Plant Tissue Cult. 2(1): 1-6,1992

EVALUTION OF DIHAPLOID RICE DERIVED THROUGH ANTHER CULTURE

A.K.M. Shahjahan, M.A.Nahar, Nilufer H. Karim, N.M.Miah and S.A. Miah

Bangladesh Rice Research Institute Gazipur- 1701, Bangladesh

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Abastract

Forty-seven anther calli-derived dihaploid rice plants obtained from indica and japonica cultivars and F₁and F₂ plans of crosses between indica/indica and Indica/japonica genotypes at H₁,H₂ generations and eight selected dihaploids at H₃ generation were evaluated in the filed during T. Aman and Boro seasons. There was a wide variation among dihaploids for plant height , tiller number/hill, panicle length, spikelet number/panicle,sterility, maturity and yield. Compared To the mother plant/sister line or the check cultivars most were poor in yield. However, three anther culture (AC) lines, BR 1083-226-4-AC-1b and BR2799-10-4-6-3-AC-2 for T. Aman and IR9729-AC-1a for Boro appeared better than the rest. It is suggested that further improvement of these lines through crossing with desirable genotypes and anther culture of the F₁ hybrids is possible.

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