INDIAN SCIENCE CONGRESS - India Environment Portal

16
Proc. 98th Indian Science Congress, Part II : Abstracts of Oral/Poster Presentation
Application of pesticide compounds to soil affected the germination, shoot and
root growth, nodulation and N- content in different ways. 2,4-D completely inhibited
seed germination at 1500 µg/ml. In streptomycin, Aureofungin, Thiram, Carbofunran,
Thiodan, Hexacap, Difolatan and calixin less than 50% germination was observed.
In case of RH-124 and Calixin seeds were germinated but did not survive after 30
days at 1500 µg/ml and 80ppm respectively. In Dithane Z-78, Ceresan, Dithane M-
45, Blitox, Blitane, Brassicol, Topsin-M, RH-124, Bavistin, Disystan, Dasanit and
Hexafeb 50-90% seed germination was observed. Rovral give 100% germination.
Shoot length was stimulated by Bavistin, Blitox, Brassicol, Ceresan, Dithane Z-78,
Hexacap and Disystan while it was inhibited by other compounds. Similarly
stimulation of nodule formation was seen in Bavistin, Blitox, Brassicol, Ceresan,
Rovral and Thiram. Consequently increased due to these compounds. Difolatan,
Hexafeb, Thiram and Dasanit, however, delayed flowering period.
20. Taxonomic Studies on the Genus Psathyrella from Punjab
M. K. Saini, Harwinder Kaur, N. S. Atri and Amanjeet Kaur
Department of Botany,
Punjabi University,
Patiala-147002
Keywords : Taxonomy, mushrooms, Psathyrella
A number of fungal forays were undertaken in the past decade to various
localities of Punjab, with an aim to collect the agarics from the wild. As a result
of these forays, 24 collections were found to be falling under the 10 species of
genus Psathyrella (Fr.) Quél. of family Psathyrellaceae. The collections were
taxonomically worked out for their macroscopic and microscopic details. The 10
species of Psathyrella included in this paper are P. naivashaiensis Pegler var.
macrospora, P. singeri Smith, P. incerta (Peck) Smith. , P. longistriata (Murrill)
Smith, P. obtusata (Fr.) Smith, P. moshiana Pegler, P. lithocarpi Smith, P.
spintrigera (Fr.) Konr. & Maubl. , P. atroumbonata Pegler, and P. candolleana
(Fr.) Maire. . Out of these, first six are first time reports from India and one new
variety, namely P. naivashaiensis Pegler var. macrospora has been proposed. For
all these taxa, the taxonomic details are given. P. lithocarpi is being reported for
first time from North India while the other three species are re-reported.