HomeInternational Rice Research Notesvol. 28 no. 1 (2003)

First Semidwarf Boro Rice (Oryza Sativa) Germplasm Collected in Eastern Uttar Pradesh, India, Breeds True

N. Chaudhary | R C. Chaudhary | O. N. Chaturvedi | I. J. Verma | D. N. Dubey

Discipline: Science, Agriculture



Traditional boro rice is a unique type of Oryza sativa grown during the winter season (minimum temperature around 4°C) in the depressions around rivers and lakes. A project funded by the Uttar Pradesh (UP) Council of Agricultural Research was undertaken to collect and conserve this type of rice. Twelve districts were explored and 570 accessions were collected. A semidwarf accession of traditional boro rice was spotted in the field of farmer Ram Briksha of Jhungiya village in the Baghauli block of Sant Kabir Nagar District, eastern UP, India. Collected in May 2000, this was given accession number 52. Plant height appeared to be about half that of a normal traditional boro plant. The average plant height of the semidwarf accession is 54.6 cm, while a tall plant without fertilizer is above 119 cm. The semidwarf plant has the same number of internodes, but the internode length was reduced. The lower internodes were much shorter than normal.