检索结果-南通市图书馆

Photosynthetic Characteristics of Clerodendrum trichotomum Thumb. Responses to Drought, Salt and water-logging Stresses

引用

Journal of Northeast Agricultural University(English Edition) 2017年第3期24卷 1-9页

作者： Xie Fu-chun Wang Hua-tian Qin Dong College of Horticulture Northeast Agricultural University Forestry College Shandong Agricultural University

In order to reveal the photosynthetic characteristics of C. trichotomum responses to drought, salt and water-logging stresses, one-year-old potted seedlings were taken as materials, and the several stresses including natural drought, submergence stress, water-logging and different salt treatments （0.2%, 0.4%, 0.6% and 0.8% NaCl） were carried out on August 15, 2012. The morphological and photosynthetic characteristics were observed and determined. The results showed that adverse enviromental stress had a significant effect on the morphological changes and photosynthetic characteristics of C. trichotomum. On the 14th day after natural drought, the leaves wilted and could not recovery at night, and 60% of the seedlings could recover after re-watering. From the 7th day to the 10th day after submergence stress treatment, the 2nd and the 3rd leaves at the base of 60% seedling turned yellow and the lenticels were observed. At the early stage of water-logging stress, white lenticels appeared at the base of seedlings, and the leaves wilted, chlorina and fallen off on the 8th day. A large number of leaves fallen off under 0.6% NaCl or more salt stress, and even the whole plant died. The chlorophyll content, net photosynthetic rate （Pn） and transpiration rate （Tr） decreased gradually with the stress process, such as 8 days after natural drought, less than 0.4% salt stress and water-logging stress, but the changes were not significant compared with those of the control. With the increase of the stress intensity and the prolonged time, the changes of photosynthetic index were significant. All the results indicated that C. trichotomum had a certain degree of tolerance to drought, water and salt, but it was not suitable for living, in water-logging condition for a long time.

关键词： Clerodendrum trichotomum Thumb. natural drought submergence stress water-logging salt stress photosyntheticcharacteristic

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Overview of farming practices in the water-logged areas of Kerala, India

引用

International Journal of Agricultural and Biological Engineering 2010年第4期3卷 28-43页

作者： Jayan P R Nithya Sathyanathan Department of Farm Power Machinery&Energy Kelappaji College of Agricultural Engineering and TechnologyTavanurMalappuramKerala-679573India

water logging is one of the major problems of land degradation in *** management of soil,water and crops in irrigated lands,and obstruction of natural drainage systems by various developmental activities are the main factors responsible for disrupting the balance of inflow and outflow of water,leading to water *** irrigation has increased by leaps and bounds,its attendant problem of water logging is now plaguing substantial area of agricultural *** low-lying areas of Kerala,the southernmost state of India,are potential areas of paddy *** these areas are situated below the mean sea level and have serious problems of *** twenty five percent of total paddy lands in Kerala are water-logged;especially in Kuttanad,Pokkali,Kole and Kaipad *** integrated rice-shrimp/prawn farming are practiced in these *** rice crop followed by shrimp/prawn capture provides a substantial subsidiary income to the *** major issues faced in these areas are mainly related to pollution,eutrophication,encroachment,reclamation,mining and biodiversity *** a result of denuding,polluting,draining,filling,etc.,these water-logged areas have been under severe *** potentiality of these areas should be exploited and necessary measures in conserving these areas need to be *** farming where a judicious mix of integrated enterprise concept of resource based planning based on public participation is slowly developing in these areas.A clear perspective and a management system that ensures participation and regulation in resource use are essential.

关键词： wetlands ecosystems India water-logging rice-shrimp farming Kuttanad-Pokkali-Kole-Kaipad

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：