Najafi F, Khavari-Nejad R A, Rastgar-Jazii F, Sticklen M
Department of Biology, Tarbiat Moallem University, P.O. Box 15815-3587, Tehran, Iran.
Pak J Biol Sci. 2007 Aug 15;10(16):2752-5. doi: 10.3923/pjbs.2007.2752.2755.
The effects of salt stress were studied on growth and physiology of pea (Pisum sativum L. cv. Green Arrow) in a pot study. Pea plants were treated with NaCl at 0, 10, 30, 50 and 70 mM in Hoagland solution. Plants were harvested after 21 days for measurements of physiological parameters. The highest NAR and RGR were found in 10 mM NaCl. However, in 70 mM NaCl, RGR and RLGR were significantly decreased in respect of other concentrations of NaCl. In 50 and 70 mM NaCl, chlorophylls contents and photosynthetic rate, were significantly decreased and CO2 compensation concentration and respiration rate increased in comparison with control. In 10 and 30 mM NaCl gas exchanges and chlorophyll contents were not significantly decrease in respect of control. Results indicated that Pisum sativum L. cv. Green Arrow can tolerate to 70 mM NaCl, also growth of plants in 10 and 30 mM NaCl was better than that of those in 0 mM NaCl.
通过盆栽试验研究了盐胁迫对豌豆（Pisum sativum L. cv. Green Arrow）生长和生理的影响。豌豆植株在Hoagland溶液中分别用0、10、30、50和70 mM的NaCl进行处理。21天后收获植株以测定生理参数。在10 mM NaCl处理下，净同化率（NAR）和相对生长率（RGR）最高。然而，在70 mM NaCl处理下，与其他NaCl浓度相比，RGR和根相对生长率（RLGR）显著降低。在50和70 mM NaCl处理下，叶绿素含量和光合速率显著降低，与对照相比，二氧化碳补偿浓度和呼吸速率增加。在10和30 mM NaCl处理下，气体交换和叶绿素含量与对照相比没有显著降低。结果表明，豌豆品种Green Arrow能够耐受70 mM NaCl，而且在10和30 mM NaCl处理下植株的生长比在0 mM NaCl处理下更好。
