PNABD246.pdf
PNABD246.pdf
PNABD246.pdf
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*0531 Hooda, I. ; Grover, R.K. 1982. Studies on different isolates, age and<br />
quantity of inoculum of Rhizoctonia bataticola in relation to disease<br />
development in mung bean. INDIAN PHYTOPATHOLOGY, v.35(4):619-623. [En] [En<br />
Abst] (A:PS)<br />
Isolates of Rhizoctonia bataticola obtained from different plant species<br />
and plant parts of the same host differed in their morphological and cultural<br />
characteristics. However, there was no correlation between these<br />
characteristics and their pathogenicity on mungbean. Young inoculum (3-5 day<br />
old) was more infective than the old one (7-34 day old). Disease intensity<br />
increased with increasing inoculum concentration. [AS]<br />
*0532 Kush, A.K. 1982. Interaction between symbiosis and root pathogenesis<br />
in green gram (Vigna radiata L. Wilezek). PLANT AND SOIL, v.65(l):133-135.<br />
[En] [En Abstj (A:PS)<br />
A pot experiment, using cowpea Rhizobium and 1% inoculum of Rhizoctonia<br />
bataticola (Taub.) Butler was carried out on mungbean (Vigna radiata cv. PS 16)<br />
to study the interaction between symbiosis and root rot in terms of plant<br />
growth and nitrogen fixation. The microtomy of the infected roots showed<br />
distortion of the outer layers of root as a possible cause for antagonistic<br />
interaction of these two bio-processes. [AS]<br />
*0533 Nik, W.Z. ; Janggu, N. 1982. Studies of Rhizoctonia solani Kuhn on<br />
nungbean (Vigna radiata (L.) Wilczek). MALAYSIAN APPLIED BIOLOGY,<br />
v.11(2):103-110. [En] [En Abst] (A:PS)<br />
A study on some aspects of the pathogenicity and control of three isolates<br />
of Rhizoctonia solani Kuhn (the imperfect state of Thanatephorus cucumeris<br />
(Frank) Donk) has been investigated. Isolates of Rhizoctonia were taken from<br />
infected root, leaf and the seed of mungbean cv., U Thong. Isolates from root<br />
and leaf were found to be highly pathogenic and virulent to mungbean, causing<br />
severe pre- and post-emergence damping off, and pod rot. However, the dry<br />
weights of plants inoculated with the three isolates of the fungus differ<br />
significantly. An in vitro study of the efficacy of fungicides showed that<br />
Brassicol gave the best inhibition of growth of Rhizoctonta, followed by<br />
Thiram, captan, and Busan. LS 74-783 was found to be least effective. [AS]<br />
*0534 Bains, S.S. ; Jhooty, J.S. 1983. Sensitivity to fungitoxicants,<br />
cultural behaviour and pathogenicity of ihizoctonia solani isolates naturally<br />
occurring in Punjab. INDIAN JOURNAL OF ECOLOGY, v.10(2):274-278. [En] [En<br />
Abst] (REP.MB-2602)<br />
Rhizoctonia solani isolates varied in their response to systemic and<br />
non-systemic fungitoxicants. No single chemical was equally effective against<br />
all isolates. An isolate least pathogenic to different crops was the least<br />
sensitive to systemic and non-systemic fungitoxicants. This isolate was<br />
distinct in colour and in site of sclerotia formation in Petri plates on potato<br />
dextrose agar. Another isolate with a narrow host-range was also less sensitive<br />
to fungitoxicants but had sclerotial characters similar to other isolates.<br />
There was no relation among growth rate, hyphal thickness, level of sclerotia<br />
formation and pathogenicity of different isolates. On an average, benomyl and<br />
quintozene from systemic and non-systemic fungitoxicants respectively were most<br />
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