Effect of temperature on needle anatomy and transpiration ofPiceamarianaafter bud initiation
作者:
N. B. Vanhinsberg,
S. J. Colombo,
期刊:
Canadian Journal of Forest Research
(NRC Available online 1990)
卷期:
Volume 20,
issue 5
页码: 598-601
ISSN:0045-5067
年代: 1990
DOI:10.1139/x90-078
出版商: NRC Research Press
数据来源: NRC
摘要:
Six-month-old black spruce (Piceamariana(Mill.) B.S.P.) container seedlings were placed in either a cool (18 ± 4: 6 ± 4 °C, light:dark) or a warm (26 ± 3: 18 ± 2 °C, light:dark) hardening regime for 12 weeks after bud initiation to assess the effects of temperature on needle maturation and transpiration. Stomatal transpiration was greater in warm-hardened seedlings than in cool-hardened seedlings. Cuticular transpiration was found to be greater in cool-hardened excised shoots than in warm-hardened shoots. Needle cuticle thickness increased in seedlings exposed to both warm and cool temperatures, however, cuticular growth after bud initiation was greater in the warm-hardening regime.
点击下载:
PDF
(398KB)
返 回