By N. Sunderland, E. W. Simon, J. Heslop-Harrison

Views in Experimental Biology: quantity 2, Botany is a suite of papers awarded at a distinct assembly held on the college of Cambridge from July sixteenth to nineteenth, 1974. This quantity contains numerous subject matters of curiosity within the box of botany.
This e-book covers a variety of issues in plant body structure together with phone biking in meristems; leaf development; photoperiodic induction of flowering in crops; grain yield; and the function of hormones in plant morphogenesis. It additionally discusses the expansion and improvement of chloroplasts, etioplasts, and plastids. the remainder chapters speak about the biosynthesis of glutamine, amino acids, proteins and shipping tactics in plant cells, algal membranes, root platforms, and the full plant.
This quantity is of curiosity to younger researchers of experimental biology and undergraduates who search a resource of connection with a number of organic issues.

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Exp. Bot. 17,762-770. HUSAIN, I. and ASPINALL, D. (1970) Water stress and apical morphogenesis in barley. Ann. Bot. NS 3 4 , 393-407. KRIEDEMANN, P. E. (1971) Photosynthesis and transpiration as a function of gaseous diffusive resistances in orange leaves. Physiologia PI. 2 4 , 218-225. MILTHORPE, F. L. (1959) Studies on the expansion of the leaf surface. I. The influence of temperature. /. exp. Bot. 10,233-249. MILTHORPE, F. L. and MOORBY, J. (1969) Vascular transport and its significance in plant growth.

It is surprising that no quantitative studies have yet appeared dealing with the increase in area of leaves of a plant. . ' Gregory's classic studies were extended by F. J. Richards and many others so that, some fifty years later, it is possible to predict—with reasonable precision but often inadequate understanding—the size, form and physiology of successive leaves of a plant axis over a range of environments. In this paper, I will confine discussion to a current assessment of events on a single stem axis, leaving aside the important issue of generation of new axes and, reluctantly, abandoning any attempt to present a historical perspective.

1. Minimum number of photoperiodic cycles of different lengths required to induce flowering in the long-day plant Epilobium adenocaulon. a seriously detrimental effect. One might almost speak of a dark-break effect or 'darkflash' when plants given as little as 20 min darkness per 24-hr period required more inductive cycles than those held in continuous light. g. four cycles of continuous light caused 100 per cent flowering, whereas four cycles of 22 hr light gave no flowering. Another distinct difference in behaviour is that in LD plants interruption of a number of inductive LD cycles by non-inductive SD cycles appears not to diminish the inductive effect of the favourable cycles appreciably, unless the interruption lasts for several, if not many, cycles.

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