论文部分内容阅读
在玉米制种及玉米生产中,苗期去杂去劣,是保证制种纯度,提高制种质量,增加玉米产量的一个重要环节。但在玉米制种及玉米生产中苗期去杂去劣,纯度鉴定依据的标准很难确定。根据山东大学张春庆等研究,玉米苗期田间去杂去劣和纯度鉴定的最佳时期为5叶1心期,指出叶色、叶形、叶缘形、叶间夹角、叶鞘色、光泽、叶缘色,这7类性状为苗期去杂去劣及纯度鉴依据的典型性状,根据这一结论,我们用100个常用玉米材料作了试
In the corn seed production and corn production, seedling to go bad, is to ensure seed purity, improve seed quality, increase corn yield is an important part. However, seed production in maize and corn seedling to go bad, purity standards based on the identification is difficult to determine. According to the study by Zhang Chunqing and others from Shandong University, the optimum period of impurity removal and purity identification in the seedling stage was 5 leaves and 1 heart period. It was pointed out that leaf color, leaf shape, leaf margin shape, leaf angle, leaf sheath color, Leaf margin color, these seven traits are the typical traits associated with impurity and purity in seedling stage. Based on this conclusion, we used 100 common maize materials