Cuulong Delta Rice Research Institute, Co Do- Can Tho-Vietnam.
*Corresponding author: E-mail: duongvanchin@hcm.vnn.vn
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In Lab bioassay, the allelochemicals released from 19 Vietnamese improved indica rice varieties were studies on the seedlings growth of lettuce (Lactuca sativa), kale (Brassica oleracea) and weedy rice (Oryza sativa). Results revealed that AS 996 variety stimulated the root length (32.8%) of lettuce, while, most of the remaining varieties were inhibitory. The 8 rice varieties (OM 5930, OM 4900, OM 5900, OM 3536, OM 4498, OM 4059, OM 2395, OM 4887) proved highly allelopathic and caused reduction (51.6; 81.5 and 81.5%) in root length of lettuce, kale and weedy rice, hile, reduction in hypocotyl lengths was 50.7; 40.1 and 79.4%, respectively.
Allelopathy, inhibitory effect, rice, weedy rice
