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Vernalization affects absorption and translocation of clopyralid and aminopyralid in rush skeletonweed (Chondrilla juncea)
Weed Science ( IF 2.5 ) Pub Date : 2020-06-19 , DOI: 10.1017/wsc.2020.50
Tara L. Burke , Ian C. Burke

The developmental status of perennial weeds such as rush skeletonweed (Chondrilla juncea L.) can influence herbicide absorption and translocation. Differential efficacy between fall and spring applications suggests vernalization impacts herbicide absorption and translocation in other perennial asters. Clopyralid and aminopyralid absorption and translocation were quantified in nonvernalized and vernalized plants following application of 14C-labeled herbicides 2, 4, 8, 24, and 72 h after treatment. Less 14C clopyralid was absorbed, and at a slower rate, in vernalized plants. Movement out of the treated leaf was slower, with 14C clopyralid translocating more rapidly than 14C aminopyralid. More 14C moved to the roots in nonvernalized plants compared with vernalized plants, regardless of herbicide. Increased translocation to belowground survival structures is needed for effective control of C. juncea.

中文翻译:

春化作用影响灯心草 (Chondrilla juncea) 中氯吡喃和氨基吡喃的吸收和转运

灯心草等多年生杂草的发育状况(芥菜L.) 会影响除草剂的吸收和转运。秋季和春季施用的不同功效表明,春化作用会影响其他多年生紫苑中除草剂的吸收和转运。在施用14处理后 2、4、8、24 和 72 小时 C 标记的除草剂。较少的14C clopyralid 在春化植物中以较慢的速度被吸收。离开处理过的叶子的运动较慢,与14C clopyralid 易位比14C氨基吡啶。更多的14与春化植物相比,C 移至未春化植物的根部,与除草剂无关。需要增加向地下生存结构的转移,以有效控制芥菜.
更新日期:2020-06-19
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