Assessing Genetic Variation and Spread of Phalaris minor Resistant to ACCase Inhibiting Herbicides in Iran

IF 0.8 Q3 Agricultural and Biological Sciences

Planta Daninha Pub Date : 2020-01-01 DOI:10.1590/s0100-83582020380100026

J. Gherekhloo, R. Alcántara-de la Cruz, M. D. Osuna, S. Sohrabi, R. Prado

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引用次数: 4

Abstract

ABSTRACT: Littleseed canarygrass (Phalaris minor) is the second most serious and problematic grass weed in wheat fields in Iran, and has developed resistance to ACCase inhibiting herbicides. Inter-simple sequence repeat (ISSR) analysis was used to assess genetic variation between and within ACCase inhibitor-resistant and susceptible P. minor populations in Iran and to determine the origin of resistance and its dispersal. Sixteen P. minor populations from different regions in Iran were analysed using seven primers. Genetic relationships generated using UPGMA analysis indicated the presence of more than one genotype among the herbicide resistant populations. The results indicated that the high genetic similarity and physical proximity among the resistant P. minor populations in the different regions is mainly due to cross pollination, mechanical seed dispersion and local ecological factors. These findings suggested that independent selection as well as movement of resistant seeds had occurred, which could explain the presence and dispersion of ACCase inhibitor-resistance in these populations.

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伊朗小蝴蝶兰抗ACCase除草剂的遗传变异及传播评价

摘要:小籽金丝雀草(Phalaris minor)是伊朗小麦种植区危害第二大的杂草，对ACCase抑制剂产生了抗性。采用ISSR分析方法，对伊朗地区ACCase抑制剂耐药群体和易感群体之间和内部的遗传变异进行了分析，并确定了耐药的起源及其传播。利用7条引物对来自伊朗不同地区的16个小蠊种群进行了分析。UPGMA分析产生的遗传关系表明，抗除草剂群体中存在不止一种基因型。结果表明，不同地区小白杨抗性群体间遗传相似性和物理接近性较高，主要原因是异花传粉、种子机械传播和当地生态因素。这些结果表明，抗性种子发生了独立的选择和运动，这可以解释这些群体中ACCase抑制剂抗性的存在和扩散。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Planta Daninha Agricultural and Biological Sciences-Plant Science

自引率

0.00%

发文量

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.