STUDY ON SEED VIGOUR OF RICE

The seed vigour of rice was studied. It has got the results as follows. Useing the seed vigour as a target of seeds quality was better than useing the germination percentage. The seed vigour of rice was decreased in adversity. The decrease of seed vigour was earlier than that of germination percentage. And there was no relation between the level of seed vigour and that of germinating viability. Decreasing percentage of the index of seed vigour can be used as a good target in measuring the level of stress resistance of rice. It was good to use dry weight of both roots and buds to express the growth vigour of rice seedlings.