论文部分内容阅读
本文利用RAPD分子标记从DNA水平上研究了湿地松 (PinuselliottiiEngelm)种子园的遗传多样性和连锁不平衡状况。结果表明 ,有效等位基因数目在各位点间变动范围为 1 0 47～ 1 996 ,平均为 1 4 499;基因多样度范围为 0 0 44 9～ 0 4 99,平均为 0 2 781 ;Shannon信息指数的范围为 0 1 0 95～ 0 6 92 2 ,平均为 0 4 32 7;这3个遗传多样性度量的大小顺序基本相同。 1 0 4个分离位点共有 5 35 6个位点对 ,其中 35 5对在显著性水平为0 0 5下达到显著的连锁不平衡状态。该抗病种子园具有较高的遗传多样性和一定程度的连锁不平衡
In this paper, we studied the genetic diversity and linkage disequilibrium of Pinus tabulaeformis Engelm seed orchards from the DNA level using RAPD markers. The results showed that the number of effective alleles ranged from 1 0 47 to 1 996, with an average of 1 4 499; the genetic diversity ranged from 0 449 to 0 4 99 with an average of 0 2 781; Shannon information The index ranged from 0 1 0 95 to 0 6 92 2 with an average of 0 4 32 7. The order of magnitude of these three genetic diversity measures was basically the same. A total of 1056 pairs of loci were found in 104 isolates, of which 35 5 pairs reached a significant linkage disequilibrium at a significant level of 0 0 5. The resistant seed garden has high genetic diversity and a certain degree of linkage disequilibrium