Abstract:

To study on stem traits and correlation among them, 3 super rice varieties of Heilongjiang province were studied in this experiment, and 3 common varieties were used as contrast respectively. The main results were as follows: Compared with contrasts, length and diameter of the 1st internode of super rice varieties were higher, and 2nd and the 3rd internode of super rice varieties were lower. It were more than contrasts that the number of large vascular bundle of neck-panicle, the 1st internode, the 2nd internode of super rice varieties. Correlation analysis indicated that the number of large and small vascular bundle of neck-panicle and other internodes had positive correlation with length and diameter of the 1st internode, diameter of the 2nd internode and the 3rd internode.