Table 3.
Comparison of genetic diversity between the three switchgrass subpopulations
| Diversity indexes** | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| N | Np | P | Representative accessions* | Ne (SE) | I (SE) | Ho (SE) | He (SE) | F (SE) | |
| C1 | 158 | 186(11) | 72.9 | PI 315724, PI 337553, PI 414066, PI 414067, PI 414068, PI 421520, PI 431575, PI 476292, PI 476294, PI 476295, PI 476296, PI 642190 and PI 642191 | 1.221a (0.017) | 0.236a (0.014) | 0.077a (0.005) | 0.145a (0.009) | 0.402a (0.019) |
| C2 | 81 | 142(3) | 55.6 | PI 414065, PI 414070, PI 421521, PI 421999 and SNF | 1.210 a (0.019) | 0.203 a (0.015) | 0.071a (0.007) | 0.129 a (0.010) | 0.361 a (0.023) |
| C3 | 71 | 200(5) | 78.4 | PI 315727, PI 422001, Citrus Co-FL, OSSP-FL and SWFWMD-FL | 1.211 a (0.020) | 0.217 a (0.014) | 0.050b (0.004) | 0.131 a (0.010) | 0.450 a (0.024) |
| Admix | 62 | 233(0) | 91.4 | PI 315725#, PI 422003, PI 476290 | 1.304 (0.018) | 0.323 (0.013) | 0.078 (0.004) | 0.198 (0.009) | 0.520 (0.020) |
| Total | 372 | 251 | 74.6 | 26 | 1.236 (0.009) | 0.245 (0.007) | 0.069 (0.002) | 0.152 (0.005) | 0.443 (0.011) |
N number of genotypes, Np No. of polymorphic loci (number of Private Alleles), P percentage of polymorphic loci, Ne No. of Effective Alleles, I Shannon’s Information Index, Ho Observed Heterozygosity; He Expected Heterozygosity, F Fixation Index, SE Standard Error
* Accession for which more than 70% of the genotypes belong to a specific subpopulation
**Mean and SE over loci for each subpopulation; Means with the same letter are not significantly different based on a Tukey HSD test
#Accession 3 is represented by only two genotypes