外源Zn、Fe供给对离体穗培养小麦籽粒Zn、Fe含量的影响

he period of 7 days after flowering was chosen in the way of spike culture to testify the response of sink by the supply of Zn and Fe. The way of spike culture is a very effective way to discuss the relationship between source and sink. The results showed that the supply of Zn and Fe can increase the Zn and Fe content significantly in seeds in the period of 7 days after flowering. The grain weight was increased with the Fe lever raised in certain extent , and then decreased with the Fe level even higher. Zn treatment can also influence grain weight, the grain weight was decreased by the higher and lower Zn level treatment, which showed the importance of proper Zn、Fe level to grain weight. The results also showed that the seeds weight was weakly negative correlated with the Zn、Fe content in seeds by Zn culture, where the same correlation between Zn、Fe content. The correlation between seed weight and seed Zn content was weakly positive in the test, but significantly negative correlation was found between Zn and Fe content by Fe supply . Further researches are needed.