๐”– Bobbio Scriptorium
โœฆ   LIBER   โœฆ

Growth initiation in the geotropic response of the wheat node

โœ Scribed by Ian G. Bridges; Malcolm B. Wilkins

Book ID
104749282
Publisher
Springer-Verlag
Year
1973
Tongue
English
Weight
532 KB
Volume
112
Category
Article
ISSN
0032-0935

No coin nor oath required. For personal study only.

โœฆ Synopsis

The geotropic response in stems of Triticum aestivum occurs at the leaf sheath bases. Growth is initiated in the lower halves of these organs after orientation into the horizontal position. Lateral transport of growth hormone is not involved in the development of curvature. Continuous stimulation is necessary to maintain the response.

Growth can be initiated in smM1 pieces of tissue excised from the leaf sheath base but this is entirely dependent upon the precise orientation of the tissue in the gravitationM field. Growth occurs only when the segment is orientated horizontally with the outer epidermis facing downwards. IAA is able to initiate growth in nongeo-induced tissue segments of the leaf sheath base but this effect appears to differ from the geo-induced growth.

* IAA-Indole-3-acetie acid; ABA-RS(:L) abscisic acid; CFYf-ehlorofluorenol methyl ester; GA a --gibberellic acid.

๐Ÿ“œ SIMILAR VOLUMES

The source and lateral transport of grow
The source and lateral transport of growth inhibitors in geotropically stimulated roots ofZea maysandPisum sativum
โœ Stanley Shaw; Malcolm B. Wilkins ๐Ÿ“‚ Article ๐Ÿ“… 1973 ๐Ÿ› Springer-Verlag ๐ŸŒ English โš– 935 KB

The positive geotropic responses of the primary roots of Zea mays and Pisum sativum seedlings depend upon at least one growth inhibiting factor which arises in the root cap and which moves basipetally through the apex into the extending zone. The root apex (as distinct from the cap) and the regions