On the cover: ‘Successor’ barley on the David Brewer Farm, Oregon. See C.P. Morrissy, et al., “Registration of ‘Successor’ barley: A two#x02010;row, spring#x02010;habit, feed cultivar with tolerance to imidazolinone herbicides and adaptation to dryland production,” https://doi.org/10.1002/plr2.20303. Photo by Patrick Hayes.

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封面：俄勒冈州大卫布鲁尔农场的“继承者”大麦。参见 CP Morrissy 等人，“‘继承者’大麦的登记：两#x02010；行，春天#x02010；习性、对咪唑啉酮除草剂具有耐受性并适应旱地生产的饲料品种”，https://doi.org /10.1002/plr2.20303。帕特里克·海耶斯摄。