甜菜碱对盐碱胁迫下海岛棉幼苗光合作用及生物量积累的影响

严青青,张巨松,代健敏,窦巧巧

Effects of glycinebetain on photosynthesis and biomass accumulation of island cotton seedlings under saline alkali stress

Qing-Qing YAN,Ju-Song ZHANG,Jian-Min DAI,Qiao-Qiao DOU

表1 不同处理对海岛棉幼苗植株鲜重积累的影响

Table 1 Effects of different treatments on fresh weight of seedlings in island cotton

品种 Variety 盐碱浓度 Salt and alkali concentration (mmol L-1) 甜菜碱浓度 Betaine concentration (mmol L-1) 茎叶鲜重 Stem and leaf fresh weight (mg) 根鲜重 Root fresh weight (mg) 总鲜重 Total fresh weight (mg) 新海35号 0 0 7.89±0.17 a 1.98±0.12 a 9.87±0.28 a Xinhai 35 120 0 6.96±0.17 de 1.73±0.01 cd 8.70±0.18 c 30 7.57±0.12 abc 1.86±0.03 ab 9.43±0.14 ab 60 7.38±0.03 bcd 1.82±0.04 bc 9.21±0.06 bc 180 0 5.73±0.24 hi 1.42±0.01 h 7.16±0.24 e 30 6.22±0.18 fg 1.52±0.01 fgh 7.74±0.20 d 60 6.01±0.19 gh 1.47±0.05 gh 7.48±0.22 de 240 0 3.44±0.22 k 1.10±0.05 i 4.54±0.27 g 30 3.65±0.19 k 1.18±0.03 i 4.83±0.16 g 60 3.49±0.02 k 1.12±0.01 i 4.61±0.01 g 品种 Variety 盐碱浓度 Salt and alkali concentration (mmol L-1) 甜菜碱浓度 Betaine concentration (mmol L-1) 茎叶鲜重 Stem and leaf fresh weight (mg) 根鲜重 Root fresh weight (mg) 总鲜重 Total fresh weight (mg) 新海48号 0 0 7.75±0.14 ab 1.67±0.06 de 9.42±0.20 ab Xinhai 48 120 0 6.54±0.10 ef 1.45±0.06 gh 7.99±0.07 d 30 7.35±0.08 bcd 1.64±0.02 def 8.99±0.06 bc 60 7.11±0.18 cd 1.57±0.05 efg 8.68±0.21 c 180 0 5.10±0.19 j 1.04±0.01 i 6.14±0.19 f 30 5.50±0.07 ij 1.12±0.03 i 6.62±0.07 f 60 5.24±0.10 j 1.06±0.02 i 6.30±0.10 f 240 0 2.59±0.18 l 0.59±0.01 j 3.19±0.18 h 30 2.63±0.17 l 0.62±0.02 j 3.24±0.18 h 60 2.46±0.20 l 0.52±0.06 j 2.98±0.24 h