Response of sugar beet (Beta vulgaris L.) yield and biochemical composition to elevated CO2 and temperature at two nitrogen applications
Response of sugar beet (Beta vulgaris L.) yield and biochemical composition to elevated CO2 and temperature at two nitrogen applications
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DOI：
10.1046/j.1365-3040.1998.00327.x
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发表时间：
1998-08-01
影响因子：
7.3
通讯作者：
Lawlor, DW
中科院分区：
文献类型：
--
作者：
Demmers-Derks, H;Mitchell, RAC;Lawlor, DW
对甜菜（Beta vulgaris L.）在1993年、1994年和1995年的三个实验中，研究了当前和升高的CO2和温度单独和组合的影响以及它们与充足和不足的氮供应（分别为HN和LN）的相互作用。所有实验的平均值，升高的CO2（1993年为600 μ mol mol（-1），1994年和1995年为700 μ mol mol（-1））使最终收获时的总干重增加21% HN和LN植物的根干重分别增加26%（CI = 19，32）和12%（CI = 6，18）。温度升高使HN和LN植株的总干重分别下降11%（CI =-15，-7）和9%（CI =-15，-5），根干重分别下降7%（CI =-12，-2）和7%（CI =-10，0）。温度和CO2对总干质量和根干质量的影响不显著。无论是CO2浓度升高，也不显着影响单位根干质量的蔗糖浓度。甘氨酸甜菜碱和氨基酸的浓度，测量为α-氨基-N，在两个N应用中的CO2升高降低;甘氨酸甜菜碱由13%（CI = - 21，- 5）和16%（CI = - 24，- 8）和α-氨基-N由24%（CI = - 36，- 11）和16%（CI = - 26，- 5）的HN和LN，分别。温度升高使HN和LN植株的α-氨基-N分别增加76%（CI = 50，107）和21%（CI = 7，36），但对甘氨酸甜菜碱没有影响。
Effects on sugar beet (Beta vulgaris L.) of current and elevated CO2 and temperature alone and in combination and their interactions with abundant and deficient nitrogen supply (HN and LN, respectively) have been studied in three experiments in 1993, 1994 and 1995. Averaged over all experiments, elevated CO2 (600 mu mol mol(-1) in 1993 and 700 mu mol mol-l in 1994 and 1995) increased total dry mass at final harvest by 21% (95% confidence interval (CI) = 21, 22) and 11% (CI = 6, 15) and root dry mass by 26% (CI = 19, 32) and 12% (CI = 6, 18) for HN and LN plants, respectively. Warmer temperature decreased total dry mass by 11% (CI = - 15, - 7) and 9% (CI = - 15, - 5) and root dry mass by 7% (CI = - 12, - 2) and 7% (CI = - 10, 0) for HN and LN plants, respectively. There was no significant interaction between temperature and CO2 on total or root dry mass. Neither elevated CO2 nor temperature significantly affected sucrose concentration per unit root dry mass. Concentrations of glycinebetaine and of amino acids, measured as alpha-amino-N, decreased in elevated CO2 in both N applications; glycinebetaine by 13% (CI = - 21, - 5) and 16% (CI = - 24, - 8) and alpha-amino-N by 24% (CI = - 36, - 11) and 16% (CI = - 26, - 5) for HN and LN, respectively. Warmer temperature increased alpha-amino-N, by 76% (CI = 50, 107) for HN and 21% (CI = 7, 36) for LN plants, but not glycinebetaine.