The Impacts of Low Temperature on Corn Seeds Germination

Through germination test,the germination percentage,germination potentiality,and germination index of 3 corn varieties of early,middle and late maturity in Northeastern China under dark conditions with 4℃,8℃,13℃,17℃,21℃ and 25℃ were studied,and the germination critical temperature for 3 varieties were given. The results show that low temperature inhibited seed germination and reduced germination ability. The germination critical temperature of 3 varieties are 3.2~5.2℃. The lower of germination critical temperature,the more powerful of seed germination resistant to low temperature. The rare earth treatment has the role of raising corn seeds germination percentage and promote germination.

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