Pakistan Journal of Agricultural Sciences最新文献_第10页

The nutritive value of palm kernel cake and its application in low quality diets of broiler chickens 棕榈仁饼的营养价值及其在肉鸡低质量日粮中的应用

IF 0.8 4区农林科学

Pakistan Journal of Agricultural Sciences Pub Date : 2021-10-01 DOI: 10.21162/pakjas/21.1187

Xiaopeng Tang

{"title":"The nutritive value of palm kernel cake and its application in low quality diets of broiler chickens","authors":"Xiaopeng Tang","doi":"10.21162/pakjas/21.1187","DOIUrl":"https://doi.org/10.21162/pakjas/21.1187","url":null,"abstract":"The aim of this study was to evaluate the nutritive value of palm kernel cake (PKC) and to investigate its effect on growth performance of broiler chickens. Firstly, the dry matter (DM) digestibility, metabolic energy (ME) of PKC was determined. Secondly, a total of seven hundred 18-day-old Sanhuang broilers were randomly divided into 5 treatments with 7 replicates of 20 broilers each. Broilers were received basal diets without (T0 group) or with 2% (T1 group), 4% (T2 group), 6% (T3 group), 8% (T4 group) PKC supplementation throughout the trial period. The experiment lasted for 18 days after a five days prefeeding period. The growth performance [average daily gain (ADG), average daily feed intake (ADFI), and feed to meat ratio (F/G)] were measured. The results showed that the DM, crude protein (CP), crude fiber (CF), crude fat (EE), crude ash, calcium (Ca), phosphorus (Pi) and gross energy (GE) content of PKC was 91.30%, 15.87%, 14.31%, 10.41%, 3.73%, 0.34%, 0.57% and18.28 MJ/kg respectively. There are 17 kinds of amino acid (AA) in PKC, and had a total AA content of 13.26%. The apparent DM digestibility and true DM digestibility of PKC was 24.11% and 28.73%, respectively. The apparent metabolizable energy (AME) and true metabolizable energy (TME) of PKC was 7.73 MJ/kg and 8.41 MJ/kg, respectively. Dietary PKC supplementation had no effects on the final body weight (FBW), ADG, ADFI and F/G of broilers, while, there was a significant linear relationship between PKC and ADFI (y=0.2006x+73.63, R2=0.8358, p=0.0298). The feed cost were decreased with the increased of PKC supplementation, and the relative economic benefit in T2 group (4% PKC), T3 group (6% PKC), T4 group (8% PKC) was decreased by 1.07%, 0.89%, 0.36%, respectively, only the 2% PKC group increased the relative economic benefit by 0.71% compared with control group. In conclusion, the supplementation of PKC up to 8% in low quality diets did not affects the growth performance of broilers, but considering the economic benefit, it is advisable to add 2% PKC in the diet of broilers","PeriodicalId":19885,"journal":{"name":"Pakistan Journal of Agricultural Sciences","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2021-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45960454","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Multivariate analysis of morpho-physiological and grain yield traits in advance lines of bread wheat under different leaf rust disease regimes 不同叶锈病治理下面包小麦先期品系形态生理及产量性状的多变量分析

IF 0.8 4区农林科学

Pakistan Journal of Agricultural Sciences Pub Date : 2021-10-01 DOI: 10.21162/pakjas/21.1445

Muhammad Jabran

{"title":"Multivariate analysis of morpho-physiological and grain yield traits in advance lines of bread wheat under different leaf rust disease regimes","authors":"Muhammad Jabran","doi":"10.21162/pakjas/21.1445","DOIUrl":"https://doi.org/10.21162/pakjas/21.1445","url":null,"abstract":"Leaf rust disease affects the wheat crop in several countries around the globe and it can influence the grain yield and its components. This research was carried out using 35 wheat genotypes during the growing season of 2016-2017 with 3 replications by RCBD under contrasting rust disease regimes. The statistical techniques used for the multivariate analyses include the calculations of correlations, principal components and clusters. The data about various physiological traits, grain yield components and disease severity were recorded under high disease pressure and maximum disease control conditions. Correlation analysis showed highly significant positive relationship of disease severity with relative membrane permeability but negative association with chlorophyll contents in the flag leaf and some yield attributes. In control conditions, the relative water content exhibited a highly significant positive relationship with the flag leaf area while highly significant negative relationship was observed with specific flag leaf weigh under disease condition. Principal component analysis demonstrated that first 4 PCs having eigenvalue >1 elucidated 73.578% and 82.80% of the total variation under diseased and control conditions respectively. Cluster analysis grouped 35 wheat genotypes among four different clusters. The members of cluster 1 revealed the maximum disease severity under control condition, but the disease severity was maximum for cluster 4 under disease condition. Scatter plot explained that, not a single cluster showed clear separation. The tree diagram also indicated that diversity in different disease conditions is controlled by genotypes. The results concluded that this genetic diversity could be helpful to the researchers and breeders for future objectives to enhance the food production and leaf resistance in bread wheat. Keywords: Wheat, Leaf rust, Multivariate analysis, Genetic diversity, Morpho-physiological traits","PeriodicalId":19885,"journal":{"name":"Pakistan Journal of Agricultural Sciences","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2021-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44158335","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

The effect of climate change on cotton productivity - an empirical investigation in Pakistan 气候变化对棉花产量的影响——巴基斯坦的实证调查

IF 0.8 4区农林科学

Pakistan Journal of Agricultural Sciences Pub Date : 2021-10-01 DOI: 10.21162/pakjas/21.885

M. Arshad

{"title":"The effect of climate change on cotton productivity - an empirical investigation in Pakistan","authors":"M. Arshad","doi":"10.21162/pakjas/21.885","DOIUrl":"https://doi.org/10.21162/pakjas/21.885","url":null,"abstract":"Pakistan is the primary producer of cotton, which is an indispensable crop worldwide. The agriculture sector depends on the climate and may be susceptible to future climate changes, such as increasing temperature, heavy rainfall, droughts, and floods directly impacting cotton productivity. This study empirically investigates the relationship between climate change variables and non-climate change variables on cotton productivity in Pakistan. An econometric technique, the “autoregressive distributed lag model” (ARDL), was employed on time series data from 1970 to 2018 to explore the existence and nature of the relationship among variables. The findings indicated the presence of co-integration among variables which confirms the long-run relationship among the variables. At the same time, the empirical results revealed that increases in temperature and rainfall positively affected cotton productivity. However, CO2 harms cotton productivity. Moreover, infrastructural changes positively affect cotton productivity in both the long and short run, while labor is negatively related to productivity. The area, fertilizer, and seed consumption showed a significant positive effect on cotton productivity. We employed the dynamic ordinary least squares (OLS), co-integration regression estimation, and the series test to validate the robustness of the finding. The finding of this study urges policymakers to devise a comprehensive policy to mitigate the adverse effect of climate change and upsurge water conservation. Furthermore, it is imperative to adopt environmentally friendly production inputs and modern techniques, which helps to gain sustainable cotton productivity. To conclude, the cotton crop is significantly affected by climate change subject to the region. Although this study analyzed the Pakistan case, the model can be generalized to all the developing countries","PeriodicalId":19885,"journal":{"name":"Pakistan Journal of Agricultural Sciences","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2021-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45667880","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Determination of the control point position for the estimation of the optimal cutoff time of closed-end furrow irrigation systems 闭式沟灌系统最佳截止时间估计控制点位置的确定

IF 0.8 4区农林科学

Pakistan Journal of Agricultural Sciences Pub Date : 2021-10-01 DOI: 10.21162/pakjas/21.86

Mohamed Khaled Salahou

{"title":"Determination of the control point position for the estimation of the optimal cutoff time of closed-end furrow irrigation systems","authors":"Mohamed Khaled Salahou","doi":"10.21162/pakjas/21.86","DOIUrl":"https://doi.org/10.21162/pakjas/21.86","url":null,"abstract":"Furrow irrigation systems are one of the dominant methods for growing cotton in the North China Plain and in other parts of the word. Many attempts have been made to improve furrow irrigation performance by selecting an optimal cut off time. The objective of this study is to determine the appropriate control point position for the estimation of the optimal cutoff time in a field situation with a closed-end furrow irrigation system. The experiments were conducted in a cotton field at the EcoAgricultural Experimental Station in Wuqiao, Hebei Province, North China Plain. Simulations employing two optimization strategies were used for determining the optimal cutoff time. These strategies were selected based on the irrigation system properties (total water applied depth and field characteristics), aiming to maximize application efficiency or requirement efficiency. The results show that the optimal cutoff time could be selected based on the relationship between the cutoff time and the advance time to a particular control point downstream. The position of this control point depends on the range of the inflow rate. The recommended control point position for estimating the optimal cutoff time was set at 0.9 of a furrow length for inflow rates less than 1.6 l/s and at 0.8 and 0.7 for inflow rates ranging between 1.6 and 2.0 l/s and 2.0 and 2.6 l/s, respectively. The results also show that to achieve a high irrigation performance when the inflow rate is high, it is better to reduce the requirements of irrigation and increase the number of irrigations. Determining the appropriate position of the control point helps to select the optimal cutoff time without requiring knowledge of the other irrigation system properties (i.e., soil water content, etc.). Keywords: Closed-end","PeriodicalId":19885,"journal":{"name":"Pakistan Journal of Agricultural Sciences","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2021-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45724056","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Influence of raw milk quality attributes on its pricing in Pakistan 巴基斯坦原料奶质量属性对其定价的影响

IF 0.8 4区农林科学

Pakistan Journal of Agricultural Sciences Pub Date : 2021-10-01 DOI: 10.21162/pakjas/21.1050

Waseem Ahmad

{"title":"Influence of raw milk quality attributes on its pricing in Pakistan","authors":"Waseem Ahmad","doi":"10.21162/pakjas/21.1050","DOIUrl":"https://doi.org/10.21162/pakjas/21.1050","url":null,"abstract":"In developing countries, milk quality characteristics are not maintained by the milk producers and the middlemen. This study initially estimates the influence of various milk quality attributes on its price and then estimate the effect of socio-demographic characteristics on the marginal price of the milk components. Data collected from milk consumers through personal interview method, and milk sample took from the same consumers are used to estimate a two-stage hedonic model. In the first stage, prices were estimated for milk components and in the second stage, implicit price of each component was used as the dependent variable. The first stage results show that fat, solids-not-fat, total plate counts, color, and pleasant aroma have a significant impact on the milk price. The second stage results indicate that fat and solids-not-fat values are a function of the sociodemographic characteristics of consumers. To maintain milk quality attributes, we recommend the establishment of chilling centers for maintenance of quality, checkpoints and mobile laboratories for testing quality, provision of basic testing equipment at subsidized rates, hygiene awareness program for stakeholders in value chain, health risk awareness for consumers consuming raw milk and its products, and introduction and popularization of enzyme-based lactoperoxidase preservation technology.","PeriodicalId":19885,"journal":{"name":"Pakistan Journal of Agricultural Sciences","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2021-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42766576","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Determining the nutrient content, relative feed value, and in vitro digestibility value of some legume forage plants 测定某些豆科牧草的营养成分、相对饲料价值和体外消化率

IF 0.8 4区农林科学

Pakistan Journal of Agricultural Sciences Pub Date : 2021-10-01 DOI: 10.21162/pakjas/21.131

E. Gürsoy

{"title":"Determining the nutrient content, relative feed value, and in vitro digestibility value of some legume forage plants","authors":"E. Gürsoy","doi":"10.21162/pakjas/21.131","DOIUrl":"https://doi.org/10.21162/pakjas/21.131","url":null,"abstract":"The purpose of this study was to determine the feed values of some legume forage plants growing in a natural environment. The plant materials used in the study were as follows: Alfalfa (Medicago sativa), varigated alfalfa (Medicago varia), bird vetch (Vicia cracca), mountain vetch (Vicia alpestris), mountain clover (Trifolium montanum), kura clover (Trifolium ambiguum), three-headed clover (Trifolium trichocephalum), purple crownvetch (Coronilla varia), and bird’s foot trefoil (Lotus corniculatus). The feeds were examined in terms of nutrient content, relative feed value, true dry matter digestibility, true organic matter digestibility, true neutral detergent fiber digestibility, and relative feed quality. The legume forage plants were found to be significantly different from each other in terms of nutrient contents (P<0.05). The mountain clover was found to have the highest contents of crude protein and crude fat among the legume forage plants examined in this study, while the alfalfa was found to have more contents of dry matter and NDF than the other legume forage plants. On the other hand, the dry matter intake was found to be the highest in the three-headed clover, the dry matter digestibility and relative feed value were found to be the highest in the purple crownvetch, and the relative feed quality was found to be the highest in the mountain vetch. The nutrient contents, relative feed values, and relative feed quality values of the forage plants showed that they could be used in animal feeding.","PeriodicalId":19885,"journal":{"name":"Pakistan Journal of Agricultural Sciences","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2021-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48358423","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Growth and trade performance of indian fish export to china 印度鱼类对华出口的增长和贸易表现

IF 0.8 4区农林科学

Pakistan Journal of Agricultural Sciences Pub Date : 2021-10-01 DOI: 10.21162/pakjas/21.1005

U. Nisar

{"title":"Growth and trade performance of indian fish export to china","authors":"U. Nisar","doi":"10.21162/pakjas/21.1005","DOIUrl":"https://doi.org/10.21162/pakjas/21.1005","url":null,"abstract":"China has been the largest producer of fish in the world since 1989 and became the largest consumer of fish and fishery products recently. With increase in China’s demand and preference for shellfishes and value-added fish products, India sees China as the second largest export destination after the US. This study analyzed the status, export performance and competitiveness of Indian fish export to China based on data (2000-2018) from trademap.org and UNCOMTRADE statistical database. Compound Growth Rate (CGR) revealed that the seafood export grew at an annual rate of 9.68% in terms of value with instability of 0.24 from 2000-2018. The Simpson Index of Diversity (SID) to the China revealed that the index values remained highest all throughout the years as compared to USA and the rest of the world. The Unit Value Realization (UVR) was found highest in live fishes ($34.92/kg) followed by fresh chilled fish ($7.19/kg), crustaceans ($5.97/kg) and others for 2018. Commodity wise RCA revealed that it is highly positive for frozen fillet meat mince (10.22) followed by crustaceans (8.0) and frozen fish (5.05), indicating that India has a strong comparative advantage in exporting these commodities to China.","PeriodicalId":19885,"journal":{"name":"Pakistan Journal of Agricultural Sciences","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2021-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41928322","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Nitrogen application rate and timing management for improved grain quality parameters of wheat crop 提高小麦品质参数的施氮量和定时管理

IF 0.8 4区农林科学

Pakistan Journal of Agricultural Sciences Pub Date : 2021-09-01 DOI: 10.21162/pakjas/21.102

G. R. Khan

{"title":"Nitrogen application rate and timing management for improved grain quality parameters of wheat crop","authors":"G. R. Khan","doi":"10.21162/pakjas/21.102","DOIUrl":"https://doi.org/10.21162/pakjas/21.102","url":null,"abstract":"Nitrogen use efficiency under flood irrigation system is generally low (30%) in field crops, which is one of the fundamental factors of high production cost in the developing countries. Optimum rate and timing of N-application is otherwise important to harvest good quality grain for backing in the recent climate change scenario. Optimum N-rate (NAR) corresponds with the application timing (NAT) has resulted in good quality grains. Aim of the study was to focus on spring wheat grain quality and N use efficiency (NUE) with NAR {i.e., 0, 100, 120, 140 and 160 kg ha-1) and NAT (i.e., 100% at sowing (NAR1), 50% at sowing and 50% at tillering (NAT2), 25% at sowing, 50% at tillering and 25% at booting (NAT3) and 25% at sowing, 25% at tillering and 50% at booting (NAT4)}. Treatment impacts were investigated focusing grain yield, grain-N, and quality parameters (i.e., crude protein, gluten, amylose and amylopectin). Experiment was a randomized complete block, in three replications, conducted at Agronomy Res. Farm of the University of Agric. Peshawar in 2016-17 and repeated in 2017-18. Results showed the highest NUE in100 kg N ha-1, followed by a decreasing rate (p<0.05) for every next N-increment. While averaged on N-rates, the highest NUE observed in NAT3 which did not differ fromNAT4 but decreased (p<0.05) for treatment NAT2 with lowest for theNAT1. Pakhtunkhuwa-2015 showed higher NUE among the varieties. Grain-N, grain yield, gluten and amylose did not differ with NAR 140 and 160 kg ha-1 as well as for the NAT3 and NAT4 but decreased for NAT2 and the lowest was noted for NAT1. The N-content of wheat grain was highest in Pakhtunkhuwa-2015, followed by Pirsabak-2015 and the lowest in DN-84. Nonetheless, grain amylopectin showed a reduction with increasing NAR and/or split N-applications from one to two and/or three doses. Cultivars did not show any changes in the amylopectin. It is concluded that in recent climate changes where flood irrigation system is practiced, three N-splits (NAT3 or NAT4) resulted higher quality grains with140 kg N ha-1 to wheat crop","PeriodicalId":19885,"journal":{"name":"Pakistan Journal of Agricultural Sciences","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2021-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41402402","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Appraisal of quantitative and qualitative losses in six rice genotypes caused by Trogoderma granarium (Everts) and Rhyzopertha dominica (F.) 六种水稻基因型因石榴花（Everts）和稻瘟病菌（Rhyzopertha dominica）引起的数量和质量损失的鉴定

IF 0.8 4区农林科学

Pakistan Journal of Agricultural Sciences Pub Date : 2021-09-01 DOI: 10.21162/pakjas/21.225

A. A. Chatha

{"title":"Appraisal of quantitative and qualitative losses in six rice genotypes caused by Trogoderma granarium (Everts) and Rhyzopertha dominica (F.)","authors":"A. A. Chatha","doi":"10.21162/pakjas/21.225","DOIUrl":"https://doi.org/10.21162/pakjas/21.225","url":null,"abstract":"The present study was conducted to probe out the nutritive losses caused by Rhyzopertha dominica (F.) and Trogoderma granarium (Everts) were quantified in six rice genotypes (KSK-434, KSK-282, Irri-6, Shaheen basmati, Basmati 385 and Chenab basmati). Percent crude protein, ash and moisture content were measured for qualitative losses, while for quantitative losses, frass weight and weight loss were examined after infestation period of 90 days of. Highest weight losses (25.76%) and (15.37%) were observed in KSK-434 by infestation of R. dominica and T. granarium, respectively, compared with un-infested grains after a storage period of 90 days. Highest frass weight (8.57 g) was recorded for KSK-434 while relatively low frass weight (4.16 g) was recorded for Basmati 385 by infestation of R. dominica. Relatively low frass weights of 5.67, 4.46 and 4.01 g were recorded in KSK-434, Chenab basmati and Shaheen basmati, respectively by attack of T. granarium. Highest percentage moisture values (14.03 and 11.24%) were recorded for KSK-434 by infestations of both test insects compared to non-infested (controls). Percent crude protein was decreased (from 6.97% to the 4.92%) due to infestation of R. dominica values by strain were KSK-434 (4.54%), Shaheen basmati (4.89%) and chenab basmati (4.92%). In the case of T. granarium infestation, almost all the varieties sustained the low protein contents except KSK-434 (5.02%) and Basmiti 385 (5.17%) and Shaheen basmati, protein contents loss comparable to non-infested control (7.09%). Ash content was high in genotype KSK- 282 (0.68 %) compared to control. KSK-434 and Chenab basmati had relatively low ash percentage due to high infestation of T. granarium. R. dominica attack produced the highest percent ash content (0.66%) in KSK-282 and the least (0.44%) in KSK- 434. The tested rice genotypes were more susceptible to R. dominica than T. granarium among the different genotypes of selected cereals.","PeriodicalId":19885,"journal":{"name":"Pakistan Journal of Agricultural Sciences","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2021-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49188428","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

First report of Xanthomonas citri Subsp. Citri causing citrus canker on grape fruit (Citrus paradisi), washington naval (Citrus sinensis), kaghzi limon (Citrus aurantifolia Swingle), lemon (Citrus lim 柑橘黄单胞菌亚属首次报道。引起柑橘溃疡病的柑橘属植物有葡萄(citrus paradisi)，华盛顿海军(citrus sinensis)，卡格齐柠檬(citrus aurantifolia Swingle)，柠檬(citrus lim)

IF 0.8 4区农林科学

Pakistan Journal of Agricultural Sciences Pub Date : 2021-09-01 DOI: 10.21162/pakjas/21.9701

Muhammad Shah Nawaz ul Rehman

{"title":"First report of Xanthomonas citri Subsp. Citri causing citrus canker on grape fruit (Citrus paradisi), washington naval (Citrus sinensis), kaghzi limon (Citrus aurantifolia Swingle), lemon (Citrus lim","authors":"Muhammad Shah Nawaz ul Rehman","doi":"10.21162/pakjas/21.9701","DOIUrl":"https://doi.org/10.21162/pakjas/21.9701","url":null,"abstract":"Citrus fruit production is largely affected by different bacterial and fungal pathogens. In Pakistan bacterial diseases like citrus bacterial canker (CBC) pose severe risk to citrus economy. Diagnoses of such diseases could be helpful to avoid the epidemics in nurseries or orchids. In 2011-12, citrus canker symptoms i.e., callus-like outgrowths on leaves and fruits of grape fruit (Citrus paradisi), Washington naval (Citrus sinensis), Kaghzi Limon (Citrus aurantifolia swingle), lemon (Citrus Limon) and pomelo (Citrus maxima) were noticed in Sargodha district of Punjab, Pakistan. Bacteria i.e., yellow mucoid, Xanthomonas- like isolates, were isolated from these lesions. Bacteria isolated from these lesions were cultured and total DNA was isolated. A diagnostic fragment of 581 bp based on rpf genes of Xanthomonas citri pv. citri was amplified, cloned and completely sequenced. BLAST and evolutionary analysis revealed that these isolates show 100% sequence similarity and group with Xanthomonas citri subsp. citri from Argentina (CP023285) and Reunion (CP018858), (CP018854). To our knowledge, this is the first formal report of X. campestris pv. citri pathotypes A on Citrus paradise, Citrus sinensis, Citrus maxima, Citrus Limon and Citrus aurantifolia swingle in Pakistan","PeriodicalId":19885,"journal":{"name":"Pakistan Journal of Agricultural Sciences","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2021-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67673859","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0