Spatial distribution of tetrasporophytes and gametophytes in four Maritime populations of <i>Chondrus crispus</i>

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Abstract

<jats:p> Four commercially important populations of Chondrus crispus Stackhouse were studied to assess the distribution of lambda-carrageenan (tetrasporophytes) and kappa-carrageenan (gametophytes) producing plants. Populations from Rustico, North Lake, and Miminegash, Prince Edward Island, were 22.2, 22.8, and 31.2%, respectively, in the percentage of tetrasporophytes. The population at Toney River, Nova Scotia, consisted of 51.4% tetrasporophytes, significantly (P < 0.01) higher than the other three populations. In each of the four populations significantly (P < 0.05 or P < 0.01) more tetrasporophytes were observed in the outermost portions of the beds. When the data from all populations were pooled, the inner beds had 23.0% tetrasporophytes while the outer beds had 40.4% and thus differed significantly (P < 0.01). The possible reasons for these distributions are discussed. </jats:p>

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