東京灣産アサクサノリの種類(豫報)

須藤 俊造

doi:10.2331/suisan.15.649

Distinction among Forms of the “Asakusanori” (Porphyra) in the Tokyo Bay. A preliminary note

S. SUTO

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JOURNAL FREE ACCESS

1950 Volume 15 Issue 11 Pages 649-652

DOI https://doi.org/10.2331/suisan.15.649

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Published: March 25, 1950 Received: - Available on J-STAGE: February 29, 2008 Accepted: May 30, 1949 Advance online publication: - Revised: -
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Date of correction: February 29, 2008 Reason for correction: - Correction: ABSTRACT Details: Wrong : The “Asaksanori” (the laver cultivated in Japan) has been supposed to be separable into several forms, but to distinguish decidedly in each form is difficult for their simple organization and their much variable shape. Kunieda³) proposed that the number of horizontally divided cells of a sporeling just before the appearance of the first virtical division -“n”- makes the most reliable criterion for forms.
By observing “n”, the author divided the “Asakusanori” in the Tokyo Bay into seven forms (Cf. Fig. 1 and Table 1). A point of importance is that other characters beside “n“ of these forms also change hand in hand with “n“ The form 1-4 multiply sexually and asexually, the form 5-7 only sexually. The shape of the fronds is round in the form 1, slender in the form 6, most slender in the form 7. The form 5-7 luxiliate early in winter, the form 1-2 late in winter.
Right : The “Asaksanori” (the laver cultivated in Japan) has been supposed to be separable into several forms, but to distinguish decidedly in each form is difficult for their simple organization and their much variable shape. Kunieda³⁾ proposed that the number of horizontally divided cells of a sporeling just before the appearance of the first virtical division -“n”- makes the most reliable criterion for forms.
By observing “n”, the author divided the “Asakusanori” in the Tokyo Bay into seven forms (Cf. Fig. 1 and Table 1). A point of importance is that other characters beside “n” of these forms also change hand in hand with “n”. The form 1-4 multiply sexually and asexually, the form 5-7 only sexually. The shape of the fronds is round in the form 1, slender in the form 6, most slender in the form 7. The form 5-7 luxiliate early in winter, the form 1-2 late in winter.

Date of correction: February 29, 2008 Reason for correction: - Correction: PDF FILE Details: -

Abstract

The “Asaksanori” (the laver cultivated in Japan) has been supposed to be separable into several forms, but to distinguish decidedly in each form is difficult for their simple organization and their much variable shape. Kunieda³⁾ proposed that the number of horizontally divided cells of a sporeling just before the appearance of the first virtical division -“n”- makes the most reliable criterion for forms.
By observing “n”, the author divided the “Asakusanori” in the Tokyo Bay into seven forms (Cf. Fig. 1 and Table 1). A point of importance is that other characters beside “n” of these forms also change hand in hand with “n”. The form 1-4 multiply sexually and asexually, the form 5-7 only sexually. The shape of the fronds is round in the form 1, slender in the form 6, most slender in the form 7. The form 5-7 luxiliate early in winter, the form 1-2 late in winter.

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