2013考研英语二图表作文预测:出生率和婴儿死亡率

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P5CS activity increased by 33% but the change of δ-OAT activity was not obvious in Zhengyin1 under PEG stress 36h, which indicated that the leaves of drought- sensitive cultivar synthesized proline from ornithine primarily. The activity of P5CS and δ-OAT were less affected in both wheat varieties roots. Under PEG stress 36h PDH activity had a significant decrease (13.7%, P