[Effects of simulated acid rain on oilseed rape (Brassica napus) physiological characteristics at flowering stage and yield].
A pot experiment was conducted to study the effects of different acidity simulated acid rain on the physiological characteristics at flowering stage and yield of oilseed rape (B. napus cv. Qinyou 9). Comparing with the control (pH 6.0), weak acidity (pH = 4.0-5.0) simulated acid rain stimulated the rape growth to some extent, but had less effects on the plant biomass, leaf chlorophyll content, photosynthetic characteristics, and yield. With the further increase of acid rain acidity, the plant biomass, leaf chlorophyll content, photosynthetic rate, antioxidative enzyme activities, and non-enzyme antioxidant contents all decreased gradually, while the leaf malonyldialdehyde (MDA) content and relative conductivity increased significantly. As the results, the pod number per plant, seed number per pod, seed weight, and actual yield decreased. However, different yield components showed different sensitivity to simulated acid rain. With the increasing acidity of simulated acid rain, the pod number per plant and the seed number per pod decreased significantly, while the seed weight was less affected.
Ministry of Agriculture Key Laboratory of Crop Physiology and Ecology/Jiangsu Province Hi-Tech Key Laboratory of Information Agriculture, Nanjing Agricultural University, Nanjing 210095, China. 2007101073@njau.edu.cn
Chun-Xin
CX
Cao
Qin
Q
Zhou
Liang-Liang
LL
Han
Pei
P
Zhang
Hai-Dong
HD
Jiang
D015258:Acid Rain / Q000009:adverse effects*; D018533:Biomass; D001937:Brassica / Q000254:growth & development / Q000502:physiology*; D003198:Computer Simulation; D035264:Flowers / Q000254:growth & development*; D010788:Photosynthesis / Q000502:physiology
D015258:Acid Rain