检索结果-南通市图书馆

Assessment of Castor Plant (Ricinus communis L.) Tolerance to Heavy Metal Stress-A Review

在线全文

学校读者我要写书评

暂无评论

Phyton-International Journal of Experimental Botany 2020年第3期89卷 453-472页

作者： Akwasi Yeboah Jiannong Lu Ting Yang Yuzhen Shi Hanna Amoanimaa-Dede Kwadwo Gyapong Agyenim Boateng Xuegui Yin Department of crop breeding and Genetics College of Agricultural SciencesGuangdong Ocean UniversityZhanjiang524088China The National Engineering Laboratory for crop Molecular breeding MARA Key Laboratory of Soybean Biology(Beijing)Institute of Crop SciencesChinese Academy of Agricultural SciencesBeijing100081China

Increased urbanization and industrialization have greatly contributed to the emission of higher amount of heavy metals such as cadmium,nickel,and lead into the *** metals are non-biodegradable and toxic,causing much effects on plants and by extension to animals and humans,which have become a major global *** inherent ability of plants to resist heavy metal toxicity seems to be the most sustainable and cost-effective *** plant is widely studied due to its tolerance to the effects of heavy metal contaminated soils,owing to its large biomass content and high accumulating *** plants to some extent can tolerate elevated levels of heavy metals through several developed mechanisms,such as activation of antioxidant enzymes,exclusion,accumulation of proline,compartmentalization,organic acid exudation,and *** studies have identified some stress-responsive to aid the tolerance of heavy metals in *** caused by heavy metal toxicity affects seedling growth,biomass,photosynthetic pigments,protein level,and nutrient uptake of castor *** response of castor,however,to these stresses differs among cultivars,metal type and concentration,and time of metal *** review aims to summarize the physiological responses and various defense mechanisms of castor to tolerate and eradicate heavy metal toxicity and some stress-responsive genes identified at transcriptional and posttranscriptional levels that confer metal tolerance in this plant.

关键词： Castor metal stress biomass proline tolerance

Moderate drought alleviates the damage to grain quality at high temperatures by improving the starch synthesis of inferior grains in japonica rice

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 Agriculture 2022年第10期21卷 3094-3101页

作者： TONG Hui DUAN Hua WANG Sheng-jun SU Jing-ping SUN Yue LIU Yan-qing TANG Liang LIU Xue-jun CHEN Wen-fu Rice Research institute Shenyang Agricultural UniversityShenyang 110866P.R.China Tianjin Key Laboratory of crop Genetics and breeding Tianjin Crop Research InstituteTianjin 300384P.R.China

In agricultural production,temperature and moisture are important factors affecting grain yield and *** moderate drought at the grain-filling stage can effectively alleviate the damage caused by high temperature,the specific regulatory mechanism driving the effect of moderate drought at the high temperature on starch synthesis is still *** explore the effects and mechanisms of high temperature and moderate drought on rice starch synthesis at the grainfilling stage,the activities of enzymes and expression levels of the genes involved in starch synthesis under four different treatments involving high temperature and/or water stress(CK,HT,WS,and HT+WS)were investigated in this *** starch synthesis of a japonica inbred rice was measured under the four treatments during the grain *** results show that the effects of high temperature and moderate drought on grain filling mainly occur in the inferior grains of *** the regulation of enzymes involved in starch synthesis and the expression levels of their main genes,the synthesis of rice starch can be ***,the high temperature and moderate drought were antagonistic,and moderate drought can alleviate the damage to grain quality at a high temperature by improving the starch synthesis of inferior grains in japonica *** study provides a basis for stress-resistance cultivation and breeding strategies of rice with high temperature tolerance.

关键词： high temperature moderate drought antagonism starch synthesis japonica rice

Analysis of simple sequence repeats in rice bean(Vigna umbellata) using an SSR-enriched library

在线全文

学校读者我要写书评

暂无评论

The crop Journal 2016年第1期4卷 40-47页

作者： Lixia Wang Kyung Do Kim Dongying Gao Honglin Chen Suhua Wang Suk Ha Lee Scott A. Jackson Xuzhen Cheng institute of crop Science Chinese Academy of Agricultural Sciences Center for Applied Genetic Technologies University of Georgia Plant Genomics and breeding institute Seoul National University

Rice bean(Vigna umbellata Thunb.), a warm-season annual legume, is grown in Asia mainly for dried grain or fodder and plays an important role in human and animal nutrition because the grains are rich in protein and some essential fatty acids and minerals. With the aim of expediting the genetic improvement of rice bean, we initiated a project to develop genomic resources and tools for molecular breeding in this little-known but important *** we report the construction of an SSR-enriched genomic library from DNA extracted from pooled young leaf tissues of 22 rice bean genotypes and developing SSR *** 433,562 reads generated by a Roche 454 GS-FLX sequencer, we identified 261,458 SSRs, of which 48.8% were of compound form. Dinucleotide repeats were predominant with an absolute proportion of 81.6%, followed by trinucleotides(17.8%). Other types together accounted for 0.6%. The motif AC/GT accounted for 77.7% of the total, followed by AAG/CTT(14.3%), and all others accounted for 12.0%. Among the flanking sequences, 2928 matched putative genes or gene models in the protein database of Arabidopsis thaliana, corresponding with 608 non-redundant Gene Ontology terms. Of these sequences, 11.2% were involved in cellular components, 24.2% were involved molecular functions, and 64.6% were associated with biological processes. Based on homolog analysis, 1595 flanking sequences were similar to mung bean and 500 to common bean genomic sequences. Comparative mapping was conducted using 350 sequences homologous to both mung bean and common bean sequences. Finally, a set of primer pairs were designed, and a validation test showed that58 of 220 new primers can be used in rice bean and 53 can be transferred to mung ***, only 11 were polymorphic when tested on 32 rice bean varieties. We propose that this study lays the groundwork for developing novel SSR markers and will enhance the mapping of qualitative and quantitative traits and marker-assisted selection in rice b

关键词： Vigna umbellata SSR Distribution and frequency Mapping Primer design

Conditional QTL mapping of three yield components in common wheat(Triticum aestivum L.)

在线全文

学校读者我要写书评

暂无评论

The crop Journal 2016年第3期4卷 220-228页

作者： Han Zhang Jiansheng Chen Ruyu Li Zhiying Deng Kunpu Zhang Bin Liu Jichun Tian State Key Laboratory of crop Biology Ministry of Science and Technology/Key Laboratory of Crop Biology of Shandong ProvinceDepartment of Agronomy/Group of Wheat Quality BreedingShandong Agricultural University crop Research institute Shandong Academy of Agricultural Sciences

Spike number per m^2(SN),kernel number per spike(KNPS) and thousand-kernel weight(TKW)are the three main components determining wheat(Triticum aestivum L.) *** evaluate the relationships among them a doubled haploid(DH) population consisting of 168 lines grown at three locations for three years was analyzed by unconditional and conditional QTL ***-three unconditional QTL and fifty-nine conditional QTL were *** them,two QTL(QSN-DH-2B and QSN-DH-3A-1.1) improved SN,with no effect on ***-DH-2B-2.1 improved KNPS,with no effect on ***-DH-1A-1.1,QKNPS-DH-2D-1.1and QKNPS-DH-6A improved KNPS,with no effect on SN or ***-DH-6B was associated with increased SN and *** addition,QTKW-DH-4B,QTKW-DH-5B and QTKW-DH-7B increased TKW without decreasing *** results provide useful information for marker assisted selection(MAS) and improvement in wheat yield.

关键词： Kernel number per spike QTL mapping Spike number per m^2 Thousand-kernel weight

QTL analysis of the developmental changes in cell wall components and forage digestibility in maize(Zea mays L.)

在线全文

学校读者我要写书评

暂无评论

Journal of Integrative Agriculture 2022年第12期21卷 3501-3513页

作者： LI Kun YANG Xue LIU Xiao-gang HU Xiao-jiao WU Yu-jin WANG Qi MA Fei-qian LI Shu-qiang WANG Hong-wu LIU Zhi-fang HUANG Chang-ling institute of crop Sciences Chinese Academy of Agricultural SciencesBeijing 100081P.R.China National Engineering Laboratory for crop Molecular breeding Beijing 10081P.R.China

Cell wall architecture plays a key role in stalk strength and forage ***,cellulose,and hemicellulose are the three main components of plant cell walls,and they can impact stalk quality by affecting the structure and strength of the cell *** explore cell wall development during secondary cell wall lignification in maize stalks,conventional and conditional genetic mapping were used to identify the dynamic quantitative trait loci(QTLs)of the cell wall components and digestibility traits during five growth stages after *** detergent lignin(ADL),cellulose(CEL),acid detergent fiber(ADF),neutral detergent fiber(NDF),and in vitro dry matter digestibility(IVDMD)were evaluated in a maize recombinant inbred line(RIL)***,CEL,ADF,and NDF gradually increased from 10 to 40 days after silking(DAS),and then they *** initially decreased until 40 DAS,and then it increased *** QTLs were identified for the five traits,and each accounted for 3.48–24.04%of the phenotypic *** QTL hotspots were found,and they were localized in the 1.08,2.04,2.07,7.03,8.05,and 9.03 bins of the maize *** the interval of the pleiotropic QTL identified in bin 1.08 of the maize genome,six genes associated with cell wall component biosynthesis were identified as potential candidate genes for stalk strength as well as cell wall-related *** addition,26 conditional QTLs were detected in the five stages for all of the investigated ***-two of the 26 conditional QTLs were found at 30 DAS conditioned using the values of 20 DAS,and at 50 DAS conditioned using the values of 40 *** results indicated that cell wall-related traits are regulated by many genes,which are specifically expressed at different stages after *** improvements in both forage digestibility and lodging resistance could be achieved by pyramiding multiple beneficial QTL alleles identified in this study.

关键词： quantitative trait loci maize(Zea mays L.) cell wall components forage quality

Heritability and Variability of Quality Parameters of Tomatoes in Outdoor Production

在线全文

学校读者我要写书评

暂无评论

Research 2020年第1期2020卷 1099-1107页

作者： Christian Zorb Hans-Peter Piepho Sabine Zikeli Bernd Horneburg University of Hohenheim Institute of Crop Science70593 StuttgartGermany University of Kassel Section of Organic Plant Breeding and Agrobiodiversity27213 WitzenhausenGermany

The tomato is the most important vegetable *** England,outdoor tomatoes are widely grown by amateur gardeners,with the number of their allotment plots exceeding *** instance,in Germany,only about 16%of tomato plants are cultivated according to organic standards,although these rates are expected to *** for yield and fruit quality can increase resource ***,we need to evaluate the variability of yield and fruit quality parameters,to calculate the heritability of these traits and to identify superior genotypes for organic outdoor tomato production and *** these aims,we grew 24 tomato genotypes of diverse origins in a two-year field *** heritability of quality traits such as glucose,fructose,organic acid,and lycopene was *** medium heritability for yield suggests that trials with a larger number of locations are needed for the reliable selection of this *** correlations of sugar concentrations with fruit weight and of organic acid concentration with fruit weight and yield suggest trade-offs in breeding for larger fruits and higher *** for increased lycopene content is not subject to these challenges;the concentrations of the primary metabolite sugars and organic acids are positively correlated.

关键词： breeding sugar exceeding

Low Light During Grain Filling Stage Deteriorates Rice Cooking Quality, but not Nutritional Value

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

Rice science 2015年第4期22卷 197-206页

作者： LIANG Cheng-gang LIu Jia WANG Yan XIONG Dan DINO Chun-bang LI Tian Key Laboratory of crop Physiology Ecology and cultivation in Southwest Ministry of Agriculture Sichuan Agricultural University Chengdu 611130 China Key Laboratory of crop Germplasm Resources and Gene Improvement Ministry of Education Sichuan Agricultural University Chengdu 611130 China Research Center of Buckwheat Industry Technology Institute of Plant Genetics and Breeding School of Life Sciences Guizhou Normal University Guiyang 550001 China

To investigate the effect of low light （LL, 50% natural light） during grain filling （GF） stage on rice transamination, amino acid （AA） accumulation, nutritional value, and cooking quality in three different rice genotypes, transaminase activities and AA levels in grains during GF stage and the traits that significantly affected rice quality （physical appearance, cooking quality, and nutritional value） were analyzed. LL did not disturb transamination in rice grains during GF stage, as minimal impact was found on alanine and aspartate transaminase activities. Nevertheless, most AAs in caryopses, including lysine and threonine, increased in response to LL, except for sulfur-containing AAs. These results suggest that AA metabolism and accumulation in rice grains were rarely suppressed by LL during GF stage. Rice nutritional ingredients at harvest, such as major protein components including glutelin and most important essential amino acids （EAAs） including lysine and threonine, increased significantly in response to LL, whereas most protein and EAA ratios were rarely affected. However, LL markedly affected physical appearance of rice grains by reducing brown rice rate, milled rice rate, and 1000-grain weight and increasing the chalkiness rate. In addition, cooking qualities decreased in response to LL, while breakdown values and amylose levels decreased and setback values increased. We concluded that LL during GF stage decreased the cooking quality of rice, but could potentially improve the nutritional value of rice.

关键词： cooking quality essential amino acid low light nutritional value protein rapid visco-analyzer value rice

Identification of QTL for adult plant resistance to stripe rust in bread wheat line C33

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 Agriculture 2020年第3期19卷 624-631页

作者： LUO Jiang-tao ZHENG Jian-min WAN Hong-shen YANG Wu-yun LI Shi-zhao PU Zong-jun crop Research institute Sichuan Academy of Agricultural Sciences/Key Laboratory of Biology and Genetic Breeding in Wheat(Southwest)Ministry of Agriculture and Rural Affairs

Stripe rust,caused by Puccinia striiformis ***,is a serious disease in bread wheat(Triticum aestivum L.).Identification and use of adult plant resistance(APR) resources are important for stripe rust resistance *** wheat line C33 is an exotic germplasm that has shown stable APR to stripe rust for more than 10 years in Sichuan Province of ***,183 recombinant inbred lines(RILs) derived from the cross between C33 and a susceptible line X440 were genotyped with diversity arrays technology(DArT) markers to identify resistance quantitative trait locus(QTL).Field trials were conducted in five years at Chengdu and Xindu of Sichuan Province,using maximum disease severity(MDS) as stripe rust reaction phenotypes.A total of four quantitative trait loci(QTLs) were detected,respectively designed as ***-3 AS,***-5 AL,***-5 BL,and ***-7 DS,explaining 4.14-15.21% of the phenotypic ***-5 BL and ***-7 DS were contributed by ***,the level for stripe rust resistance contributed by them was not strong as C33,suggesting the presence of other unidentified QTLs in ***-7 DS corresponded to Yr18 and ***-5 BL remains to be formally *** RIL lines carrying combinations ***-5 AL,***-5 BL,and ***-7 DS showed comparability resistance with *** present study provides resources to pyramid diverse genes into locally adapted elite germplasm to improve the stripe rust resistance of bread wheat.

关键词： APR DArT QTL mapping Triticum aestivum L.

The Machine Recognition for Population Feature of Wheat Images Based on BP Neural Network

在线全文

学校读者我要写书评

暂无评论

Agricultural Sciences in China 2002年第8期1卷 885-889页

作者： LI Shao-kun, SUO Xing-mei, BAI Zhong-ying, QI Zhi-li, Liu Xiao-hong, GAO Shi-ju and ZHAO Shuang-ning( institute of crop breeding and cultivation /Key Laboratory of crop Genetic & breeding, Ministry of Agriculture, ChineseAcademy of Agricultural Sciences, Beijing 100081 , P . R . China Department of Computer Science and Technology, CentralUniversity for Nationalities, Beijing 100081 , P. R . China School of Computer Science and Technology, Beijing Universityof Posts and Telecommunications, Beijing 100876, P. R . China Research Center of Xinjiang crop High-yield,Shihezi University, Shihezi 832003, P.R. China) institute of crop breeding and cultivation/Key Laboratory of crop Genetic (ж) breeding Ministry of Agriculture Chinese Academy of Agricultural Sciences Beijing 100081 P.R.China Research Center of Xinjiang crop High-yield Shihezi University Shihezi 8 Department of Computer Science and Technology Central University for Nationalities Beijing 100081 P. R . China School of Computer Science and Technology Beijing University of Posts and Telecommunications Beijing 100876 P. R . China institute of crop breeding and cultivation/Key Laboratory of crop Genetic (ж) breeding Ministry of Agriculture Chinese Academy of Agricultural Sciences Beijing 100081 P. R . China

Recognition and analysis of dynamic information about population images during wheat growth periods can be taken for the base of quantitative diagnosis for wheat growth. A recognition system based on self-learning BP neural network for feature data of wheat population images, such as total green areas and leaves areas was designed in this paper. In addition, some techniques to create favorable conditions for image recognition was discussed, which were as follows: (1) The method of collecting images by a digital camera and assistant equipment under natural conditions in fields. (2) An algorithm of pixel labeling was used to segment image and extract feature. (3) A high pass filter based on Laplacian was used to strengthen image information. The results showed that the ANN system was availability for image recognition of wheat population feature.

关键词： Wheat Population Leaves areas Image recognition BP neural network