Ecological studies for vegetation management on the stand dominated by Sasa, 3: On the elongation and branching type of rhizome of Sasa senanensis
1990
Saijoh, Y. (Gifu Univ. (Japan). Faculty of Agriculture)
In this study, rhizome formation based on the elongation and branching type of clone in Sasa senanensis are discussed. The clone of Sasa senanensis has sympodial and monopodial type of rhizome. The rhizome often repeats sympodial branching for five or six consecutive years after developed seedling. Thereafter, the branching form transforms from sympodial type to monopodial type. Most of the terminal buds of sympodial rhizome grow to the culm, but the terminal bud of monopodial types does not sprout culm. The total number of nodes in each of the branched rhizome developed above 7-123 nodes, but the annual numbers were 14-28 nodes with sympodial type and 49 nodes with monopodial type. New culms appeared from the lateral bud of the aged rhizomes, but the culms did not sprout from the growing rhizomes (current year rhizome). The aged rhizomes in the third year after the last branching sprouted culm of a different age in the clone of Sasa senanensis. Accordingly, this growth form is considered to ward off risk to the subsistence of the Sasa community
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