Method for raising rice yield potentiality

The method for raising rice yield potential is characterized by adopting transgenic method to introduce Psma2-IPT gene into rice, and utilizing reporter gene polymerase chain reaction (PCR) detectionand molecular hybridization to identify transgenic plant, researching photosynthetic property and agronomical character of progeny and selectively breeding transgenic plant line with obvious delayed senility of leaf, improved photosynthesis property and high single-plant yield so as to cultivate high-yield species and creat new resource for breeding seed.