| measurement of ethylene emission from japanese red pine (pinus densiflora) under field conditions in nox-polluted areas. | emission of ethylene from the needles of japanese red pine, pinus densiflora, was measured in air-polluted areas in hiroshima, japan. we applied a suitable protocol to determine the rate of ethylene emission from the excised needles. the influence of excision of needles on ethylene emission was not detected during the first 4 h of incubation at 20 degrees c. ethylene emissions were low in the unpolluted (clean) areas regardless of the altitude or season. the emission of stress ethylene increased ... | 2001 | 11202743 |
| seasonal changes in needle water content and needle aba concentration of japanese red pine, pinus densiflora, in declining forests on mt. gokurakuji, hiroshima prefecture, japan. | to evaluate the effects of air pollution on the decline of pinus densiflora forests, various research has been conducted around mt. gokurakuji (34 degrees 23'n, 132 degrees 19'e, 693 m a.s.l.) north of the seto inland sea, west japan. to investigate the mechanisms responsible for decreases in photosynthesis (pn) and stomatal conductance (gl), delta13c of needles and seasonal changes in the water content (wc) and abscisic acid concentration (aba) of needles were measured in various stands. the de ... | 2006 | 16607566 |