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首页> 外文期刊>Weed technology >Similar Fitness Between Large Crabgrass (Digitaria sanguinalis) Accessions Resistant or Susceptible to Acetyl-Coenzyme A Carboxylase Inhibitors
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Similar Fitness Between Large Crabgrass (Digitaria sanguinalis) Accessions Resistant or Susceptible to Acetyl-Coenzyme A Carboxylase Inhibitors

机译：乙酰辅酶A羧化酶抑制剂耐药或易感的大蟹草（Digitaria sanguinalis）种之间的相似适应性

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摘要

Experiments were conducted to determine the productivity and the competitive ability of a large crabgrass accession (PW2) resistant to acetyl-coenzyme A carboxylase (ACCase) inhibitors relative to a susceptible accession (A310). Under noncompetitive conditions in the field, shoot dry biomass and plant height over time were similar for the two accessions. Leaf area was slightly greater for A310 than for PW2. The instantaneous relative growth rate was similar for the accessions. The instantaneous net assimilation rate was slightly greater for A310 than for PW2; however, the instantaneous leaf area ratio was slightly greater for PW2 than for A310. At maturity, the seed yield was similar for the accessions. The inter-accession competitive ability of PW2 and A310 plants in the field was similar, based on shoot dry biomass or seed yield. In the greenhouse, interspecific competitive ability of the accessions with corn was similar, based on shoot dry biomass or seed yield. These results suggest that resistance to ACCase inhibitors is not associated with reduced fitness of the PW2 accession.
机译：进行实验以确定相对于易感种质（A310）的对乙酰辅酶A羧化酶（ACCase）抑制剂具有抗性的大型马唐种质（PW2）的生产力和竞争能力。在田间非竞争性条件下，两种材料的茎干生物量和随时间的株高相似。 A310的叶面积略大于PW2。这些种的瞬时相对增长率相似。 A310的瞬时净同化率略高于PW2。但是，PW2的瞬时叶面积比略大于A310。成熟时，这些种的种子产量相似。基于茎干生物量或种子产量，PW2和A310植物在田间的种间竞争能力相似。在温室中，基于茎干生物量或种子产量，种质与玉米的种间竞争能力相似。这些结果表明，对ACCase抑制剂的抗性与PW2的适应性降低无关。

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