PNABD246.pdf

lines were resistant, 14 moderately resistant, and 18 moderately susceptible. A
screening test in the wet season of 1973 showed that out of 620 lines, 9
cultivars were free, 48 were resistant and 52 were moderately resistant, while
at Gurdaspur the frequency of these classes was 31, 42, and 33, respectively.
[THH]
*0076 Chand, J.N. ; Yadav, O.P. ; Yadav, H.C. 1977. Reaction of genetic
stocks of mung bean to bacterial blight (Xanthomonas phaseoli). INDIAN
PHYTOPATHOLOGY, v.30(4):565. [EnJ (REP.iB-2089)
In all 105 different lines of mungbean
spot
were
under
screened
natural
against
infection
bacterial
conditions
leaf
during kharif 1975.
found
Of
to
these
be highly
15 were
resistant and 75 resistant.
one-month-old
Next season (kharif
plants
1976)
of these lines were artificilly inoculated
suspension with
of 48
a
hours old bacterial culture
mungbean
of Xanthomonas
lines tested,
phaseoli.
none
Of
was
the
immune,
90
only ML 8, ML 1O and Jalgaon 781 were
highly resistant. [THH]
*0077 Elec, J.V. ; Santos, I.S. 1977. Screening for induceA vAtants in
mungbean (Vigna radiata) resistant to powdery mildew (Erysiphe polygoni)
[Abst.]. IN: Induced mutations against plant diseases; Proceedings. Vienna
International Atomic Energy Agency. p.291 [En] (SB123.S96 1977)
MEETING: Symposium on the Use of Induced Mutation for Improving Diseases
Resistance in Crop Plants -- Vienna, Austria, Jan 31-Feb 4, 1977
A procedure for screening for resistance to powdery mildew (Erysiphe
polygoni D.C.) in mungbean (Vigna radiata (L.) Wilczek) was established prior
to commencing a mutation breeding program. Screening procedures were evaluated
using a resistance check (Acc. No.306) and a susceptibility check (MG 50-10A).
Seven-day-old seedlings were inoculated with powdery mildew and evaluated three
weeks later on a 0-5 rating scale. Attempts were also made to select tolerant
plants by selecting infected plants which had the capacity to produce at least
one pod with at least one seed. Differences in infectivity between experiments
were corrected by a weighted scale reading based on the resistance and
susceptibility checks. No specific races of Erysiphe polygoni have been
identified as yet, but this pathogen has been shown to infect a wide range of
other species, Hibiscus esculentus (okra), Capsicum sp. (pepper), Solanum
esculentum (eggplant), Euphorbia herta L., and Helotropium indicum L.
Preliminary screening of approximately 10,000 M2 plants following gamma
irradiation has not yet revealed any confirmed resistant or tolerant mutants.
[ASJ
*0078 Pandya, B.P. ; Singh, D.P. ; Sharma, B.L. 1977. Screening of mmgbean
[Vigna radiata (L.) Wiiczekj germplasn for field resistance to yellow mosaic
virus. TROPICAL GRAIN LEGUME BULLETIN, v.7:13-14. [En] (REP.MB-1757)
During kharif, 248 lines of mungbean together with a susceptible check,
Hybrid 45, were grown at the Crop Center of G. B. Pant University of
Agriculture and Technology. Out of 248 lines screened for field resistance to
mungbean yellow mosaic virus (MYMV), only one, Tarai Local, was r,sistant, 21
were moderately resistant and the rest were tolerant or susceptible. All the
lines resistant or moderately resistant to MYMV are viny or semi-viny plant
20