Threshing Damage to Radicle Apex Affects Geotropic Response of Winterfat
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The Geotropic Response in Asterina
Upon a surface inclined at angle alpha Asterina gibbosa orients upward during negatively geotropic creeping until the average angle (theta) of the path is such that Delta sin theta/Delta sin alpha = const. This is true also in positively geotropic movement. The direction of orientation may be temporarily reversed by mechanical disturbance. The variation of theta is greater at low slopes. Tests ...
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ژورنال
عنوان ژورنال: Journal of Range Management
سال: 1984
ISSN: 0022-409X
DOI: 10.2307/3899141