Improving crop competitive ability using allelopathy — an example from rice

• DOI: 10.1046/j.1439-0523.2002.00662.x
• Publication Date: 2003-03-12T16:17:32Z
• Authors: M. Olofsdotter; L. B. Jensen; B. Courtois
• Keywords: Allelopathy; Weedy rice; Germ plasm

Abstract The objective of this paper is to review the possibilities for using allelopathy improve overall crop competitive ability against weeds, rice, Oryza sativa , as an example. Laboratory, greenhouse and field screenings weed suppression in rice have been made allelopathic germplasm has identified laboratory screening. Field experiments revealed that accounted 34% rice. For strongly cultivars, was dominant factor determining ability. Based on results screenings, recombinant inbred line populations were developed identification quantitative trait loci (QTL) controlling allelopathy. Populations lines (RILs) derived through single‐seed descent from crosses between varieties with contrasting behaviour QTL identified. most probably also other cereal crops, findings presented can explain limited success previous breeding programmes competition, never before acknowledged important factor. indicate it possible marker‐assisted selection. Optimizing combination plant types could result cultivars superior weed‐suppressive