控制埋在土中杂草种子萌发的挥发性代谢物
Volatile metabolites controlling germination in buried weed seeds.
机构信息
Diamond Shamrock Corporation, T. R. Evans Research Center, P. O. Box 348, Painesville, Ohio 44077.
出版信息
Plant Physiol. 1972 Aug;50(2):293-7. doi: 10.1104/pp.50.2.293.
Abstract
Velvetleaf (Abutilon theophrasti Medic), morning glory (Ipomoea purpurea [L.] Roth), and wild mustard (Brassica kaber [D.C.] L. C. Wheeler) seeds exhibited decreased germination with increased planting depth in soil. Flushing the soil for 2 minutes each day with air overcame the inhibition. A sealed in vitro system was used to sample the volatile components produced by weed seeds. Inhibition of seed germination was accompanied by decreased O(2) levels and production of volatile metabolites identified as acetaldehyde, ethanol, and acetone. The effectiveness of these compounds in reducing germination was dependent on O(2) levels.
摘要
苘麻（Abutilon theophrasti Medic）、牵牛花（Ipomoea purpurea [L.] Roth）和野生芥菜（Brassica kaber [D.C.] L. C. Wheeler）的种子在土壤中的种植深度增加，发芽率下降。每天用空气冲洗土壤 2 分钟可以克服这种抑制作用。使用密封的体外系统来采样杂草种子产生的挥发性成分。种子发芽抑制伴随着 O(2)水平降低和挥发性代谢物的产生，这些代谢物被鉴定为乙醛、乙醇和丙酮。这些化合物降低发芽率的效果取决于 O(2)水平。
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