Azis Haidar Rafid, Takahashi Shinya, Koshiyama Masami, Fujisawa Hiroshi, Isoda Hiroko
Alliance for Research on the Mediterranean and North Africa (ARENA), University of Tsukuba, Tsukuba 305-8572, Japan.
Faculty of Life and Environmental Sciences, University of Tsukuba, Tsukuba 305-8572, Japan.
Plants (Basel). 2020 Oct 15;9(10):1368. doi: 10.3390/plants9101368.
Prohydrojasmon (PDJ) can improve the polyphenol and anthocyanin content and antioxidant activity of some crop plants, but it also shows a suppressive effect on the plant growth. This study aimed to investigate the inhibitory effect of PDJ on the growth of two crop plants: komatsuna ( var. ) and eggplant (). We applied various concentrations of PDJ drip-wise or by spraying to eggplant and komatsuna seedlings and made detailed observations of growth. In general, no significant suppressive effect of PDJ was observed in the aerial parts in both plants. However, a significant inhibitory effect was found in roots treated with PDJ at concentrations of 600 and 1000 ppm. Interestingly, komatsuna treated with PDJ at a concentration of 200 ppm in both approaches resulted in a significant increase in root weight up to 37%. At a concentration range of 200-400 ppm, PDJ showed no inhibitory effects, and in some cases slightly promoted root growth. Therefore, this could be the recommended concentration range. We conclude that application of PDJ can still be beneficial to the vegetable crops without causing serious inhibition or suppression effects on the growth, as long as it is kept at rather low concentrations.
原胡茉莉素（PDJ）能提高一些农作物的多酚和花青素含量以及抗氧化活性，但它对植物生长也有抑制作用。本研究旨在探究PDJ对两种农作物——小松菜（品种 ）和茄子（品种 ）生长的抑制作用。我们将不同浓度的PDJ以滴灌或喷雾的方式施用于茄子和小松菜幼苗，并对其生长进行了详细观察。总体而言，在两种植物的地上部分均未观察到PDJ有显著的抑制作用。然而，在根部用600和1000 ppm浓度的PDJ处理时，发现有显著的抑制作用。有趣的是，用两种方法以200 ppm浓度的PDJ处理小松菜时，根部重量显著增加，最高可达37%。在200 - 400 ppm的浓度范围内，PDJ没有抑制作用，在某些情况下还略微促进了根部生长。因此，这可能是推荐的浓度范围。我们得出结论，只要将PDJ保持在相当低的浓度，其施用对蔬菜作物仍可能有益，而不会对生长造成严重的抑制或压制作用。
