J Integr Plant Biol. ›› 1993, Vol. 35 ›› Issue (11): -.

• Research Articles •    

Studies on Polymorphisms of G-banded Karyotypes in Oryza rufipogon

Chen Jin-hua,Song Yun-chun,Wang Ming-quan and Song Wen-zhen   

Abstract: The karyotypes and G-banding patterns of four kinds of experimental materials collected from different geographic regions were compared in Oryza rufilpogon Griff. There were obvious polymorphisms in chromosome arm length,arm ratio, G-band number of each arm as well as the size and degree of G-bands staining among the experimental materials. The single band of some chromosomes is heteromorphic in the size and staining intensity. The mechanisms of karyotype polymorphism formation is also discussed.

Key words: Oryza rufipogon, Chromosome, Karyotype , G-banding patterns , Polymorphism

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