Department of Plant Sciences, Texas A&M University, College Station, Texas 77843.
Plant Physiol. 1971 Apr;47(4):488-92. doi: 10.1104/pp.47.4.488.
Germination, ethylene production, and carbon dioxide production by dormant Virginia-type peanuts were determined during treatments with plant growth regulators. Kinetin, benzylaminopurine, and 2-chloroethylphosphonic acid induced extensive germination above the water controls. Benzylaminopurine and 2-chloroethylphosphonic acid increased the germination of the more dormant basal seeds to a larger extent above the controls than the less dormant apical seeds. Coumarin induced a slight stimulation of germination while abscisic acid, 2,4-dichlorophenoxyacetic acid, and succinic acid 2,2-dimethylhydrazide did not stimulate germination above the controls. In addition to stimulating germination, the cytokinins also stimulated ethylene production by the seeds. In the case of benzylaminopurine, where the more dormant basal seeds were stimulated to germinate above the control to a larger extent than the less dormant apical seeds, correspondingly more ethylene production was induced in the basal seeds. However, the opposite was true of kinetin for both germination and ethylene production. When germination was extensively stimulated by the cytokinins, maximal ethylene and carbon dioxide evolution occurred at 24 and 72 hours, respectively. Abscisic acid inhibited ethylene production and germinaton of the seeds while carbon dioxide evolution was comparatively high. The crucial physiological event for germination of dormant peanut seeds was enhancement of ethylene production by the seeds.
休眠型弗吉尼亚型花生在植物生长调节剂处理过程中，其发芽、乙烯生成和二氧化碳生成情况得以确定。激动素、苄氨基嘌呤和 2-氯乙基膦酸诱导的发芽水平明显高于水对照。苄氨基嘌呤和 2-氯乙基膦酸使更休眠的基种子的发芽程度比对照更显著地高于较不休眠的顶种子。香豆素诱导轻微的发芽刺激，而脱落酸、2,4-二氯苯氧乙酸和琥珀酸 2,2-二甲基酰肼在对照以上没有诱导发芽。除了刺激发芽外，细胞分裂素还刺激种子的乙烯生成。在苄氨基嘌呤的情况下，更休眠的基种子比对照更显著地刺激发芽，相应地在基种子中诱导更多的乙烯生成。然而，对于激动素，无论是在发芽还是在乙烯生成方面，情况都是相反的。当细胞分裂素广泛地刺激发芽时，最大的乙烯和二氧化碳释放分别发生在 24 小时和 72 小时。脱落酸抑制种子的乙烯生成和发芽，而二氧化碳释放则相对较高。休眠型花生种子发芽的关键生理事件是种子中乙烯生成的增强。
