摘要
等渗Ca(NO3) 2 和NaCl溶液对番茄幼苗具有不同的盐效应。 2 8、 56mmol/LCa(NO3) 2 溶液对其生长的抑制作用小于等渗的NaCl溶液 ,而 84mmol/LCa(NO3) 2 溶液对幼苗生长的抑制程度与等渗的NaCl溶液无显著差异。Ca(NO3) 2 主要通过渗透胁迫影响植株生长 ;而NaCl主要通过离子胁迫抑制植株的生长 ,包括细胞质膜结构的破坏和K吸收的减少。
The tomato seedlings had different responses to iso osmotic Ca(NO 3) 2 and NaCl solution.The reduction of plant growth under 28 and 56mmol/L Ca(NO 3) 2 solution was greatly smaller than those under iso osmotic NaCl solution,but under 84mmol/L Ca(NO 3) 2 solution the inhibition was the same as that under the iso osmotic NaCl solution.The plant growth was inhibited by high concentration of Ca(NO 3) 2 mainly through osmotic stress.Ion stress is the main reason of growth inhibition under NaCl:including destroy of membrane structure and reduction of potassium uptake.
出处
《园艺学报》
CAS
CSCD
北大核心
2001年第1期31-35,共5页
Acta Horticulturae Sinica
基金
国家自然科学基金重点资助项目 !(39830 2 30 )
关键词
番茄
盐分胁迫
盐害
幼苗生长
土壤盐分
Tomato
Salt stress
Salt toxicity
Ca(NO_3)_2
NaCl
Salt response
