干旱区生态环境知识资源中心(Arid): Effect of water deficit stress on benzoylprop-ethyl performance and physiological traits of winter wild oat (Avena sterilis subsp. ludoviciana)

Arid

DOI	10.1016/j.cropro.2020.105292
	Effect of water deficit stress on benzoylprop-ethyl performance and physiological traits of winter wild oat (Avena sterilis subsp. ludoviciana)
	Alizade, Saeid; Keshtkar, Eshagh; Mokhtasi-Bidgoli, Ali; Sasanfar, Hamidreza; Streibig, Jens C.
通讯作者	Keshtkar, E
来源期刊	CROP PROTECTION
ISSN	0261-2194
EISSN	1873-6904
出版年	2020
卷号	137
英文摘要	Increasing the diversity in the sites of action of herbicides is an important method for delaying and preventing herbicide resistance in weed populations. Benzoylprop-ethyl, a lipid biosynthesis inhibitor, is used to increase the diversity of herbicide sites of action and control ACCase- and ALS-resistant Avena sterilis subsp. ludoviciana (Durieu.) Gillet & Magne) populations in Iran. Drought stress, especially in arid and semiarid areas, affects weed physiology and performance of herbicides. Accordingly, a series of dose-response assays was conducted to evaluate the efficacy of benzoylprop-ethyl under drought-(60% Field Capacity) and non-drought-stress (90% Field Capacity) conditions on A. sterilis subsp. ludoviciana. Also, some biochemical and physiological traits of A. sterilis subsp. ludoviciana including leaf chlorophyll content, leaf greenness index, photosynthesis rate and stomatal conductance were investigated under the drought and non-drought regimes. The efficacy of benzoylpmp-ethyl decreased significantly under drought condition. The effective dose reducing dry weight by 90% in relation to the untreated control (i.e., ED90) for the drought-stressed plants was significantly (P < 0.01) higher than that of the non-drought-stressed plants, where it was 895 (+/- 112.6) and 1543 (+/- 205.3) g a.i. ha(-1), respectively. The drought index (the ratio of the ED90 at 60% FC relative to ED(90 )at 90% FC) was 1.68 (+/- 0.16) and thus, significantly higher than 1. Leaf chlorophyll content (chl a and chl b) and leaf greenness index increased under drought conditions, while the photosynthesis rate, stomatal conductance, and the chl a/b decreased. The efficacy reduction of benzoylpmp-ethyl on drought-stressed plants might be due to photosynthesis reduction and reduced stomatal conductance leading to reduced herbicide uptake. Tracking local weather forecasts, monitoring water soil content and irrigating the field before herbicide application were suggested to overcome the detrimental effect of drought stress on the efficacy of benzoylprop-ethyl. Potential tactics such as using adjuvants, different formulations and early application timing of benzoylprop-ethyl to tackle the problem were proposed for future studies.
英文关键词	Herbicide efficacy Drought index Stomatal conductance Chlorophyll content Photosynthesis rate Winter wild oat Sterile oat
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000566399100011
WOS关键词	CHLOROPHYLL FLUORESCENCE ; PHOTOSYNTHESIS ; DROUGHT ; PHYTOTOXICITY ; GLYPHOSATE ; EFFICACY ; GROWTH ; CO2
WOS类目	Agronomy
WOS研究方向	Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/326063
作者单位	[Alizade, Saeid; Keshtkar, Eshagh; Mokhtasi-Bidgoli, Ali] Tarbiat Modares Univ, Fac Agr, Dept Agron, POB 14115-336, Tehran, Iran; [Sasanfar, Hamidreza] Agr Res Educ & Extens Org AREEO, Iranian Res Inst Plant Protect, Tehran, Iran; [Streibig, Jens C.] Univ Copenhagen, Fac Sci, Dept Plant & Environm Sci, Hojbakkegard 13, DK-2630 Taastrup, Denmark
推荐引用方式 GB/T 7714	Alizade, Saeid,Keshtkar, Eshagh,Mokhtasi-Bidgoli, Ali,et al. Effect of water deficit stress on benzoylprop-ethyl performance and physiological traits of winter wild oat (Avena sterilis subsp. ludoviciana)[J],2020,137.
APA	Alizade, Saeid,Keshtkar, Eshagh,Mokhtasi-Bidgoli, Ali,Sasanfar, Hamidreza,&Streibig, Jens C..(2020).Effect of water deficit stress on benzoylprop-ethyl performance and physiological traits of winter wild oat (Avena sterilis subsp. ludoviciana).CROP PROTECTION,137.
MLA	Alizade, Saeid,et al."Effect of water deficit stress on benzoylprop-ethyl performance and physiological traits of winter wild oat (Avena sterilis subsp. ludoviciana)".CROP PROTECTION 137(2020).