| 1 | The leaf number in fruit branch was closely related to fruit size and quality. | |
| 2 | Fruit characters: average small, average spike weighs 175 grams, cone or cylindrical, with vice spike. | |
| 3 | N was mainly distributed in leaf before silking stage and was translocated to ear in grain filling stage. | |
| 4 | The phenomenon of ear barren tip composed from aborted kernels and florets without fecundation at the tip of ear is an important factor causing yield losses. | |
| 5 | Morphological characters of inbred line to be developed can be forecasted by characters of ear length, number of kernal rows, ear height and rate of green leaves in the basic population. |