J Integr Plant Biol. ›› 1984, Vol. 26 ›› Issue (2): -.

• Research Articles •    

A Preliminary Observation on B-Chromosomes of Regal lily

Li Mao-xue, Long Ya-yi and Gong Wei-zhong   

Abstract: The authors have observed t he karyotypes of the Regal Lily with B-chromosome and without B-chromosomes as well as their Giemsa C-bands. The results show that the karyotypes with B-chromosomes are not obviously different from those without B- chromosomes. B-chromosome is additional and all of them are heterochromatization. But segregation of B-chromosome at anaphase Ⅰ and Ⅱ in meiosis is irregular, and about half of the pollen grains contain B-chromosomes. In the progenies by open pollination the segre, gation of 0B and lB appear in the ratio near 1:1 and the offsprings with 2B-chromosomes only average 2.6 percent.

Key words: B-chromosome, Lilium, Karyotype, Giemsa C-bands, Meiosis

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