TITLE:
Induced systemic resistance to Meloidogyne spp by β,amino butyric acid in tomato
AUTHORS:
Shamaael S. Mutar, Farkad A. Fattah
KEYWORDS:
Induced Resistance; β, Amino Butyric Acid; Meloigogyne spp; Tomato
JOURNAL NAME:
Agricultural Sciences,
Vol.4 No.11,
November
19,
2013
ABSTRACT: β,amino butyric acid (BABA) induced resistance againstMeloigogynespp in tomato. Significantly (p= 0.05) less, 41.11 second stage
juveniles (J2) enter the roots of treated than, 116.66 J2 in untreated control
plants. Root fresh and dry weight (Rfw, Rdw) were 2.87 and 0.12 g in treated
compared with 4.78 and 0.30 g in nematode infected control plants respectively,
30 d after nematode inoculation. Sfw and Sdw were 8.62 and 0.60 g compared with
3.94 and 0.22 g in control plants. Foliage spray at 40 and 20 mM of BABA was
more effective than 10 and 5 mM treatments. The former two concentrations
recorded the lowest, average gall index, 2.11 compared with 3.33, 4.11, and 5
for the latter two concentrations and nematode infected control respectively.
Results also indicated that treatments with BABA prior to nematode inoculation
were superior in inducing resistance toMeloidogynespp over treatment at the time or
after nematode inoculation.