由于大多数牧草的多倍性和高度异质特点，牧草遗传连锁图谱的构建相对复杂。

By polyploid nature and high levels of heterozygosity of vast majority pasture plants, it was rather complicated to construct linkage maps of them.

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利用随机引物对基因组DNA扩增结果表明，NIL -PL0 1和NIL -APL0 1之间多态性差异较小，遗传同质性达98.6 % ，该材料正用于筛选与无花瓣性状紧密连锁的分子标记。

The genomic DNA PCR indicated that the genetic homogeneity between NIL-PL01 and NIL-APL01 reached 98.6%, which were being used in screening the molecular marker linked to apetalous trait.

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