著者

Chia Ting Han Yu Sung Ming-Tung Hsueh

出版者

The Japanese Society for Horticultural Science

雑誌

The Horticulture Journal (ISSN:21890102)

巻号頁・発行日

pp.UTD-387, (Released:2022-12-28)

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Winged bean seeds require imbibition treatment to ensure fast and uniform germination. Seed soaking has been commonly used; however, it is unclear if this is a safe method for winged bean seeds. Solid matrix priming (SMP) is an imbibition treatment that combines seeds, a matrix and water in a specific ratio. It allows seeds to imbibe under controlled water uptake. We investigated the effect of imbibition treatments on seed germination of white winged bean. Soaked seeds had significantly reduced germination and emergence as a result of imbibition injury due to rapid imbibition. SMP at a seed: vermiculite: water ratio of 7:12:9 (w/w/w) was the most effective treatment that allowed seeds to imbibe slowly without the occurrence of imbibition injury. SMP significantly reduced the mean germination time from 4.63 days to 2.01 days, and mean emergence time from 7.21 days to 5.78 days, compared to the control, as well as having a high germination rate of 98% and uniform emergence. The fast imbibition rate of white winged bean seeds was likely the result of cracks present on the permeable seed coat.

著者

Chang-Sheng Chien Wei-Ling Chen Yu Sung

出版者

The Japanese Society for Horticultural Science

雑誌

The Horticulture Journal (ISSN:21890102)

巻号頁・発行日

pp.UTD-386, (Released:2022-10-18)

被引用文献数

1

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In Taiwan, the early harvesting of young ginger is a cultivation technique for domestic ginger, which can be harvested early by forced sprouting. At present, ethylene is used as the sprouting agent. Despite its favorable sprouting effect, the technique can still be improved. Experimental results revealed that 1% citric acid, 300-ppm and 450-ppm ethephon treatments effectively facilitated the formation of 2.4, 2.4, and 2.6 large buds (diameter of ≥ 1 cm), respectively, in the rhizome. The stems and leaves of the ginger seed rhizomes that were subjected to forced sprouting emerged from the soil one month after planting, and emergence rates of 46.7% and 83.3% were achieved using citric acid and ethephon, respectively. Although the fresh weight of semi-matured ginger rhizomes obtained by forced sprouting treatment was lower, the results can still provide a reference for the early harvest of young ginger in Taiwan. Among the examined gingers, semi-matured ginger that was subjected to 50-ppm GA3 forced sprouting treatment exhibited the most favorable growth, and the average weight of its rhizomes reached 1,567 g, which was not significantly different from the weight obtained by conventional cultivation, but significantly greater than that obtained by other treatments. The GA3 forced sprouting treatment was not very effective, but it had an excellent effect on improving the yield of semi-matured ginger rhizomes. In the future, this treatment will be conducive for the production of semi-matured or matured ginger.

著者

Yu Sung Shih-Wen Chen

出版者

The Japanese Society for Horticultural Science

雑誌

The Horticulture Journal (ISSN:21890102)

巻号頁・発行日

pp.OKD-083, (Released:2018-03-20)

被引用文献数

3

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Currently, biofortification breeding programs are being conducted to increase the selenium (Se) content of crops. Se is an element essential to humans and is mostly acquired via consumption of vegetables. However, the effects of Se on the main plant metabolisms such as nitrogen metabolism are unclear. The main objective of this study was to determine the effect of the application of different concentrations of Se (10, 20, and 30 μM) as Na2SeO4 on nitrogen metabolism in Pak-choi grown hydroponically. Supplemental Se increased all enzyme activities analyzed, including nitrate reductase (NR), glutamine synthetase (GS), and glutamate synthase (GOGAT). In 20-μM Se treatment of two cultivars, the fresh weight was significantly increased and the foliar NO3− content was significantly decreased. Compared to the control, the data on Se treatments showed stronger activations of NR, GS, and GOGAT, as well as greater concentrations of total ammonium, amino acid, and protein, and a higher nitrogen use efficiency, resulting in increased biomass production. This suggests the mechanism of Se applied to Pak-choi to decrease NO3− content was due to increasing nitrogen metabolism and protein synthesis to biomass.