Requirement for the action of endogenous ethylene during germination of non‐dormant seeds of Amaranthus caudatus
Requirement for the action of endogenous ethylene during germination of non‐dormant seeds of Amaranthus caudatus
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非休眠尾苋种子萌发过程中内源乙烯作用的需要
DOI：
10.1111/j.1399-3054.1985.tb02816.x
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发表时间：
1985
期刊：
影响因子：
--
通讯作者：
C. M. Karssen
中科院分区：
文献类型：
--
作者：
J. Kępczyński;C. M. Karssen
内源乙烯在尾穗苋非休眠种子萌发中的作用。被查种子在24°C的水中和黑暗中容易发芽。乙烯或其前体I-氨基环丙烷-I-羧酸（ACC）的应用略有增加发芽率。两种化合物均能有效拮抗聚乙二醇的渗透抑制作用。氨基乙氧基乙烯基甘氨酸（AVG）的应用减少了90%的乙烯生产，但不抑制发芽。然而，发芽被抑制2，5-降冰片二烯，乙烯作用的竞争性抑制剂。乙烯、乙烯利或ACC可抵消这种抑制作用，而AVG可增强这种抑制作用。说明内源乙烯的作用是非休眠种子萌发过程中不可缺少的因素。尾状肌乙烯的作用是从吸胀开始就需要的。在水中，低水平的内源乙烯就足以发挥这一作用。PEG显著增加了乙烯需求。
The role of endogenous ethylene during germination of non-dormant seeds of Amaranthus caudatus L. was investigated. The seeds readily germinated in water and darkness at 24°C. Application of ethylene or of its precursor I-aminocyclopropane-I-carboxylic acid (ACC) slightly increased the rate of germination. Both compounds effectively antagonized osmotic inhibition by polyethyleneglycol. Application of aminoethoxyvinylglycine (AVG) reduced ethylene production by 90% but did not inhibit germination. However, germination was inhibited by 2,5-norbornadiene, a competitive inhibitor of ethylene action. This inhibition was counteracted by ethylene, ethephon or ACC and enforced by AVG. It is concluded that the action of endogenous ethylene is an indispensable factor during germination of non-dormant seeds of A. caudatus. Ethylene action is required from the start of imbibition on. In water, low levels of endogenous ethylene are sufficient for this action. PEG increased the ethylene requirement considerably.