Effects of Continuous Application of Biochar on Chlorophyll Fluorescence Characteristics of Peanut at Different Growth Stages
GU BoWen,1, YANG JinFeng,1,*, LU XiaoLing2, WU YiHui1, LI Na1, LIU Ning1, AN Ning1, HAN XiaoRi,1,*1College of Land and Environment, Shenyang Agricultural University/National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources/Monitoring & Experimental Station of Corn Nutrition and Fertilization in Northeast Region, Ministry of Agriculture and Rural Affairs, Shenyang 110866; 2Marine College, Shandong University, Weihai 264209, Shandong
Abstract 【Objective】By measuring the photosynthetic performance indexes of functional leaves of peanut at different growth stages, the effects of different amounts of biochar on electron transport, light energy absorption and redox properties of peanut leaves photosome II were studied for 9 years in a row. Meanwhile, the change trend of leaf oxygen evolution complex (OEC) damage degree was observed to provide the theoretical support for guiding peanut fertilization. 【Method】 A field experiment was conducted in 2011 with three treatments: CK (no fertilization), C15 (biochar 225 kg·hm-2), and C50 ( biochar 750 kg·hm-2). In 2019, the peanut functional leaves at different growth stages were collected, and the photosynthetic indexes of leaves after dark treatment were measured by M-PEA-2 instrument.【Result】By analyzing the chlorophyll fluorescence parameters of peanut functional leaves at different growth stages, it was found that continuous application of biochar had a significant effect on the rapid chlorophyll fluorescence kinetic curve (OJIP curve). The relative variable fluorescence intensity difference (ΔVt) of K point treated with C15 was -0.002 and -0.020 at seedling stage and flowering and needle setting stage, and -0.024 and -0.053 at pod setting stage and maturity stage. Compared with CK treatment, the relative variable fluorescence intensity of K point in functional leaves of peanut at different growth stages was significantly decreased; with the increase of biochar dosage, the decrease range of K point at flowering, needling and mature stages increased in varying degrees. The chlorophyll fluorescence parameters of peanut functional leaves had a positive response to the continuous application of biochar at the flowering, needling and maturity stages. Compared with CK treatment, the relative variable fluorescence intensity at the J-step (VJ) under C15 treatment decreased by 23.9%, the approximated initial slope of the fluorescence transient (MO) decreased by 32.1%, and the rate at which trapped excitons transfer electrons to other electron receptors downstream of QA in the electron transport chain (ΨO) increased by 25.0%.The performance index on absorption basis (PIABS ) increased by 154.6%, which alleviated the damage of oxygen releasing complex (OEC) in peanut functional leaves and improved the ability of electron transfer from primary quinone receptor (QA) to other electron receptors downstream of electron transport chain, and its effect on chlorophyll fluorescence performance increased. With the increase of biochar dosage, the effect was more obvious. At the mature stage, the effects of biochar application on chlorophyll fluorescence characteristics of peanut leaves were basically consistent with those at flowering and needling stage. The specific performance was as follows: the relative variable fluorescence intensity at the J-step (VJ) and the approximated initial slope of the fluorescence transient (MO) under C15 treatment were significantly lower than those under CK treatment 12.5% and 16.0%, respectively, and the trapped excitons transferred electrons into the electron transfer chain (QA).Compared with CK treatment, the relative variable fluorescence intensity at the J-step (VJ) decreased by 13.2%, and the approximated initial slope of the fluorescence transient (MO) decreased by 19.4%. The probability that a trapped exciton moved an electron into the electron transport chain beyond QA (ΨO) was 8.2%, and the performance index on absorption basis (PIABS) increased by 79.7%.【Conclusion】Continuous application of biochar could increase the electron transfer efficiency of photosystem II in functional leaves of peanut at the time of flowering and maturity, and improve the photosynthetic performance of functional leaves of peanut during this period. Keywords:biochar;peanut;chlorophyll fluorescence;chlorophyll a fluorescence (OJIP) transient
PDF (477KB)元数据多维度评价相关文章导出EndNote|Ris|Bibtex收藏本文 本文引用格式 顾博文, 杨劲峰, 鲁晓玲, 吴怡慧, 李娜, 刘宁, 安宁, 韩晓日. 连续施用生物炭对花生不同生育时期叶绿素荧光特性的影响. 中国农业科学, 2021, 54(21): 4552-4561 doi:10.3864/j.issn.0578-1752.2021.21.006 GU BoWen, YANG JinFeng, LU XiaoLing, WU YiHui, LI Na, LIU Ning, AN Ning, HAN XiaoRi. Effects of Continuous Application of Biochar on Chlorophyll Fluorescence Characteristics of Peanut at Different Growth Stages. Scientia Agricultura Sinica, 2021, 54(21): 4552-4561 doi:10.3864/j.issn.0578-1752.2021.21.006
Fig. 1The curve of relative variable fluorescence intensity difference (ΔVt) of peanut functional leaves applied with different amounts of biochar at different growth stages (a. Seedling stage; b. Flowering and needling stage; c. Podding stage; d. Maturation stage)
不同字母表示差异显著(P<0.05) Fig. 2Relative variable fluorescence intensity at the J-step (VJ) of peanut functional leaves in different growth stages and treatments
Different small letters within a column indicate significantly different at the 0.05 level
不同字母表示差异显著(P<0.05) Fig. 3Approximated initial slope of the fluorescence transient (MO) of peanut functional leaves in different growth stages and treatments
Different small letters within a column indicate significantly different at the 0.05 level
不同字母表示差异显著(P<0.05) Fig. 5Probability that a trapped exciton moves an electron into the electron transport chain beyond QA (ψo) of peanut functional leaves in different growth stages and treatments
Different small letters within a column indicate significantly different at the 0.05 level
QIN LQ, ZHANG YL, GUOF, WAN SB, MENG QW, LI XG. Damaging mechanisms of peanut(Arachis hypogaea L.)photosystems caused by high-temperature and drought under high irradiance Acta Ecologica Sinica, 2011, 31(7):1835-1843. (in Chinese) [本文引用: 3]
ZHAN XM, PENGJ, WANGY, LIU YF, CHENK, HAN XR, WANG HF, LIN WC, LI XY. Influences of application of biochar and biochar-based fertilizer on brown soil physiochemical properties and peanut yields Plant Nutrition and Fertilizer Science, 2015, 21(6):1633-1641. doi: https://www.chinaagrisci.com/article/2021/0578-1752/10.11674/zwyf.2015.0631. (in Chinese) [本文引用: 1]
CHEN WF, ZHANG WM, MENGJ. Advances and prospects in research of biochar utilization in agriculture Scientia Agricultura Sinica, 2013, 46(16):3324-3333. (in Chinese) [本文引用: 1]
ZENGA. Effects of biochar on soil physical and chemical properties and the growth of wheat in manural loessial soil [D]. , 2013. (in Chinese) [本文引用: 1]
LI PM, GAO HY, STRASSERR. Application of the fast chlorophyll fluorescence induction dynamics analysis in photosynthesis study Acta Photophysiologica Sinica, 2005, 31(6):559-566. (in Chinese) [本文引用: 2]
YUAN JL, MAC, FENG YL, ZHANGJ, YANG FQ, LI YJ. Response of chlorophyll fluorescence transient in leaves of wheats with different drought resistances to drought stresses and rehydration Plant Physiology Journal, 2018(6):1119-1129. (in Chinese) [本文引用: 1]