Botanisches Institut der Universität Düsseldorf, Universitätsstraße 1, D-4000, Düsseldorf 1, FRG.
Theor Appl Genet. 1990 Apr;79(4):440-2. doi: 10.1007/BF00226149.
Two cytoplasms, N and S, are used in the breeding of sugar beet, Beta vulgaris var. altissima. These cytoplasms can be distinguished by their mitochondrial DNA. In an attempt to detect new cytoplasms, we compared the restriction profiles of chloroplast and mitochondrial DNA from five different cultivars of Beta vulgaris. All restriction patterns of chloroplast DNA were identical. With the exception of sugar beet with S-cytoplasm, all cultivars studied showed the same restriction profile of mitochondrial DNA, indicating that these cultivars all contain the N-cytoplasm. These results are discussed with regard to the large morphological differences of the cultivars and the cytoplasmic variability found in natural populations of the wild beet, Beta maritima.
在糖用甜菜（Beta vulgaris var. altissima）的培育中使用了两种细胞质，N 和 S。这些细胞质可以通过它们的线粒体 DNA 来区分。为了检测新的细胞质，我们比较了来自五个不同品种的 Beta vulgaris 的叶绿体和线粒体 DNA 的限制图谱。叶绿体 DNA 的所有限制图谱都是相同的。除了含有 S 细胞质的糖用甜菜外，所有研究的品种都表现出相同的线粒体 DNA 限制图谱，表明这些品种都含有 N 细胞质。这些结果与品种的大形态差异以及在野生甜菜（Beta maritima）的自然种群中发现的细胞质变异性进行了讨论。
