Response of African Leafy Vegetables to Mel oi dogyne Spp. in Kenya
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Date
2013-06-30
Authors
Nchore, S. B.
Kariuki, G.M.
Kariuki, G. M.
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Abstract
Rf it was concluded that Sng, Snp and Svo were susceptible and good hosts, Meloidogyne species severely damages vegetables in nursery and field establishments. Seven African leafy vegetables (ALVs) [Solanum villosum orange (Svo), S. nigrum green (Sng), S. nigrum purple (Sp), A. cruentus (Ac), A. dubius (Ad), A. hypochondriacus (Ah), and Cleome gynandra purple stemmed (Cgp) relative to susceptible Solanum lycopersicum L. cv. Moneymaker (To)] identified in various AEZ in western Kenya in November 2011 from potential farmers, were screened in the green-house from February-May 2012, for their response to Meloidogyne spp. The experiment was laid-out in CRBD with four replications. Each ALV was planted in a 12-cm diameter micro-pot filled with 1 kg autoclaved soil-sand (1:2) medium. Ten egg-masses of Meloidogyne species raised on Moneymaker tomato were hand-picked and placed at the rhizosphere of each ALV per pot for comparison with un-inoculated control and susceptible check. 75 days after inoculation data on shoot height (SH), fresh shoot and root weight, galling index (GI) and reproduction factor (Rf) were collected. The response varied (P<0.05) among the ALVs from very susceptible to resistant with the highest GI in Sng and lowest in Ah relative to the check. Nematode Rf was lowest in Ah and Cgp and highest in Sng compared to the check. Meloidogyne spp. significantly reduced SH in Sng, Ac, Ad, Svo, Ah, Snp and Cgp relative to the check with heavy galling recorded in Sng and check. Based on GI and Ad was tolerant, Ah was poor host while Ac and Cgp were fair hosts.
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Keywords
Meloidogyne spp. response, Reproduction, Resistance, Tolerance
Citation
Vol. 2 , Issue 1 , page 1 - 12, June 30 , 2013