Table 3.
Root weight, gall index (GI) and eggs per gram root of Meloidogyne incognita on genotypes of Cucurbita maxima and C. moschata in pot experiments.
| Genotype | Root weight (g) | GIa | Eggs/g root | Resistance designationb |
|---|---|---|---|---|
| C. maxima | ||||
| 57SI21-IP1 | 5.68 ± 0.17 a | 7.50 ± 0.27 bcde | 12227 ± 746 fg | MR |
| 57SI21-IP2 | 3.27 ± 0.26 cdef | 7.50 ± 0.33 bcde | 20687 ± 1219 cd | S |
| 57SI21-A3 | 2.66 ± 0.15 ef | 8.00 ± 0.27 abcd | 23554 ± 1700 cd | S |
| 57SI21-A6 | 2.91 ± 0.09 def | 8.25 ± 0.25 abc | 17028 ± 1154 de | S |
| 57SI21-O7 | 5.71 ± 0.34 a | 7.25 ± 0.25 cde | 12047 ± 1478 fg | MR |
| 57SI21-O11 | 4.25 ± 0.29 bc | 7.13 ± 0.23 cde | 9308 ± 514 g | MR |
| 57SI06-IP1 | 3.40 ± 0.10 cdef | 8.50 ± 0.19 ab | 22673 ± 1636 cd | S |
| 57SI06-IP3 | 3.61 ± 0.21 bcde | 7.88 ± 0.13 abcd | 39499 ± 1917 a | S |
| 55CA06-A1 | 2.78 ± 0.17 ef | 6.63 ± 0.18 e | 16987 ± 1678 de | S |
| 55CA06-A4 | 4.50 ± 0.29 ab | 7.38 ± 0.26 bcde | 25059 ± 446 bc | S |
| 55BA03-A1 | 3.96 ± 0.28 bcd | 7.88 ± 0.23 abcd | 33905 ± 1255 ab | S |
| 55CA15-A2 | 3.51 ± 0.22 bcde | 8.00 ± 0.19 abcd | 39663 ± 3164 a | S |
| 55CA15-A3 | 3.30 ± 0.25 cdef | 8.63 ± 0.18 a | 14508 ± 928 fg | MR |
| 55CA15-O9 | 2.68 ± 0.18 ef | 7.00 ± 0.27 de | 10282 ± 791 g | MR |
| G14-IP1 | 2.62 ± 0.17 f | 8.50 ± 0.19 ab | 18994 ± 1133 cd | S |
| C. moschata | ||||
| 14BO01-O1 | 3.74 ± 0.54 b | 8.25 ± 0.16 a | 56002 ± 8086 ab | S |
| 14BO01-O2 | 6.21 ± 0.20 a | 8.00 ± 0.00 a | 50951 ± 2998 ab | S |
| G9-A4 | 6.12 ± 0.38 a | 8.13 ± 0.13 a | 47032 ± 3124 b | S |
| G9-A5 | 5.82 ± 0.48 a | 8.13 ± 0.13 a | 45326 ± 3968 b | S |
| G9-O12 | 3.08 ± 0.20 b | 8.13 ± 0.13 a | 70915 ± 3829 a | S |
Notes: Data are the mean ± standard error of two experiments (four replicates for each experiment). Statistical analyses of data were based on log10 (x + 1) transformed data. Means within a column followed by the same letters for each plant species are not significantly different according to Tukey's HSD test at P<0.05. aGI was based on a scale from 0 (no galls) to 10 (100% of roots galled) (Bridge and Page, 1980). bResistance is based on reproduction relative to the most susceptible genotype (55BA03-A1 and 55CA15-A2 for C. maxima and G9-A5 for C. moschata). Reproduction <10% that of the susceptible genotype is considered highly resistant (HR), £50% is considered moderately resistant (MR), and >50% is considered susceptible (S).