酚酸與牧草萃取液對於萵苣種子與牧草扦插苗生長的影響

Effects of phenolic acids and extracts of pangolagrass and delhigrass on germination, radicle and epicotyl growth of lettuce seeds and grass cuttings

謝文彰(Wein-Chang Hsieh) ； 蔡文福(Wen-Fu Tasi)

《畜產研究》 39卷4期 (2006/12) Pp. 251-269

摘要

本研究的目的在探討酚酸與盤固草A254（Digitaria decumbens Stent.）、印度藍莖草A70（Dichanthium annulatum（Forsk.）Stapf）牧草萃取液對於萵苣種子發芽與牧草扦插苗生長的影響。試驗結果摘要如下：不同苯酸類酚酸以syringic acid對萵苣種子發芽抑制能力最大；不同肉桂酸類酚酸以caffeic acid對於萵苣種子發芽及幼苗生長的抑制能力最大。不同苯鹼化合物以p-hydroxybenzaldehyde對於種子發芽抑制力較大；苯酸類除草劑 dicamba對於萵苣種子發芽與幼苗生長的抑制能力大於α-chlorobenzoic acid。不同苯酸類以vanillic、p-hydroxybenzoic及salicylic acid對盤固草之扦插苗的抑制力最大。不同肉桂酸類以ferulic acid對於盤固草扦插苗發根的抑制力最大；對於印度藍莖草，則以caffeic acid的毒性最大。苯鹼化合物以saligenin抑制盤固草與印度藍莖草根生長的效果最大。盤固草與印度藍莖草之水溶萃取液均能抑制萵苣種子發芽與幼苗生長的生長。盤固草甲醇萃取液（經NaOH處理）對萵苣種子發芽的抑制力較印度藍莖草大；萃取液未經NaOH處理者，對於種子發芽並不影響。

關鍵字

盤固草 ； 印度藍莖草 ； 酚酸 ； 發芽 ； 扦插苗生長

並列摘要

The purposes of this study were to investigate the effects of phenolic acids and extracts of pangolagrass A254 (Digitaria decumbens Stent.) and delhigrass A70 [Dichanthium annulatum (Forsk.) Stapf] on the germination, radicle and epicotyl growth of lettuce seed and grasses cutting. Results were summarized as follows: Syringic acid, caffeic acid and p-hydroxybenzaldehyde derived from benzoic acid, cinnamicic acid and benzoic alkaloid, respectively, were most inhibitive to germination of lettuce seeds. As to herbicide of benzoic acid, dicamba was more toxic to germination and young seedings of lettuce than that of α-chlorobenzoic acid. For benzoic acids, vanillic and salicylic acid exerted the most inhibition to rooting of pangolagrass and delhigrass cuttings, while p-hydroxybenzoic acid had only inhibition to rooting of pangolagrass cuttings. For cinnamicic acids, ferulic acid was most inhibitive to rooting of pangolagrass cuttings, and caffeic acid did the same to the delhigrass cuttings. For the benzoic alkaloids, saligenin was most toxic to rooting of grass cuttings. Water extracts from both pangolagrass and delhigrass inhibited the germination of lettuce seeds. On the other hand, methanol extracts of pangolagrass treated by NaOH had more inhibition to the germination of lettuce seeds than that of delhigrass. Methanol extracts of grasses not treated with NaOH had no inhibition to the germination of lettuce seeds. In this study, benzoic acids had more inhibition to the germination of lettuce seeds than cinnamicic acids did. For the benzoic acids, syringic acid with 0.1 mM had the most inhibition to the germination of lettuce seeds, and the germination percentage of lettuce seeds was 29% of the control. Vanillic, p-hydroxybenzoic and salicylic acid with 0.1 mM were most toxic to the rooting of pangolagrass cuttings. Vanillic, salicylic and mhydroxybenzoic acid with 0.1 mM were most toxic to the rooting of delhigrass cuttings.

並列關鍵字

Pangolagrass ； Delhigrass ； Phenolic acid ； Germination ； Growth of grass cutting