检索结果-南通市图书馆

Rice science 2007年第2期14卷 141-148页

作者： DONG Ming-hui SANG Da-zhi WANG Peng WANG Xue-ming YANG Jian-chang Key Laboratory of crop Genetics and Physiology Jiangsu Province Yangzhou University Yangzhou 225009 China

Cooking and nutrition qualities of grain are two of the most important aspects of rice quality. To understand the difference in cooking and nutrition qualities among the grains at different positions within a rice panicle, the distributions of gel consistency （GC）, amylose content （AC） and crude protein content （CPC） of grains in a panicle in association with different nitrogen levels （0, 120 and 240 k c/ha） were investigated by using two rice varieties, Yangdao 6 （indica） and Wuyujing 3 （japonica）. In general, the grains at the basal part of a panicle had lower GC and higher AC than those at the upper or middle part of a panicle. The 1^st grain on the secondary branch with earlier flowering exhibited the highest GC, whereas the 2nd grain on the primary branch with later flowering showed the highest AC. For Yangdao 6, CPC in the grains on the primary branches was lower at the middle part of a panicle than at the upper or basal part of a panicle. For Wuyujing 3, there were no significant differences in CPCs in the grains among the upper, middle and basal parts of a panicle. GC in the grains was increased, whereas AC was reduced from zero nitrogen application （ON） to low amount of nitrogen application （LN）, and the result was reversed from LN to medium amount of nitrogen application （MN）. CPC was increased with the increase in the amount of nitrogen application.

关键词： rice grain position cooking quality nutrition quality nitrogen

Analysis of the Volatile Components in Flowers of Paeonia lactifloraPall. and Paeonia lactifloraPall. var. Trichocarpa

在线全文

学校读者我要写书评

暂无评论

American Journal of Plant Sciences 2021年第1期12卷 146-162页

作者： Tonglin Wang Anqi Xie Dongliang Zhang Zemiao Liu Xue Li Yang Li Xia Sun State Key Laboratory of crop Biology College of Horticulture Shandong Agricultural University Tai’an China

Paeonia lactiflora Pall. var. trichocarpa is a variety of Paeonia lactiflora Pall., and is currently the peony herb’s principal cultivar group. Here, we study the differences in aromatic components and flowers of different varieties between two groups of cultivars, providing a reference for applying natural fragrance substances of peonies, breeding fragrant flower types, and developing and using improved varieties. Headspace solid-phase microextraction (HS-SPME), gas chromatography-mass spectrometry (GC-MS), peak area normalization for each component relative to content, component library (NIST14/NIST14S) retrieval, and a literature review were used to analyze the volatile compounds in flowers of eight peony varieties, such as “Gaoganhong”, and ten comospore peony varieties, such as “Jinshanhong”. Results showed that the main volatile compound constituents in flowers of the two groups were terpenes and alcohols. Additionally, the content of eucalyptol, caryophyllene, α-Pinene, citronellol, and 3-Hexen-1-ol, acetate, (Z) was high. Peony cultivars contained linalool,

关键词： Paeonia lactiflora Pall. Paeonia lactiflora Pall. var. Trichocarpa GC-MS Volatile Components

Duplication and sub-functionalization of flavonoid biosynthesis genes plays important role in Leguminosae root nodule symbiosis evolution

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 Integrative Plant Biology 2024年第10期66卷 2191-2207页

作者： Tengfei Liu Haiyue Liu Wenfei Xian Zhi Liu Yaqin Yuan Jingwei Fan Shuaiying Xiang Xia Yang Yucheng Liu Shulin Liu Min Zhang Yanting Shen Yuannian Jiao Shifeng Cheng Jeff J.Doyle Fang Xie Jiayang Li Zhixi Tian Key Laboratory of Seed Innovation Institute of Genetics and Developmental BiologyChinese Academy of SciencesBeijing 100101China University of Chinese Academy of Sciences Beijing 100049China Key Laboratory of Plant Carbon Capture CAS Center for Excellence in Molecular Plant SciencesShanghai Institute of Plant Physiology and EcologyChinese Academy of SciencesShanghai 200032China Shenzhen Branch Guangdong Laboratory for Lingnan Modern AgricultureGenome Analysis Laboratory of the Ministry of AgricultureAgricultural Genomics Institute at ShenzhenChinese Academy of Agricultural SciencesShenzhen 518124China Department of Molecular Biology Max Planck Institute for Biology TübingenTübingen 72076Germany Hebei Key Laboratory of crop Genetics and Breeding Institute of Cereal and Oil CropsHebei Academy of Agricultural and Forestry SciencesShi-jiazhuang 050035China State Key Laboratory of Plant Diversity and Specialty crops Institute of BotanyThe Chinese Academy of SciencesBeijing 100093China School of Integrative Plant Science Sections of Plant Biology and Plant Breeding&GeneticsCornell UniversityIthacaNew York 14853USA State Key Laboratory of Plant Genomics and National Center for Plant Gene Research Institute of Genetics and Developmental BiologyChinese Academy of SciencesBeijing 100101China Yazhouwan National Laboratory Sanya 572024China

Gene innovation plays an essential role in trait *** symbioses,the most important N2-fixing agent in agricultural systems that exists mainly in Leguminosae,is one of the most attractive evolution ***,the gene innovations underlying Leguminosae root nodule symbiosis(RNS)remain largely ***,we investigated the gene gain event in Leguminosae RNS evolution through comprehensive phylogenomic *** revealed that Leguminosae-gain genes were acquired by gene duplication and underwent a strong purifying *** Encyclopedia of Genes and Genomes analyses showed that the innovated genes were enriched in flavonoid biosynthesis pathways,particular downstream of chalcone synthase(CHS).Among them,Leguminosae-gain typeⅡchalcone isomerase(CHI)could be further divided into CHI1A and CHI1B clades,which resulted from the products of tandem ***,the duplicated CHI genes exhibited exon–intron structural divergences evolved through exon/intron gain/loss and insertion/*** down CHI1B significantly reduced nodulation in Glycine max(soybean)and Medicago truncatula;whereas,knocking down its duplication gene CHI1A had no effect on ***,Leguminosae-gain typeⅡCHI participated in RNS and the duplicated CHI1A and CHI1B genes exhibited RNS functional *** study provides functional insights into Leguminosae-gain genetic innovation and sub-functionalization after gene duplication that contribute to the evolution and adaptation of RNS in Leguminosae.

关键词： CHI1 duplication gene gain Leguminosae root nodule symbiosis evolution sub-functionalization

Genetic Diversity Evaluation of Maize Recurrent Selection Population with RAPD Marker

在线全文

学校读者我要写书评

暂无评论

Agricultural Sciences in China 2000年第1期 17-23页

作者： Liu Xunjia National Key Lab of crop Genetic Improvemnt Huazhong Agricultural University Wuhan 430070

The genetic diversity of maize populations Wuxi (W) from Southwest China, BSSS9(B) from America, Mohuangjiu (M) from Mexico, WBMC0 synthesized by W, B, M as main parents,WBMC1 one cycle selected from WBMC0 were evaluated by RAPD molecular marker. The results showed that :(1) Totally 89 fragments (loci) were amplified by 15 10-mar random primers, the proportion of polymorphic loci were W 76. 4%, B 75. 3%, M 79. 8%,WBMC0 85. 4% and WBMC1 92. 1% respectively; (2) The mean gene heterozygosity based on 89 loci was W 0. 285, B 0. 252, M 0. 296, WBMC0 0. 327 and WBMC1 0. 346; (3) The mean genetic distance based on 89 loci were W 0. 2533, B 0. 2246, M 0. 2481, WBMC0 0. 3006 and WBMC1 0. 3119; (4) The genotypic mean numbers amplified by 15 primers were W 9.1, B 7.8, M 8.5, WBMC0 10. 1 and WBMC1 10. All indexes indicated that the synthesized maize population were more polymorphic than the parent populations in DNA level. One cycle selection did not reduce the variation. The new conception of 'genotypic diversity' (the number of genotypes in a population) was provided to describe the genetic diversity for any population being equilibrium or unequilibrium in genetics. The principle and technical system were discussed for evaluating genetic variation of recurrent selection population using RAPD molecular marker.

关键词： Maize Genetic diversity RAPD evaluation

Developing Situations of Tea Plucking Machine

维普期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Engineering（科研） 2014年第6期6卷 268-273页

作者： Yu Han Hongru Xiao Guangming Qin Zhiyu Song Wenqin Ding Song Mei Graduate School Chinese Academy of Agricultural Science Beijing China Production Machinery Engineering and Technology Research Center of Special Economic crop Nanjing Research Institute for Agricultural Mechanization Ministry of Agriculture Nanjing China

To acquire the developing trend and ways of mechanization of tea plucking, with analyzing the developing backgrounds and situations of tea plucking machine both at home and abroad, this paper obtains the conclusion that there are several countries that have conducted a lot of studies on tea plucking machine, such as Japan, England, France, India, Australia and Argentina. Among others, Japan goes ahead, where lots of researches have been conducted in the highest developing level. The article also analyses the reason why China has a poor mechanization of tea plucking and points out existing problems. Finally, some advices and measures for developing Chinese domestic mechanization of tea plucking are given.

关键词： Tea Plucking Machine Development New Techniques Suggestion

MdDREB2A in apple is involved in the regulation of multiple abiotic stress responses

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

Horticultural Plant Journal 2021年第3期7卷 197-208页

作者： Xinyu Lian Xinyu Zhao Qiang Zhao Guiluan Wang Yuanyuan Li Yujin Hao State Key Laboratory of crop Biology Shandong Collaborative Innovation Center of Fruit&Vegetable Quality and Efficient ProductionCollege of Horticulture Science and EngineeringShandong Agricultural UniversityTai’anShandong 271018China College of Horticulture Qingdao Agricultural UniversityQingdaoShandong 266109China

Abiotic stress has a serious effect on plant *** transcription factor DREB2A is a member of the AP2/ERF family,which is widely involved in abiotic stress ***,the function of apple MdDREB2A has not been systematically *** this study,MdDREB2A was isolated from the cultivar‘Royal Gala’.The open reading frame of MdDREB2A was 1197 bp in length and it encoded a protein of 398 amino acidswithmolecularweight of 43.8 *** a transcription factor,MdDREB2Awas located in the ***-PCR analysis showed that MdDREB2A was involved in responses to drought,salt,and ABA *** these stress treatments,the relative electrical conductivity,superoxide anion and malondialdehyde(MDA)in transgenic materials significantly decreased,and the content of proline increased in MdDREB2A transgenic plants,compared to the controls,indicating that MdDREB2A transgenic apple calli and transgenic Arabidopsis exhibited improved resistance to abiotic *** study introduces a candidate gene for the genetic improvement of crop resistance and reveals important function of MdDREB2A in the regulation of abiotic stress response.

关键词： Apple MdDREB2A Function Abiotic stress

Expression analysis of abscisic acid(ABA) and metabolic signalling factors in developing endosperm and embryo of barley

在线全文

学校读者我要写书评

暂无评论

Expression analysis of abscisic acid(ABA) and metabolic sign...

Distinct roles of alternative oxidase pathway during the greening process of etiolated algae

2013全国植物生物学大会

作者： CHEN Zhiwei HUANG Jianhua Nira MUTTUCUMARU Stephen J.POWERS Nigel G.HALFORD Biotechnology Research institute Shanghai Academy of Agricultural Sciences Plant Biology and crop Science Department Rothamsted Research Computational and Systems Biology Department Rothamsted Research

The expression of genes encoding components of the ABA and metabolic signalling pathway in developing barley endosperm and embryo was *** genes included HvRCAR3547387 and HvRCAR352538(e

关键词： Hordeum vulgare L. abscisic acid(ABA) seed development signalling

来源： cnki会议 cnki会议评论

在线全文

学校读者我要写书评

暂无评论

Science China(Life Sciences) 2021年第5期64卷 816-827页

作者： Ying Liu Hua Zhang Yan Cui Yanli Zheng Hui Chen Zhangli Hu Qingyu Wu College of Life Sciences and Oceanography Shenzhen UniversityShenzhen 518055China Shenzhen Academy of Environmental Science Shenzhen 518001China Gansu Innovation Center of Microalgae Technology Hexi UniversityZhangye 734000China Key Laboratory of Algal Biology Institute of HydrobiologyChinese Academy of SciencesWuhan 430072China University of the Chinese Academy of Sciences Beijing 100039China State Key Laboratory of crop Stress Adaptation and Improvement School of Life SciencesHenan UniversityKaifeng 475004China

The vital function of mitochondrial alternative oxidase(AOX) pathway in optimizing photosynthesis during plant de-etiolation has been well recognized. However, whether and how AOX impacts the chloroplast biogenesis in algal cells remains unclear. In the present study, the role of AOX in regulating the reassembly of chloroplast in algal cells was investigated by treating Auxenochlorella protothecoides with salicylhydroxamic acid(SHAM), the specific inhibitor to AOX, in the heterotrophy to autotrophy transition process. Several lines of evidences including delayed chlorophyll accumulation, lagged reorganization of chloroplast structure, altered PSI/PSII stoichiometry, and declined photosynthetic activities in SHAM treated cells indicated that the impairment in AOX activity dramatically hindered the development of functioning chloroplast in algal cells. Besides, the cellular ROS levels and activities of antioxidant enzymes were increased by SHAM treatment, and the perturbation on the balance of NAD+/NADH and NADP+/NADPH ratios was also observed in A. protothecoides lacking AOX activity, indicating that AOX was essential in promoting ROS scavenging and keeping the redox homeostasis for algal chloroplast development during greening. Overall, our study revealed the essentiality of mitochondrial AOX pathway in sustaining algal photosynthetic performance and provided novel insights into the physiological roles of AOX on the biogenesis of photosynthetic organelle in algae.

关键词： alternative oxidase pathway chloroplast reconstruction greening microalgae reactive oxygen species redox

Genetic Analysis of the Resistance to Aspergillus flavus Infection in Maize (Zea mays L.)

在线全文

学校读者我要写书评

暂无评论

Agricultural Sciences in China 2009年第6期8卷 761-765页

作者： DENG De-xiang JIANG Si-xia WANG Yi-jun BIAN Yun-long CHEN Jian-jian JIA Bo Jiangsu Province Key Laboratory of crop Genetics and Physiology~Key Laboratory of Plant Functional Genomics Ministry of Education Yangzhou University Yangzhou 225009 P.R. China Yangzhou Environment and Resources Technical College Yangzhou 225009 P.R. China

Maize （Zea mays L.）, one of main crops in the world, is easily susceptible to Aspergillusflavus （Link： fr） infection, resulting huge loses worldwide. Breeding for A. flavus resistance has been proved an efficient way to solve the problem of aflatoxin contamination. Genetic analysis of the sources of resistance to *** in maize is necessary for this purpose. The complete diallel crosses of 6 inbred lines with different resistance to *** infection were implemented. Inoculation categorical data of each cross were analyzed with the additive-dominant and additive-dominant-epitasis genetic models. Results indicated some crosses fitted the 2 major genes with additive-dominant-epitasis genetic model. Others fitted the major gene and polygene mixed model. Moreover, the additive, dominant, and epitasis effects varied in crosses. The *** resistance was controlled by both major gene and polygene.

关键词： maize Aspergillus flavus resistance genetic model

Integrated management strategy for improving the grain yield and nitrogen-use efficiency of winter wheat

在线全文

学校读者我要写书评

暂无评论

Integrated management strategy for improving the grain yield...