【摘 要】
：
The effects of salt stress (100 mmol L-1 , 200 mmol L-1 NaCl) on photosynthetic characteristics and photosystem Ⅱ (PSⅡ) activity in sweet sorghum seedling
【机 构】
：
Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
【出 处】
：
2rd International Symposium on Integrative Plant Biology第二届国
论文部分内容阅读
The effects of salt stress (100 mmol L-1 , 200 mmol L-1 NaCl) on photosynthetic characteristics and photosystem Ⅱ (PSⅡ) activity in sweet sorghum seedlings grown outdoors were carefully investigated in this study.Results showed that the Na+ content and the ratio of Na+/K+ in leaves increased significantly with increase of NaCl concentration.The net photosynthetic rate (Pn), the efficiency of excitation energy captured by open PS Ⅱ reaction centers (FvO/FmO), the photochemical quenching (qp) and the actual PSⅡ efficiency ((Φ)PSⅡ) all decreased while the non-photochemical quenching (NPQ) increased greatly with increasing NaCl concentration.Pn,-1FvO/FmO, qp and (Φ)PS had an ameliorative trend in the presence of 100 mmol L NaCl treatment, but this phenomenon did not appear in 200 mmol L-1 NaCl treatment.
其他文献
Rice is a very important food crop worldwide and also the classical monocotyledonous model organism.A mature rice panicle consists of one rachis (main axis)
Small non-coding RNAs (sRNAs), such as microRNAs (miRNAs) and small interfering RNAs (siRNAs), play a critical role in plant growth, development, metabolism
Biological soil crusts are highly specialized soil-surface consortia composed primarily of photoautotrophs, cyanobacteria, algae, lichens, mosses, and heter
李密在写作《陈情表》时,不仅措辞小心翼翼,且采取了一定的策略,以委婉的表达和出色的抒情艺术来打动晋武帝,最终成功逃过一劫.拟通过分析李密在《陈情表》中所采取的陈情策
最近，我家附近的街头巷尾，随处可见税法知识的宣传标语，我觉得可新鲜了。给我印象最深的是这条标语——诚信纳税，利国利民。看到它，我想起了一句话——税收是国家治理的基础和重要支柱，对什么是“税”产生了极大的兴趣。 一天晚上，我缠着媽妈给我讲关于税的故事。妈妈经不住我的软磨硬泡，总算答应了。但是，妈妈没有直接给我解释，而是问了我一个有趣的问题：“子夏，你说，如果你开了一家小店，每个月的收入并不多，你会
以《声声慢(寻寻觅觅)》为例,探寻王昌龄提出的“诗歌三境”——物境、情境、意境并以此引导学生感受古典诗歌作品中的物、情、意,以深度解读文本、对话作者.
随着信息技术的飞速发展，大数据技术的广泛应用，在大数据时代下全国高校思想政治教育面临着新的机遇：大数据技术实现n资源信息共享，以建立新时代思想政治教育机制，信息化对高校思
【摘 要】在高等职业教育中实施素质教育是培养高素质高端技能型人才的重要途径，现代化教学手段运用于现代高职教育已经普及。本文对现代素质教育中应用现代化教学手段进行了分析，指出今后进行素质教育注意的问题，为高职院校实施素质教育提供一定的参考。 【关键词】高职教育；现代素质教育；现代化教学手段 经过几年的实践，在高等职业教育中实施素质教育已经成为各高职院校和社会的共识，也成为高职院校培养高素质人才
IgASE1, isolated from the marine unicellular microalga Isochrysis galbana, encodes a fatty acid elongating component that is specific for linoleic acid (C18
Berry size is a complex trait controlled by QTLs.Not only a dramatic inter-species difference but an intra-species variation of berry size is observed in Ph