, China.
2Institute of Agroecology, Fujian Agriculture and Forestry University, Fuzhou, Fujian, 350002, China.
*Correspondence Author. E. Mail: wenxiong181@163.com
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Two allelopathic rice cultivars [PI312777 and non-allelopathic Lemont from U.S.A.] were used as the donor plants and barnyardgrass (Echinochloa crusgalli L.) as the receiver plant. Each rice cultivar was co-cultured with barnyardgrass in hydroponic culture with low phosphorus level (0.5mg P/L). The PI312777 exposed to low phosphorus stress, suppressed the growth, reduced the protective activities of superoxide dismutase (SOD) and catalase (CAT) enzymes, but increased the free radical contents and membrane lipid peroxidation in barnyardgrass. The barnyardgrass's root activity and uptake of nitrogen (N), phosphorus (P) and potassium (K) was decreased, leading to lower dry weight in barnyardgrass.
Allelopathy, barnnyardgrass(Echinochloa crusgalli L.), rice (Oryza sativa L.), stress
