과산화수소 처리가 수수의 발아 및 초기 생장에 미치는 효과

• Published in: Korean journal of crop science Vol. 63; no. 2; pp. 140 - 148
• Main Authors: 심두보, Doobo Shim, 송기은, Ki Eun Song, 박찬영, Chan Young Park, 전승호, Seung Ho Jeon, 황정규, Jung Gyu Hwang, 강은주, Eun-ju Kang, 김종철, Jong Cheol Kim, 심상인, Sangin Shim
• Format: Journal Article
• Language: Korean
• Published: 한국작물학회 30.06.2018
• Subjects: drought stress; germination; hydrogen peroxide; oxidative stress; sorghum; 농학; germination; sorghum; drought stress; oxidative stress; hydrogen peroxide
• ISSN: 0252-9777; 2287-8432
• DOI: 10.7740/kjcs.2018.63.2.140

As the global warming causing desertification increase, there is growing concern about damage of crops. It was to investigate how the treatment with hydrogen peroxide before leaf development affects the growth and yield of sorghum for minimizing a damage of crops to drought. The germination experiment was conducted at alternating temperature of 25℃/20℃(12 hr/12 hr) under water stress condition of 0 ~ -0.20 MPa adjusted with PEG solution containing 0 and 10 mM H 2 O 2 . In order to know the effect of foliar application of hydrogen peroxide on the growth of sorghum, 10 mM hydrogen peroxide was treated to leaves at 3-leaf stage of sorghum growing in greenhouse conditions. Seed germination rate was increased by 20% in hydrogen peroxide treatment as compared to the Control. under water stress conditions (-0.15 ~ -0.20 MPa). The length of seedlings was also on the rise by the hydrogen peroxide treatment. In the greenhouse pot experiment, the morphological characteristics (plant height, stem diameter, leaf length, and leaf number) and physiological characteristics (chlorophyll content, chlorophyll fluorescence (Fv/Fm), stomatal conductance) were higher in the plants treated with hydrogen peroxide under the drought stress condition than those of plants of H 2 O treatment. Experiment conducted with the soil moisture gradient system showed that the foliar application of hydrogen peroxide increased photosynthetic ability of sorghum plant with respect to SPAD value and stomatal conductance and rooting capacity (root weight and root length) under drought condition. Generally, hydrogen peroxide treatment in sorghum increased the tolerance to drought stress and maintained better growth due to ameliorating oxidative stress.