Caryologia, Vol. 51, no. 2, 1998

Cytotaxonomic studies in Vigna. IV. Variation of the number of active and silent rDNA sites in Vigna unguiculata populations

INCORONATA GALASSO, LUISA SUBLIMI SAPONETTI and DOMENICO PIGNONE

CNR, Istituto del Germoplasma, 70126 Bari, Italy

Synapsis in supernumerary chromosomes of Prochilodus lineatus (Teleostei: Prochilodontidae)

ANA LUCIA DIAS, FAUSTO FORESTI *, and CLAUDIO OLIVEIRA *

Departamento de Biologia Geral, Centro de Ciencias Biol6gicas, Universidade Estadual de Londrina, Londrina,

Parana; and * Departamento de Morfologia, Instituto de Biociencias, Universidade Estadual Paulista, Botucatu, Sao

Paulo, Brazil.

Neo-XY chromosome sex determination in four species of the pamphagid grasshoppers (Orthoptera, Acridoidea, Pamphagidae) from Bulgaria

A. BUGROV and S. GROZEV A *,

Institute of Systematics and Ecology of Animals, Siberian Branch, Russian Academy of ScienceN, ovosibirsk 630091,

and Novosibirsk State University, Dept. Natural Sci., 630090 Novosibirsk, Russia; ;* Institute of Zoology, Bulgarian

Academy of Science, 1000 Sofia, Bulgaria.

Estimation of nuclear DNA content in Sesleria (Poaceae)

MARTIN A. LYSAK * and JAROSLAV DOLEZEL **,

* Department of Botany, Faculty of Sciences, Palacky University, Olomouc, CZ-77200; *, De Montfort University

Norman Borlaug Centre for Plant Sciences, Institute of Experimental Botany,O lomouc, CZ-77200, Czech Republic.

Nucleolar chromosome variation and evolution in the genus Vicia

M.S. BISHT, K. KESAVACHARYULU and S.N. RAINA *

Laboratory of Cellular and Molecular Cytogenetics, Department of Botany, University of Delhi, Delhi -

110 007, India.

Genetic diversity among Plantagos. XXXIII. Interchanges in Plantago ovata Forsk.

L. PADHA, S. SAREEN, R. MANGOTRA and A.K. KOUL

Department of Biosciences, University of Jammu, Jammu-180 004, India.

Nuclear DNA content and chiasma behaviour in six species of Gymnocalycium Pfeiff. of the family Cactaceae

A. B. DAS and P. DAS

Cytogenetics Laboratory, Regional Plant Resource Centre, Bhubaneswar 751015, Orissa, India.

NOR-bearing chromosomal associations revealed through silver and sequential chromomycin A3 staining in the mirror carp, Cyprinus carpio

RUKHSANA ANJUM and MALGORZATA JANKUN* **

Ministry of Food, Agriculture and Cooperatives, Livestock Division, Government of Pakistan, Islamabad, Pakistan; O* lsztyn

University of Agriculture and Technology, Dept. of Basic Fishery Sciences, 10-718 Olsztyn-Kortowo, Poland.