TY - JOUR
T1 - Photosynthesis, chlorophyll fluorescence, and yield of peanut in response to biochar application
AU - Wang, Shujun
AU - Zheng, Junlin
AU - Wang, Yujia
AU - Yang, Qingfeng
AU - Chen, Taotao
AU - Chen, Yinglong
AU - Chi, Daocai
AU - Xia, Guimin
AU - Siddique, Kadambot
AU - Wang, Tieliang
PY - 2021/5/31
Y1 - 2021/5/31
N2 - The effect of biochar application on photosynthetic traits and yield in peanut (Arachis hypogaea L.) is not well understood. A 2-year field experiment was conducted in Northwest Liaoning, China to evaluate the effect of biochar application [0, 10, 20, and 40 t ha(-1) (B0, B10, B20, and B40)] on leaf gas exchange parameters, chlorophyll fluorescence parameters, and yield of peanut. B10 improved photochemical quenching at flowering and pod set and reduced non-photochemical quenching at pod set, relative to B0. B10 and B20 increased actual photochemical efficiency and decreased regulated energy dissipated at pod set, relative to B0. B10 significantly increased net photosynthetic rate, transpiration rate, stomatal conductance, and water use efficiency at flowering and pod set, relative to B0. Compared with B0, B10 significantly improved peanut yield (14.6 and 13.7%) and kernel yield (20.2 and 14.4%). Biochar application increased leaf nitrogen content. B10 and B20 significantly increased plant nitrogen accumulation, as compared to B0. The net photosynthetic rate of peanut leaves had a linear correlation with plant nitrogen accumulation and peanut yield. The application of 10 t ha(-1) biochar produced the highest peanut yield by enhancing leaf photosynthetic capacity, and is thus a promising strategy for peanut production in Northwest Liaoning, China.
AB - The effect of biochar application on photosynthetic traits and yield in peanut (Arachis hypogaea L.) is not well understood. A 2-year field experiment was conducted in Northwest Liaoning, China to evaluate the effect of biochar application [0, 10, 20, and 40 t ha(-1) (B0, B10, B20, and B40)] on leaf gas exchange parameters, chlorophyll fluorescence parameters, and yield of peanut. B10 improved photochemical quenching at flowering and pod set and reduced non-photochemical quenching at pod set, relative to B0. B10 and B20 increased actual photochemical efficiency and decreased regulated energy dissipated at pod set, relative to B0. B10 significantly increased net photosynthetic rate, transpiration rate, stomatal conductance, and water use efficiency at flowering and pod set, relative to B0. Compared with B0, B10 significantly improved peanut yield (14.6 and 13.7%) and kernel yield (20.2 and 14.4%). Biochar application increased leaf nitrogen content. B10 and B20 significantly increased plant nitrogen accumulation, as compared to B0. The net photosynthetic rate of peanut leaves had a linear correlation with plant nitrogen accumulation and peanut yield. The application of 10 t ha(-1) biochar produced the highest peanut yield by enhancing leaf photosynthetic capacity, and is thus a promising strategy for peanut production in Northwest Liaoning, China.
KW - biochar
KW - chlorophyll fluorescence
KW - plant nitrogen accumulation
KW - photosynthetic traits
KW - peanut yield
KW - SOIL PROPERTIES
KW - NITROGEN-FERTILIZER
KW - USE EFFICIENCY
KW - GROWTH
KW - PARAMETERS
KW - EMISSIONS
KW - AMENDMENT
KW - LEAF
KW - MOISTURE
KW - COMPOST
U2 - 10.3389/fpls.2021.650432
DO - 10.3389/fpls.2021.650432
M3 - Article
C2 - 34135920
SN - 1664-462X
VL - 12
JO - Frontiers in Plant Science
JF - Frontiers in Plant Science
M1 - 650432
ER -