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Advances in Photosynthesis Fundamental Aspects Part 10

Tham khảo tài liệu 'advances in photosynthesis fundamental aspects part 10', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 262 Advances in Photosynthesis - Fundamental Aspects Fig. 1. Initial surveys of radish showed that applications of high volumes of 1 mM tetramethylglucopyranose formulations 1 mM TMG to shoots significantly n 36 p 0.05 enhanced root mean dry weights as compared to Nutrient Control. Means are marked as small open circles at the midpoint of error bars that indicate SE. Fig. 2. As a result of foliar applications of 3 mM tetramethylglucopyranose 3 mM TMG applied at 186 L ha a volume typical for row crops shoot mean dry weights of corn improved significantly n 11 p 0.004 as compared to Nutrient Control. Error bars indicate SE. 263 The Path of Carbon in Photosynthesis - XXVIII - Response of Plants to Polyalkylglucopyranose and Polyacylglucopyranose Fig. 3. Foliar application of tetraacetylglucopyranose 10 mM TAG to shoots of radish resulted in a significant n 11 p 0.004 increase of root mean dry weight as compared to Nutrient Control. Error bars indicate SE. We investigated a process for the chemical synthesis of our mixed polyacylglucopyranoses MPG at different temperatures to control the reaction and results are summarized in Figure 4. Between 60 and 72 C we succeeded in stocking supplies that we manufactured in 500 gram batches. We incorporated 4 mM and 8 mM tetraacetylglucopyranose TAG into our tests as positive controls to compare against the different 60 and 72 C batches of 4 mM 8 mM and 12 mM MPG. Treatments with untreated Control Nutrient Control and 12 mM MPG resulted in no difference of growth. In contrast 4 mM and 8 mM concentrations showed significantly n 36 p 0.05 higher vegetative yields than controls. With similar results from these two different batches comparable to tetraacetylglucopyranose we extended tests to concentrations on various species of plants. On Canola responses to foliar applications of 3 mM mixed polyacetylglucopyranoses 4 mM tetraacetylglucopyranose and 309 mM methylglucopyranoside were compared. All treatments contained 40 mM ammonium .