Low phosphorus tolerant cultures in upland paddy germplasm and their utilization

Four hundred and fifty germplasms collected from North-eastern Hill region were screened in phosphorus deficient soil for identification of tolerance to low phosphorus condition. Some of the promising lines (65) were evaluated again in hydroponics and a few tolerant lines (26) were further utilised in breeding programme. With these approaches tolerant varieties were identified from germplasm resources. While utilising a few elite lines in a systematic breeding programme undertaken for such stress condition, a few cultures (15) were developed which can be grown in different agro-ecological condition as biological amendment to boost up the productivity in problem soils.