Differential morphological and physiological responses of two oilseed Brassica species to a new herbicide ZJ0273 used in rapeseed fields
Differential morphological and physiological responses of two oilseed Brassica species to a new herbicide ZJ0273 used in rapeseed fields
复制标题
两种油菜芸苔属植物对油菜田新型除草剂ZJ0273的不同形态和生理反应
DOI：
10.1016/j.pestbp.2010.04.002
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发表时间：
2010-09-01
影响因子：
4.7
通讯作者：
Zhou, W. J.
中科院分区：
文献类型：
--
作者：
Jin, Z. L.;Zhang, F.;Zhou, W. J.
杂草被认为是油菜芸苔属作物生产的主要威胁。使用对农作物安全且能有效控制杂草的除草剂对于农艺师和农民来说至关重要。 4-(2-(4,6-二甲氧基嘧啶-2-基氧基)苄氨基)苯甲酸丙酯(ZJ0273)是2-嘧啶氧基-N-芳基苯甲酸酯的衍生物，是一种用于油菜田的新型除草剂。为了评估芸苔属物种对这种新除草剂的耐受性，两个油菜品种Brassica napus cv. ZS 758 和芸苔 cv.小油菜采用100、500、1000 mg/L的ZJ0273叶面喷施和100 mg/L的现行ALS（乙酰乳酸合成酶）抑制性除草剂双草醚钠（BS）进行叶面喷施试验。结果表明，与 BS 相比，两个芸苔品种受 ZJ0273 的影响较小。 ZJ0273 除草剂浓度从 100 mg/L 增加至 1000 mg/L 增加了两个品种植物的胁迫，丙二醛含量积累增加表明。 ALS和抗氧化酶（超氧化物歧化酶和过氧化物酶）的活性、可溶性蛋白和糖含量、光合系统（SPAD值、光合速率和叶绿素荧光）以及农艺性状也随着ZJ0273浓度的每次连续增加而一致下降。一般来说，用100 mg/L ZJ0273处理的植物在28天后从除草剂胁迫中恢复。甘蓝型油菜比白油菜对新除草剂表现出更强的耐受性。然而，施用 100 mg/L 的 BS 并没有让两个品种的植物从除草胁迫中恢复。 (C) 2010 Elsevier Inc. 保留所有权利。
Weeds are considered as a major threat to the production of oilseed Brassica crops. The use of herbicides that are safe for crops and effective in controlling weeds is crucial for the agronomists and farmers. Propyl 4-(2-(4,6-dimethoxypyrimidin-2-yloxy)benzylamino)benzoate (ZJ0273), a derivative of 2-pyrimidinyloxy-N-aryl benzoate, is a new herbicide used in the rapeseed field. To evaluate the tolerance of Brassica species against this new herbicide, two cultivars of rapeseed Brassica napus cv. ZS 758 and Brassica rapa cv. Xiaoyoucai were tested by a foliar spray of ZJ0273 at the rate of 100, 500 and 1000 mg/L and a currently used ALS (acetolactate synthase)-inhibiting herbicide bispyribac-sodium (BS) at the rate of 100 mg/L. The results showed that both the cultivars of Brassica were less affected by ZJ0273 as compared to BS. Increasing level of ZJ0273 herbicide from 100 to 1000 mg/L increased the stress for the plants of both the cultivars as indicated by enhanced accumulation of malondialdehyde content. The activities of ALS and antioxidant enzymes (superoxide dismutase and peroxidase), soluble protein and sugar contents, photosynthetic system (SPAD value, photosynthetic rate and chlorophyll fluorescence) as well as the agronomic characters also declined consistently with each successive increase in ZJ0273 concentration. In general, the plants treated with 100 mg/L ZJ0273 recovered from the herbicide stress after 28 days. B. napus showed more tolerance than B. rapa to the new herbicide. Nevertheless, BS application at 100 mg/L did not allow the plants of both the cultivars to recover from the herbicidal stress. (C) 2010 Elsevier Inc. All rights reserved.