NaCl脅迫對(duì)嫁接番茄生長(zhǎng)和光合特性的影響_圖文

1、 4 NaCl 1 2 NaCl 5, 6 NaCl Ci Ls 7 Gs Ls Gs Ci 2d Gs S1 2d Gs Pn Gs Pn Ci NaCl Gs Pn S1 Ci Gs Ls G1 Ls 10d Ls S1 Pn Ci Ls 5d Gs Pn Pn Ci G1 Gs Ls Pn Ci G1 8 ABA CO2 CO2 WUE Pn CO2 Tr CO2 0.64 Pn Tr Gs Ls 11 H2O 9 Gs WUE Gs WUE 10 Tr 2d Pn Pn WUE Tr WUE 5d WUE 10d WUE Pn Tr Gs 6 1 25 2 3 4 5 6 317 34

2、5 29 . . . . . NaCl 2002, 22 (2: 278 284 . 2003, 14 (12: 2237 2240 . . . , 1998, 29 (2: 249 Na+ K+ . 256 , 2004, 36 (1: , 2002, (6: 28 29 . . 1998, 15 5 10 13 7 Farquhar G D, Sharkey T D. Stomatal conductance and photosynthesis. Annu Rev Plant Physiol, 1982, 33: 8 Davies W J, Wilkinson S, Loveys B.

3、Stomatal control by chemical signaling and the exploitation of this mechanism to increase water use efficiency in agriculture. New Phytol, 2002, 153: 449 10 29 (3: 197 11 202 . . , 2004, 2 6 7 . WUE 460 370 2002, . 9 Webb A A R, Baker A J. Stomatal biology: new techniques, new challenges. New Phytol

4、, 2002, 153: 365 Effects of NaCl Stress on Growth and Photosynthetic Characteristics in Grafted Tomato Seedlings Chen Shufang , Zhu Yuelin, Hu Chunmei Nanjing 210095, China College of Horticulture, Nanjing Agricultural University, Abstract: Comparison of plant growth and photosynthetic characteristi

5、cs was made between grafted and own-root tomato (Lycopersicon esculentum Mill. seedlings under NaCl stress. The following results were obtained. Plant growth was significantly inhibited in own-root and grafted tomato seedlings, but the inhibiting effect in grafted plants was lower than that in own-r

6、oot plants. At the early stage of stress (2 d and 5 d, the inhibition of photosynthesis of own-root plant was mainly caused by stomatal factor, while water use efficiency (WUE was elevated. At the late stage of stress (10 d, non-stomatal limitation became the main factor. Photosynthesis of grafted p

7、lants was not inhibited significantly at the early stage of stress, the inhibition of photosynthesis was mainly caused by stomatal factor at the late stage of stress, and no significant change of WUE was observed during the whole stress period, which indicated that grafted plants possessed a stronger