冬季野生燕麦生物型对Haloxyfop-R甲酯抗性的适应度成本比较

IF 0.8 Q3 Agricultural and Biological Sciences
S. Hassanpour-bourkheili, J. Gherekhloo, B. Kamkar, S. Ramezanpour
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引用次数: 5

摘要

摘要:连续施用除草剂导致了抗除草剂杂草的进化。这种阻力通常与健康成本有关。为此,采用3个重复的完全随机设计试验,对具有Ile-2041-Asn突变的冬季野生燕麦(Avena ludoviciana Durieu)抗haloxyfop-R甲酯生物型与敏感生物型的适合度成本进行了评价。将预发芽的F2代冬季野生燕麦生物型播种于室外含50 cm粉壤土的0.2 m2盆栽中,在播种30、70、100、115和130 d后测定其分蘖数、株高、单株叶片、单株叶面积、叶绿素含量指数、叶片干重和植株干重等生长参数。计算叶面积指数、叶面积比、比叶面积、相对生长率、净同化率和作物生长率。在生育期结束时测定种子产量、千粒重和面叶面积。结果表明,易感型和抗性生物型之间未观察到适应度成本,表明易感型在田间可能无法克服抗性生物型。尽管通过施用具有不同作用模式的除草剂施加新的选择压力可以控制易感和抗性生物型,但必须适应除草剂轮作以阻止进一步的抗性进化。同样,可以采用非化学杂草管理方法,如谨慎选择播种日期,以改善该杂草对作物生产的不利影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Comparing Fitness Cost Associated with Haloxyfop-R Methyl Ester Resistance in Winter Wild Oat Biotypes
ABSTRACT: Consecutive application of herbicides has led to the evolution of herbicide-resistant weeds. This resistance is often associated with a fitness cost. Hence, a completely randomized design experiment with three replications was conducted to evaluate the fitness cost of haloxyfop-R methyl ester resistant winter wild oat biotypes (Avena ludoviciana Durieu) possessing Ile-2041-Asn mutation compared to susceptible ones. The pre-germinated F2 generation winter wild oat biotypes were sown in 0.2 m2 pots containing 50 cm of silty-loam soil outdoors and their growth parameters including tiller number, plant height, leaves per plant, leaf area per plant, chlorophyll content index, leaf dry weight, and plant dry weight were measured 30, 70, 100, 115 and 130 days after planting. Leaf area index, leaf area ratio, specific leaf area, relative growth rate, net assimilation rate, and crop growth rate were also calculated. Seed production, 1000 kernel weight, and flag leaf area were measured at the end of the growth period. According to the results, no fitness cost was observed between susceptible and resistant biotypes, indicating that susceptible biotypes may not overcome resistant ones in the field. Although imposing a new selective pressure via application of an herbicide possessing a different mode of action may control both susceptible and resistant biotypes, herbicide rotation must be adapted to impede the evolution of further resistance. Also, the same non-chemical weed management methods such as careful selection of sowing date can be implemented to ameliorate adverse effects of this weed on crop production.
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来源期刊
Planta Daninha
Planta Daninha Agricultural and Biological Sciences-Plant Science
自引率
0.00%
发文量
0
审稿时长
16 weeks
期刊介绍: Planta Daninha is a scientific journal published by the Brazilian Society of Weed Science (SBCPD - Sociedade Brasileira da Ciência das Plantas Daninhas). Papers submitted for publication must be sent through an electronic system, on http://www.scielo.br/pd. Works may be written in Portuguese, English, or Spanish, and will be accepted after being reviewed and approved by the Editorial Board. Only papers that have not been published or submitted for publication in other media will be accepted. Articles in Portuguese will be translated to English after being properly corrected and authorized by the authors. Planta Daninha has with goal to publish genuine technical-scientific papers and literature reviews from a critical perspective on Biology, weed management, and related topics.
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