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Table 3 Vegetative morphological characteristics and genetic diversity of the seven traditional varieties of agaves, identified by producers in the localities of Santiago Undameo and Tarímbaro, Michoacán

From: Management, morphological and genetic diversity of domesticated agaves in Michoacán, México

Vegetative characterA. salmiana var. salmianaA. mapisaga var. mapisagaMost probably A. americana var. americanaPC1PC2
VerdeNegroTarímbaroListoncilloBlancoCenizoCarrizaleño
General plant lenght (GPL)209.18 ± 4.12a214.17 ± 5.87a269.00 ± 11.00ab274.68 ± 4.31b238.00 ± 12.00ab167.00 ± 13.00a218.00 ± 10.17ab0.2640.115
Stem lenght (SL)74.06 ± 3.63a80.44 ± 3.67ab67.50 ± 2.50abc66.00 ± 2.36bc55.00 ± 7.00abc50.50 ± 5.50abc46.25 ± 3.12c− 0.0750.419
Mean diameter of the plant (D)296.82 ± 12.31ac294.06 ± 8.28ac411.75 ± 42.25b363.57 ± 13.88b392.00 ± 9.50b266.25 ± 3.75 ac257.63 ± 18.90c0.1810.171
Leaf lenght (LL)153.21 ± 3.66a137.06 ± 5.79a203.00 ± 19.00ab229.32 ± 3.74b168.50 ± 2.50ab125.50 ± 9.50a167.75 ± 6.28ab0.305− 0.005
Leaf width at middle (LW)26.50 ± 0.40a27.17 ± 0.63a24.00 ± 0.00ab22.69 ± 0.46b29.50 ± 0.50ab21.50 ± 0.50ab27.75 ± 2.29ab− 0.2080.038
LL/LW5.79 ± 0.12a5.10 ± 0.24a8.46 ± 0.79ab10.26 ± 0.30b5.71 ± 0.01ab5.85 ± 0.58ab6.18 ± 0.58ab0.306− 0.009
LL/SL2.12 ± 0.07a1.75 ± 0.10abc3.02 ± 0.39abcd3.57 ± 0.10c3.11 ± 0.35abcd2.49 ± 0.08abcd3.68 ± 0.31d0.253− 0.276
Terminal thorn length (TTL)7.30 ± 0.24a6.87 ± 0.18a3.88 ± 0.12abc3.29 ± 0.07b4.13 ± 0.62abc3.34 ± 0.34abc3.26 ± 0.11c− 0.2630.226
Terminal thorn width at the base (TTW)1.09 ± 0.03a1.17 ± 0.04ad0.57 ± 0.01b0.70 ± 0.02cb1.13 ± 0.12abcd0.65 ± 0.02abcd0.68 ± 0.03bcd− 0.2460.179
TTL/TTW6.75 ± 0.28a6.00 ± 0.28a6.81 ± 0.03ab4.78 ± 0.14b3.76 ± 0.96ab5.18 ± 0.65ab4.85 ± 0.25ab− 0.1520.174
TTL/LL0.05 ± 0.00 a0.05 ± 0.00 a0.02 ± 0.00 ab0.01 ± 0.00 b0.03 ± 0.00 ab0.03 ± 0.00 ab0.02 ± 0.00 ab- 0.2770.197
Total number of teeth (TEET)38.94 ± 3.39 a33.50 ± 1.07 a65.50 ± 1.50 ab79.19 ± 2.56 b37.00 ± 1.00 ab36.50 ± 3.50 ab35.75 ± 1.80 a0.2960.065
TEET/LL0.26 ± 0.02 ac0.27 ± 0.01 ac0.33 ± 0.02 ab0.35 ± 0.01 b0.22 ± 0.00 abc0.29 ± 0.01 abc0.21 ± 0.01 c- 0.0250.131
Number of teeth in 10 cm2 (TEE10)3.00 ± 0.17 ac3.11 ± 0.11 ac4.00 ± 1.00 ab4.03 ± 0.26 ab2.00 ± 0.00 c3.00 ± 0.00 abcd2.50 ± 0.29 cd0.1590.188
Teeth length (LTEE)1.45 ± 0.06a1.82 ± 0.07abc1.06 ± 0.28abc1.32 ± 0.07bc2.39 ± 0.06abc1.19 ± 0.05abc1.00 ± 0.25c− 0.1600.164
LTEE/LL0.01 ± 0.0001ab0.014 ± 0.002bd0.005 ± 0.001abcd0.006 ± 0.00c0.014 ± 0.00abcd0.01 ± 0.002abcd0.006 ± 0.002d− 0.2370.150
Teeth width (WTEE)0.58 ± 0.04a0.57 ± 0.02a0.31 ± 0.07ab0.32 ± 0.02 b0.80 ± 0.08a0.60 ± 0.11ab0.70 ± 0.08a− 0.259− 0.211
LTEE/WTEE2.64 ± 0.19abc3.25 ± 0.11 ac3.38 ± 0.16abc4.20 ± 0.18 b3.00 ± 0.23abc2.05 ± 0.30abc1.54 ± 0.51abc0.1750.278
Distance between teeth (DTEE)2.05 ± 0.14a1.78 ± 0.11a1.16 ± 0.29ab1.15 ± 0.09b3.02 ± 0.25ab3.33 ± 0.61ab4.41 ± 0.65a− 0.156− 0.440
DTEE/LL0.01 ± 0.00a0.01 ± 0.00a0.01 ± 0.00ab0.01 ± 0.00b0.02 ± 0.00ab0.03 ± 0.01a0.03 ± 0.00a− 0.225− 0.360
Effective number of alleles (AE)2.230 ± 0.2732.183 ± 0.3132.079 ± 0.1662.739 ± 0.2611.661 ± 0.3211.667 ± 0.3892.316 ± 0.397  
Observed heterozygosity (HO)0.602 ± 0.1200.586 ± 0.1180.682 ± 0.1020.645 ± 0.1080.364 ± 0.1360.364 ± 0.1360.439 ± 0.128  
Expected heterozygosity (HE)0.473 ± 0.0700.445 ± 0.0750.477 ± 0.0550.583 ± 0.0620.295 ± 0.0900.364 ± 0.0900.403 ± 0.102  
  1. Mean value ± standard error. The measures are in cm, except TEET and TEE10, which are counts. The letters are paired comparison. The last columns show eigenvectors of the first (PC1) and second (PC2) principal components according to PCA