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Basis of Resistance
Kunzru and Sinha (1966) reported that an antibiotic principle which diffuses in
the inoculation droplets during the course of interaction between A. rabiei and
pod tissues plays some role in resistance. The antibiotic principle was given a
status of phytoalexin and narned 'Cicerin' and is composed of two phenolic
compounds. Keen (1975) found that germinating seed of chickpea challenged
with native microflora produced some phytoalexins, like other plant tissues.
Vir and Grewal (1974b,c; 1975a,b) studied in detail the biochemical basis of
resistance by using resistant line 1-13 and a susceptible type Pb7. Their work
showed that the total phenolic contents were higher in leaves than stem. There
was no significant difference in phenolic contents of resistant and susceptible
cultivars before inoculation; however, after inoculation, the increase was morc
pronounced in the resistant cultivar than in the susceptible one (1974b). Peroxidase
activity after inoculation was higher in the resistant cultivar as compared
with the suscep'ible type (1974c). Higher free amino acid L-cystine (1975a), and
higher catalase activity (1975b) in the resistant type were also found.
Control Measures
Sattar (1933) suggested disinfecting externally contaminated seed in 0.5% copper
sulphate solution for 10 minutes and treating internally infected seed by
presoaking in water at 20°C for 6 hr and then dipping it in hot water at 53"C for
15 minutes.
Chauhan and Singh (1966) reported that Aretan at 300 gtg/ml and Ceresan
wet at 2000 gag/ml gave 100% control of blight on chickpea. Vir and Grewal
(1974d) reported that Captan at 1 kg per 400 liters of water was found effective
when sprayed four times and Zineb was next in efficiency.
References
AUJLA, S.S. 1964. Study on eleven isolates of Phyllosticta rabie (Pass. Trot.,) the causal agent of
gram blight in the Punjab. Indian Phytopath. 17:83-87.
AUJLA, S.S. and BEDI, P.S. 1967. Relative reaction of different varieties of gram to blight disease
incited by Phyllosticta rabiei (Pass.) Trot. in the Punjab. J. Res. Punjab agric. Univ. 4:214-216.
BEDI, K.S. 1961. Outbreak of gram blight in Punjab in 1958-59. Plant Prot. Bull. 12:24-25.
BEDI, K.S. and ATHWAL, D.C. 1962. C235 is the answer to blight. Indian Fmg. 12(9):20-22
BEDI, P.S. and AUJLA, S.S. 1969. Variability in Phyllosticta rabiei (Pass.) Trott., the incitant of
blight disease of gram. J. Res. Punjab agric. U-niv. 6:103-106.
BUTLER, E.J. 1918. Fungi and Diseases in PlInts. Thacker Spink & Co. Calcutta, India. pp.
268-271.
CHAUHAN, L.S. and SINGH, B.K. 1966. Effect of fungicides on the growth of Ascochyta rabiei,
causal organism of gram blight. Labdev J. Sci. Tech. 4:57-58.
DEP. AGR., PUNJAB 1938. Plant Diseases. Rep., 1936-37. pp. 52-586.
DEP. AGR., UNITED PROVINCES 1949. Annual Administrative Report for the year 1947-48.
89 pp.