芋种质资源染色体倍性鉴定

利用流式细胞术（Flow cytometry，FCM），对芋属（Colocasia）中种质资源类型最为丰富的滇南芋（C.?antiquorum Schott）和芋〔C.?esculenta（L.）Schott〕的染色体倍性进行了鉴定。结果表明：滇南芋的染色体倍性为2n=2x=28。芋中魁芋的染色体倍性表现为2n=2x=28|多头芋、魁子兼用芋为2n=3x=42|多子芋一般为2n=3x=42，但白芽乌绿柄多子芋为2n=2x=28，另外来自印度的绿柄多子芋也为2n=2x=28。

Chromosomal Ploidy Identification of Taro(Colocasia) Germplasm Resources

Chromosome ploidy of taro（Colocasia）germplasm resources，such as C.?antiquorum Schott and C.?esculenta（L.）Schott，whose genotypes were the richest，were studied by flow cytometry analysis．The results showed that chromosome ploidy level of C.?antiquorum Schott was diploid（2n= 2x=28）．In C.?esculenta（L.）Schott，taro with large corm was diploid（2n=2x=28）．The taro with multi-head and taro used for corm and cormels were triploid（2n=3x=42）．Generally，taro with numerous cormels was triploid（2n=3x=42），while taro with numerous cormels，whose potile was purple-green and bud was white，was diploid（2n=2x=28）．Meanwhile，there exists diploid（2n=2x=28）in taro with numerous cormels，whose petiole was green and it was introduced from India.