检索结果-南通市图书馆

Review of Research on Nutritional physiological mechanism and Nutritional Diagnosis of Magnesium in Fruit Trees

在线全文

学校读者我要写书评

暂无评论

Asian Agricultural Research 2022年第7期14卷 60-62页

作者： Huan LIU Jie LI Yu WANG Liying FAN Jicheng HAN Changli Fruit Tree Institute Hebei Academy of Agriculture and Forestry SciencesChangli 066600China

Magnesium is an essential nutrient element for the growth and development of fruit *** not only participates in photosynthesis of plants,but also promotes physiological and biochemical reactions such as carbohydrate and protein synthesis,enzyme activation,and reactive oxygen species(ROS)*** deficiency in fruit trees will directly influence the growth and development of trees and the improvement of fruit *** study mainly reviews the nutritional and physiological mechanism of magnesium in plants and the nutritional diagnosis of magnesium deficiency in fruit trees,in order to provide a theoretical basis for further research on magnesium nutrition in fruit trees,and accordingly provide a certain reference for the application of magnesium fertilizer.

关键词： Magnesium element Fruit tree physiological mechanism Nutritional diagnosis

physiological Analysis of Drought Resistance of Seven Cultivars Spring Wheat in Northern Regions of China

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

Journal of Northeast Agricultural University(English Edition) 2024年第2期31卷 1-12页

作者： Gao Fengmei Zhang Fuzhi Zhao Yuanling Li Tie Li Dongmei Sun Minglong Zhang Qichang Liu Ningtao Sun Dan Tian Chao Sun Lianfa Institute of Crop Resources Heilongjiang Academy of Agricultural SciencesHarbin 150086China College of Art and Design Harbin Institute of Information EngineeringHarbin 150431China

In order to determine the physiological mechanism of drought resistance of northern wheat in China,six drought resistant wheat and one sensitivity to drought wheat were planted in *** were subjected to drought treatment and normal water when the plants grew to the 3-leaf *** were collected at 10,20,30,and 40 days after the drought treatment,*** electrical conductivity,photosynthetic parameters,chlorophyll fluorescence parameters,sugar content,proline content,protein content,and active oxygen scavenging enzyme activity of the plants were detected,and the agronomic traits of the wheat varieties were investigated at *** results indicated that the phenotype and yield-related factors of Darkhan 144 changed little under the drought *** relative electrical conductivity of Kefeng 6 and Darkhan 166 was lower under the drought stress,and their cell membrane was less *** Darkhan 144 and Darkhan 166 had higher drought resistance coefficients,and were the wheat varieties with stronger drought ***,the physiological mechanisms of drought resistance of these three wheat were different:Darkhan 144 maintained a higher photosynthetic activity under the drought stress;Darkhan 166 maintained a higher protein content,photosynthetic activity and active oxygen scavenging enzyme *** addition,other drought-resistant varieties Kefeng 6,Kefeng 10 and Longmai 26 had a higher content of osmoregulatory substances under the drought stress.

关键词： wheat tolerance drought physiological mechanism

Saline-Alkali Tolerance in Rice: physiological Response, Molecular mechanism, and QTL Identification and Application to Breeding

在线全文

学校读者我要写书评

暂无评论

Rice science 2022年第5期29卷 412-434页

作者： Ratan Kumar GANAPATI Shahzad Amir NAVEED Sundus ZAFAR WANG Wensheng XU Jianlong Institute of Crop Sciences National Key Facility for Crop Gene Resources and Genetic ImprovementChinese Academy of Agricultural SciencesBeijing 100081China Shenzhen Branch Guangdong Laboratory for Lingnan Modern AgricultureAgricultural Genomics Institute at ShenzhenChinese Academy of Agricultural SciencesShenzhen 518120China

Salinity-alkalinity is incipient abiotic stress that impairs plant growth and ***(Oryza sativa)is a major food crop greatly affected by soil salinity and alkalinity,requiring tolerant varieties in the saline-alkali prone *** the molecular and physiological mechanisms of saline-alkali tolerance paves the base for improving saline-alkali tolerance in rice and leads to progress in *** review illustrated the physiological consequences,and molecular mechanisms especially signaling and function of regulating genes for saline-alkali tolerance in rice *** also discussed QTLs regarding saline-alkali tolerance accordingly and ways of deployment for *** efforts are needed to identify and utilize the identified QTLs for saline-alkali tolerance in rice.

关键词： saline-alkali tolerance physiological mechanism molecular mechanism marker-assisted backcrossing rice

Exogenous Melatonin Improves physiological Characteristics and Promotes Growth of Strawberry Seedlings Under Cadmium Stress

在线全文

学校读者我要写书评

暂无评论

Horticultural Plant Journal 2021年第1期7卷 13-22页

作者： Shuqing Wu Yao Wang Junkang Zhang Xiaojun Gong Zhen Zhang Jingjing Sun Xuesen Chen Yanling Wang College of Forestry Shandong Agricultural UniversityTai’anShandong 271000China Key Laboratory of Crop Biology College of Horticulture Science and EngineeringShandong Agricultural UniversityTai’anShandong 271000China

Melatonin,as a plant growth regulator,is involved in plant stress *** studied the effects of different concentrations(0,10,50,100,150,and 200μmol·L−1)of melatonin on the growth and physiological characteristics of strawberry under cadmium(Cd)*** results represented that the growth of strawberry seedlings was inhibited under Cd stress,and the seedling biomass,chlorophyll content and the activities of antioxidant enzymes such as superoxide dismutase(SOD),peroxidase(POD),catalase(CAT),and ascorbate peroxidase(APX)*** toxic effects were,however,effectively remediated by exogenous melatonin *** treatment slowed the inhibitory effect of seedling growth and significantly increased seedling biomass,chlorophyll content,antioxidant enzyme activities,and soluble protein levels in leaves and roots compared with the *** treatment also reduced the malondialdehyde(MDA)content and the oxidative stress reactions,increased the anthocyanin content,and slowed the senescence rate,thereby reducing the toxic effects of Cd on *** indicates that foliar application of melatonin can effectively remediate the adverse effects of Cd on strawberry seedlings;the greatest effect was obtained with melatonin concentration of 100μmol·L−1.

关键词： melatonin physiological mechanism antioxidant enzyme anthocyanin Fragaria×ananassa

Causes of Poor Grain Plumpness of Two-Line Hybrids and Their Relationships to the Contents of Hormones in the Rice Grain

在线全文

学校读者我要写书评

暂无评论

Agricultural Sciences in China 2007年第8期6卷 930-940页

作者： ZHAO Bu-hong ZHANG Hong-xi ZHU Qing-sen YANG Jian-chang Key Laboratory of Crop Genetics and Physiology of Jiangsu Province Yangzhou University Yangzhou 225009 P.R. China Lixiahe Region Agricultural Research Institute of Jiangsu Province Yangzhou 225007 P.R.China

This study was designed to elucidate the grain filling characteristics and the causes of poor grain plumpness of some two-line hybrid rice combinations and their hormonal mechanism. Six varieties, including three two-line hybrid rice combinations, that show differences in seed-setting and grain filling, were used. And the contents of starch, sucrose, zeatin （Z）＋ zeatin riboside （ZR）, indole-3-acetic acid （IAA）, and abscisic acid （ABA）, the ethylene evolution rate, activities of sucrose synthase （SuSase） and starch synthase （StSase） in grains, the seed-setting and grain filling rate were investigated. The correlations amongst these were analyzed. The results showed that the poor grain filling of two-line hybrids was mainly attributed to the higher unfilled grain rate and the lower filling degree of inferior grains. During the early and mid grain filling periods, the sucrose content in inferior grains was greater than that in superior grains for the combinations with poor grain filling, indicating that the substrate concentration was not the principal factor for their slow grain filling and poor grain plumpness of the inferior grains of two-line hybrids. Z ＋ ZR, IAA, and ABA in superior grains were obviously greater than those in inferior grains at early grain filling stage. The maximum and mean contents of Z ＋ ZR, IAA, and ABA were positively very significantly correlated with the maximum and mean grain-filling rate, filling degree, and grain weight. The evolution rate of ethylene was greater in inferior grains than in superior grains and greater for the combinations with poor grain plumpness than those with good grain plumpness at the early or mid filling stages. The evolution rate of ethylene was negatively and significantly correlated with the grain filling rate, the grain filling degree, and the grain weight. Spraying ethephon （ethylene-releasing agent） at the early grain filling stage increased the evolution rate of ethylene, reduced the ABA content and activit

关键词： two-line hybrid rice grain-filling hormonal regulation physiological mechanism

physiological Basis of Photosynthetic Function and Senescence of Rice Leaves as Regulated by Controlled-Release Nitrogen Fertilizer

在线全文

学校读者我要写书评

暂无评论

Rice science 2005年第4期12卷 275-282页

作者： NIE Jun ZHENG Sheng-xian DAI Ping-an XIAO Jian YI Guo-ying Soil and Fertilizer Institute of Hunan Changsha 410125 China

The physiological mechanism of photosynthetic function and senescence of rice leaves was studied by using early rice variety Baliangyou 100 and late rice variety Weiyou 46, treated with controlled-release nitrogen fertilizer （CRNF）, urea and no nitrogen fertilizer. CRNF showed obvious effects on delaying the senescence and prolonging photosynthetic function duration of rice leaves. Compared with urea, CRNF could significantly increase the chlorophyll content of functional leaves in both early and late rice varieties, and this difference between the treatments became larger as rice growth progressed; CRNF increased the activities of active oxygen scavenging enzymes super oxide dismutase （SOD） and peroxidase （POD）, and decreased the accumulation amount of malondialdehyde （MDA） in functional leaves during leaf aging; Photosynthetic rate of functional leaves in CRNF treatment was significantly higher than that in urea treatment. The result also indicated that CRNF could effectively regulate the contents of indole-3-acetic acid （IAA） and abscisic acid （ABA） in functional leaves; IAA content was higher and ABA content was lower in CRNF treatment than those in urea treatment. Therefore, application of CRNF could increase the rice yield significantly due to these physiological changes in the functional leaves.

关键词： controlled-release nitrogen fertilizer rice photosynthetic function senescence physiological mechanism

Formation of Assimilating Surface Areas and Photosynthetic Potential of Various Assimilating Parts of Wheat Species under Drought Conditions

在线全文

学校读者我要写书评

暂无评论

American Journal of Plant Sciences 2016年第6期7卷 824-827页

作者： Tamraz H. Tamrazov Javanshir M. Talai Atif A. Zamanov Azerbaijan Scientific-Research Husbandry Institute Baku Azerbaijan

Some of environmental factors (weather sharp fluctuations) may accrue stress within a few minutes, while others may not be long for this period of stress in this situation. It has formed stress in organisms, to eliminate the stress, there starts over various biochemical and physiological mechanisms for protection. Therefore, a large variety of plants to examine ways of increasing the resistance against stress factors have a scientific and practical importance. Thus, the primary processes of photosynthesis, based on the results of the study and its corresponding morphophysiological higher photochemical activity, has been found in a range of genotypes. Their leaves and plants assimilate the biological productivity of the intensity of the symptoms associated with the use of photosynthetic learned of the opportunity to create a new perspective varieties. This allows the research to prove the expansion of the electronic delivery of high-yielding genotypes and phosphorised chloroplast high speed, as well as the pH of thylacoid membranes are characterized by a great price, also photosynthetic electron transport, CO2 assimilation and it was approved to be the link between productivity.

关键词： Assimilating Parts Drought Conditions Wheat Productivity Bread Wheat physiological mechanism

低温胁迫对嫁接西瓜幼苗耐冷性和生理生化指标的影响

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

低温胁迫对嫁接西瓜幼苗耐冷性和生理生化指标的影响