The possibility of inverting from some characteristics to excellent ones is studied after applying cluster analysis, which is the basis of elite seed selection and plant division.
利用聚类分析方法中的最短距离法，探讨某种源经济性状向最理想性状选育的可能性，并为今后的良种选育和栽培区划提供重要依据。
The haploid plant is the best material for genetic research of carrot, and homozygous diploid formed by doubling chromosome of the haploid plant is also the best resource of breed seed selection.
而单倍体植株是胡萝卜遗传研究的最好材料，由单倍体植株染色体加倍而成的纯合二倍体，又是品种选育的最好资 源。
The haploid plant is the best material for genetic research of carrot, and homozygous diploid formed by doubling chromosome of the haploid plant is also the best resource of breed seed selection.
而单倍体植株是胡萝卜遗传研究的最好材料，由单倍体植株染色体加倍而成的纯合二倍体，又是品种选育的最好资 源。
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