Articles written in Proceedings – Section B
Volume 18 Issue 5 November 1943 pp 109-118
Six additional cases of naturally occurring shoot-borne adventive roots on adult axes of herbaceous dicotyledons have been described in this paper.
These support the view of Priestley and Swingle that the site of initiation of a lateral root in adult hypocotyls and intemodes moves inwards from the pericycle to the flanks of the vascular cambium close to the newly differentiated xylem and phloem.
The radial growth of the hypocotyl of
Volume 22 Issue 1 July 1945 pp 10-17
In the study of the anatomy of the vegetative and flowering regions of
The unbranched condition of the flowering axis with extreme reduction of leaf lamina;
The greater activity of cambium in vegetative than in the flowering region which appears to be due to the difference of photosynthetic activities in the two regions of the plant; and
The endodermis which is well developed in the flowering region is only a ‘starch sheath’ in the vegetative region. The change from starch sheath to endodermis appears to be concerned with the xeromorphy of the flowering region indicated by the extreme reduction of the leaf lamina in this region.
Volume 23 Issue 6 June 1946 pp 249-259
Detailed studies on the initiation and development of axillary buds in
Works so far done on this problem in Ferns, Monocotyledons and Dicotyledons have been briefly reviewed.
In Ferns an axillary bud is initiated in the
In the shoot apices of Ferns, Monocotyledons and Dicotyledons leaf primordia are laid down first and buds are initiated in their axils later. A year may elapse between the laying down of the axillant leaves and formation of buds in their axils as reported in the winter buds of
Bud trace originates in the bud primordium and then differentiates backwards into the
As the buds normally originate in the axils of leaves which are removed some distance from the apex and which are growing vigorously or unfolding, it is suggested that their initiation is due to some physiological processes than to any specific qualities inherent in the apical meristem.