Polysaccharide Composition of Leaves
PLUM leaves (Prunus domestica) contain sufficient amounts of starch, cellulose, hemicellulose, and pectic substances to recommend them for studies of the biosynthesis and possible inter-relationships of these leaf polysaccharides and their monosaccharide precursors1. Experiments involving photosynthesis by plum leaves in carbon dioxide labelled with carbon-14 and subsequent fractionation of the leaf polysaccharides revealed marked differences, both in the extent to which carbon-14 was incorporated into the different monosaccharides of each fraction, and also in the specific activities of each monosaccharide from different fractions2,3. Further investigations could be facilitated by using leaves relatively richer than plum leaves in any one polysaccharide constituent. There is little information on this point, consequently a diversity of leaves has been examined for polysaccharides (Table 1).
Influence of temperature and growth stage on the diurnal fluctuation in the non‐structural carbohydrate content of kikuyu (Pennisetum clandestinum Hochst)
The non‐structural carbohydrates of kikuyu (Pennisetum clandestinum Hochst) seem to consist mainly of sucrose. Total non‐structural carbohydrate content increased rapidly during the morning and reached maximum concentration in the afternoon. After sunset, the concentration decreased rapidly, reaching a minimum level by midnight. Low temperatures resulted in a significantly higher non‐structural carbohydrate content in all plant fractions than at warmer growth temperatures. Non‐structural carbohydrate concentrations were higher in stem tissue than in leaf material and the values were higher in 3‐week than in 6‐week regrowth.
Alternative Energy: Political, Economic, and Social Feasibility
Chapter 1 Foreword Chapter 2 Why Alternative Energy and Fuels? Chapter 3 Studying Public Policy and Alternative Energy/Fuels Chapter 4 Overview of Alternative Energy and Fuels and Their Uses Chapter 5 Alternative Energy/Fuels as a Public Policy Innovation Chapter 6 Solar Energy Chapter 7 Wind Energy Chapter 8 Geothermal Energy Chapter 9 New Century Fuels and Their Uses Chapter 10 Historical Precedents: Alternative Energy/Fuels and Legitimacy Issues 11 Public Policy, Institutional Developments and Policy Interests 12 Practical Demonstration of the Economics of Alternative Energy Chapter 13 Conclusion: The Future of Alternative Energy