ศูนย์นวัตกรรมเทคโนโลยีหลังการเก็บเกี่ยว

Nitrous oxide inhibits in vitro growth of multiple postharvest fungi.

Qadir, A., and Hashinaga, F.

HortScience. Volume 36, Number 7, 2001. Pages 1302-1304.

2001

บทคัดย่อ

Nitrous oxide (N2O) was tested as a potential fungicidal or fungistatic compound. Twelve postharvest fungi were exposed to 10 to 80 kPa with 20 kPa O2 in a static system at 20 deg C. These fungi were divided into N2O high-, medium- and low-sensitive groups. Based on growth sensitivity, growth of high-sensitive fungi was completely inhibited, and that of medium-sensitive fungi up to 85%. With low-sensitive fungi, significant inhibition was achieved only when the fungi were exposed to N2O continuously for 6 days. Botrytis cinerea, Colletotrichum acutatum, Monilinia fructicola, Penicillium expansum, Penicillium italicum, Phytophthora citrophthora and Rhizopus stolonifer were high-sensitive; Glomerella cingulata was medium-sensitive; and Alternaria alternata, Fusarium oxysporum f.sp. fragariae, F. oxysporum f.sp. lycopersici, and Geotrichum candidum, were low-sensitive fungi. Addition of up to 100 micro l.l-1 C2H4 did not reduce inhibition caused by N2O. The inhibitory effect of N2O was considered to be due to biophysical properties similar to CO2, the competitive inhibition on C2H4 action, or the biosynthesis of methionine. These results indicate the potential of N2O to control some postharvest decay fungi.