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The development and abortion of embryo and endosperm in the cross Hordeum vulgare x Secale cereale
Post-fertilization breakdown in the reproductive processes is frequently the cause of incompatibility in interspecific and intergeneric crosses in plants. Cooper and Brink (1940) report that sterility in the crosses ...
Pontoporeia and mysis in lakes of the Canadian northwest : a study of their ecology, biology and economic importance in Great Slave Lake and Lake Athabaska : including a re-evaluation of the theories of the origin of these species in fresh water lakes : a thesis submitted to the Committee on graduate studies in partial fulfilment of the requirements for the degree of Master of arts in the Department of biology, University of Saskatchewan
Since the middle of the last century, a considerable amount of scientific literature has been published on the so called “glacial marine relicts,” Mysis oculata var. relicta Lovan and Pontoporeia affinis Lindstrom. Intensive ...
Inconnu (Stenodus Leucichthys MacKenzii) In Great Slave Lake and adjoining waters
The inconnu, Stenodus leucichthys mackenzii Richardson, is a fish found in the Arctic Ocean off the coast of North America, and in some of the rivers which flow into it. It has been known to science since 1823 when ...