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The present paper gives the chromosome numbers of 27 species belonging to Angiosperms. Most of chromosome numbers established in Polish material was previously known for plants from other geographical regions or from Botanical Gardens. A new report is the presence of accessory chromosome in diploid set of Allium angulosum L.
The seeds developed after autogamy in four species of the Arabis hirsuta complex: A hirsuta (L.) Scop. (4x), A hornungiana Schur. (4x), A. planisiliqua (Pers.) Reichenb. (2x) and A. sagittata (Bertol.) DC. (2x) were compared with the seeds collected after reciprocal crosses in three combinations: A. hirsuta and A. planisiliqua, A. hirsuta and A. sagittata, A. hornungiana and A. planisiliqua. The comparison...
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