Interference of allelopathic wheat with different weeds

Abstract

Interference of allelopathic wheat with weeds not only is determined by the specificity of the weeds but also depends on root-root interactions. In particular, allelopathic wheat may detect certain weeds through the root exudates and respond by increasing the allelochemical, resulting in weed identity recognition.

Recent advances in allelopathy for weed control: from knowledge to applications

“…In addition to rye, interactions of wheat with different weeds have been studied . Of the 38 weeds studied, nine were significantly affected, especially Eleusine indica , but also Sonchus avensis , Lamium amplexicaule , Alopecurus aequalis , Kummerowia striata , Rumex japonicas , Chenopodium serotinum , Taraxacum mongolicum and Capsella bursa‐pastoris .…”

Interference of allelopathic rice with penoxsulam‐resistant barnyardgrass

“…In this study, penoxsulam‐resistant and ‐susceptible barnyardgrass biotypes were not significantly different in their response to rice allelochemicals, indicating that the inhibition of allelopathic rice on the growth of resistant and susceptible barnyardgrass involves multiple factors rather than allelochemicals only. In particular, below‐ground ecological interactions greatly affect crop–weed allelopathic action . Plant interactions within a mixed‐species system occur as component species strive to capture growth resources above‐ and below ground, but below‐ground interactions affect the performance of coexisting plants more than aboveground interactions .…”

“…In particular, below-ground ecological interactions greatly affect crop-weed allelopathic action. 31 Plant interactions within a mixed-species system occur as component species strive to capture growth resources above-and below ground, but below-ground interactions affect the performance of coexisting plants more than aboveground interactions. 32 In this study, allelopathic rice inhibited barnyardgrass root growth more than shoot growth, regardless of biotypes.…”

Winter mulches and chemical control on weeds in maize

“…Além disso, algumas espécies de coberturas mortas quando em decomposição pode liberar aleloquímicos, que, por sua vez, exercem influência sobre a germinação e desenvolvimento das plantas daninhas (FAROOQ et al, 2011;JABRAN et al, 2015;MORAES et al, 2013;SADEGHPOUR et al, 2014;ZANUNCIO et al, 2013;ZHANG et al, 2016). Tais efeitos foram encontrados, por exemplo, em mucunapreta (Mucuna aterrima) que apresentou o maior efeito alelopático sobre a biomassa seca, número e porcentagem de germinação de tubérculos de tiririca (ZANUNCIO et al, 2013).…”

“…Moraes et al (2013) também relataram redução no número de plantas daninhas emergidas com o uso de cobertura de azevém, além de favorecer o desempenho produtivo do milho. Zhang et al (2016) inferem que as atividades alelopáticas são determinadas pela especificidade entre as plantas daninhas, e envolvem um amplo espectro de espécies de forma independente, ou em sinergia com fatores competitivos. Ressalta-se que o contato e a liberação dos aleloquímicos também podem ser facilitados por microrganismos de modo que os aleloquímicos promoveriam as atividades dos microrganismos do solo favorecendo as plantas cultivadas (JABRAN et al, 2015).…”