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Examine medicinal plants from South Africa for suppression of Meloidogyne incognita under glasshouse conditions


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Reproductive potential (RP) of Meloidogyne incognita race 2 on tomato cv. “Floradade” plants treated with soil amendments at 65 days after inoculation.

Plant species 2006 2007 2008 2009 2011
Cassia abbreviata 1.3 b 0.7 bc
Cissus cactiformis 0.8 b 0.6 c 0.2 b 0.2 b 0.6 bc
Euphorbia ingens 0.8 b 1.2 b 0.3 b 0.2 b 0.6 bc
Ipomoea kituiensis 0.9 b 1.0 bc
Synadenium cupulare 0.7 b 0.8 bc 0.3 b 0.1 b 0.9 bc
Senna petersiana 1.0 b 0.7 bc
Urginea sanguinea 0.9 b 1.2 b
Maerua angolensis 0.2 b 0.2 b 2.2 b
Tabernaemontana elegans 0.2 b 0.1 b 1.2 bc
Cucumis myriocarpus 0.9 bc
Fenamiphos 0.4 b 0.2 b 0.0 bc
Untreated control 4.1 a 4.4 a 1.8 a 1.4 a 10.0 a
LSD 0.7165 0.6114 0.1415 0.1273 2.0788
P-value  ≤ 0.001  ≤ 0.001  ≤ 0.001  ≤ 0.001  ≤ 0.001
F-value 19.97 34.84 137.72 108.15 15.20

Reproduction of Meloidogyne incognita race 2 on tomato cv. Floradade plants treated with soil amendments of nine plant species at 65 days after inoculation with 3,000 eggs and second-stage juveniles (J2).

Eggs  +  J2/root system
Plant species 2006 2007 2008 2009 2011
Cassia abbreviata 3 925 b 2 050 d
Cissus cactiformis 2 500 cd 1 700 d 662 c 1 000 b 1 688 bc
Euphorbia ingens 2 500 cd 3 562 b 862 bc 788 cd 1 838 bc
Ipomoea kituiensis 2 575 cd 3 000 bc
Synadenium cupulare 2 125 d 2 538 cd 762 bc 562 d 2 588 bc
Senna petersiana 3 125 bc 2 088 d
Urginea sanguinea 2 775 cd 3 600 b
Maerua angolensis 650 c 688 cd 6 687 b
Tabernaemontana elegans 712 c 650 bcd 3 588 bc
Cucumis myriocarpus 2 550 c
Fenamiphos 1 050 b 875 bc 138 d
Untreated control 12 225 a 13 238 a 5 388 a 5 188 a 30 063 a

Fresh root and shoot weight of tomato cv. Floradade plants treated with soil amendments of nine plant species at 65 days after inoculation with 3,000 eggs and second-stage juveniles (J2) of Meloidogyne incognita race 2.

Fresh root weight (g) Fresh shoot weight (g)
Plant species 2006 2007 2008 2009 2011 2006 2007 2008 2009 2011
Cassia abbreviata 2.8 a 3.0 b 3.7 d 3.7 c
Cissus cactiformis 2.9 a 2.8 bc 30.2 a 20.6 a 14.1 d 9.2 a 8.6 a 9.9 ab 10.0 a 83.7 a
Euphorbia ingens 2.0 a 1.8 d 23.3 a 19.0 a 7.2 b 7.7 a 8.6 bc 8.1 abc 80.5 a
Ipomoea kituiensis 3.2 a 4.6 a 15.2 d 3.3 d 3.7 c
Synadenium cupulare 2.4 a 2.1 cd 22.1 bc 20.2 a 19.2 ab 5.3 c 6.4 b 7.6 c 9.2 ab 70.2 c
Senna petersiana 2.6 a 1.8 d 4.0 d 3.8 c
Urginea sanguinea 2.5 a 2.5 bcd 4.0 d 3.9 c
Maerua angolensis 25.3 b 14.9 b 17.6 bc 8.7 bc 7.1 bc 81.5 a
Tabernaemontana elegans 30.8 a 19.5 a 15.1 d 10.0 a 9.8 a 79.2 ab
Cucumis myriocarpus 20.0 a 68.1 cd
Fenamiphos 30.7 a 22.3 a 15.9 cd 10.0 a 10.4 a 73.3 bc
Untreated control 2.2 a 1.8 d 21.6 c 14.6 b 11.2 e 3.4 d 4.1 c 7.9 c 6.0 c 61.5 d
eISSN:
2640-396X
Język:
Angielski
Częstotliwość wydawania:
Volume Open
Dziedziny czasopisma:
Life Sciences, other