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Diversity Assessment Among Seventy-Four Potato Genotypes for Selection in Breeding Program 74个马铃薯基因型的多样性评价及育种选择
Pub Date : 2022-12-30 DOI: 10.33687/jpe.004.02.4399
A. Khan, S. Erum, N. Riaz, Syed Ijaz ul Hassan, Muhammad Ahson Khan, M. Irfan, T. Javaid, Muhammad Mudassir Hussain, M. Hanif, H. Khurshid, Saqib Saleem, Rizwan Azim
Sustainable production of food crops relies on germplasm improvement and genetic diversity. In the present study, seventy-four potato genotypes were evaluated for diversity analysis during autumn 2017-2018 and 2018-2019 at NARC, Islamabad. Our results showed significant diversity in qualitative traits with reference to skin color of five types (Red, yellowish, brown, light yellow, light brown skin color tubers=5), three types of flesh color (Yellow, cream and white flesh color tubers=3), three sizes of tubers (Medium, small and large size tubers=3) and four shape of tuber (Oval, round, oblong, elliptic= 4 shapes) and four different eyes color (Brown, light brown, dark red and yellow eyes color=4). Potato genotype under study had very high genetic variance for quantitative attributes including weight of tuber per plant and weight number of tubers per lane, leaf area and plant height. Significant positive correlation was observed between number of tubers per plant (TPP) with number of eyes on tubers (r = 0.241) and number of tubers per lane (TPL) (r = 0.349). Plant height was found significantly positive correlated with leaf area (r= 0.456), germination percentage (r = 0.255) and weight of tubers per plant (r = 0.307). Leaf area (LA) showed positive significant correlation with number of tubers per plant (r = 0.466) and weight of tubers per plant (r = 0.263), yield and harvest index (r = 0.798, 0.755, 0.255). Weight of tubers per lane (WTL) showed positive correlation with weight of tubers per plant (r = 0.387). Regarding the interrelation between the traits and genotypes, the first two principal component axes (PC1, 24.83% and PC2, 23.46%) accounted for about 48.29% of the total variability reflecting the complexity of the variation between the plotted traits of genotypes. The present study will be useful for the precise selection for effective breeding program.
粮食作物的可持续生产依赖于种质改良和遗传多样性。在本研究中,在伊斯兰堡NARC对74种马铃薯基因型进行了2017-2018秋季和2018-2019秋季的多样性分析。结果表明,5种皮肤颜色(红、黄、棕色、浅黄、浅棕色皮肤颜色块茎=5种)、3种果肉颜色(黄、奶油色和白色皮肤颜色块茎=3种)、3种大小块茎(中、小、大块茎=3种)和4种形状块茎(椭圆形、圆形、椭圆形、椭圆形=4种形状)和4种不同眼睛颜色(棕色、浅棕色、深红、黄色眼睛颜色=4种)在质量性状上存在显著差异。所研究的马铃薯基因型在单株块茎重量、单行块茎重量数、叶面积和株高等数量性状上具有很高的遗传变异。单株块茎数(TPP)与块茎眼数(r = 0.241)与单株块茎数(r = 0.349)呈显著正相关。株高与叶面积(r= 0.456)、发芽率(r= 0.255)、单株块茎质量(r= 0.307)呈极显著正相关。叶面积(LA)与单株块茎数(r = 0.466)、单株块茎质量(r = 0.263)、产量和收获指数(r = 0.798、0.755、0.255)呈显著正相关。单株块茎质量与单株块茎质量呈显著正相关(r = 0.387)。在性状与基因型的相关关系中,前两个主成分轴(PC1, 24.83%和PC2, 23.46%)约占总变异率的48.29%,反映了被测性状间基因型变异的复杂性。本研究将为有效的育种方案的精确选择提供依据。
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引用次数: 0
Field Response of Brassica Germplasm against Alternaria Leaf Spot Disease and its Management 芸苔属种质对互花斑病的田间反应及防治
Pub Date : 2022-12-15 DOI: 10.33687/jpe.004.02.4025
M. Kamran, H. Abbas, M. Shahbaz, Muhammad Ehetisham-ul-Haq, Zaheer Aslam, Qamer Anser Tufail Khan, H. Abbas, M. Iqbal, M. A. Amin
Brassica is an edible oilseed crop and world’s third most important oilseed source. Alternaria leaf spot disease of Brassica, caused by Alternaria brassicae (Berk) is major limiting factor for its yield loss. In current study forty-two Brassica germplasm (B. napus = 17, B. juncea = 25) were evaluated against Alternaria leaf spot disease at research area of Plant Pathology Research Institute (PPRI), Ayub Agricultural Research Institute (AARI), Faisalabad, Pakistan. These germplasms were sown in augmented design with 10 cm plant x plant and 60 cm row x row distance in single replication. A susceptible check KJ-159 was sown after every two entries. Data were recorded on 0-9 disease severity rating scale. Out of 17 germplasm of B. napus no germplasm was found to be immune. Two germplasm exhibited highly resistant while eight germplasm showed resistance response against the disease. Six germplasm were moderately resistant and only one showed moderately susceptible response. Similarly, out of 25 germplasm of B. junceas even were found moderately resistant and ten showed moderately susceptible response. Seven were susceptible while only one germplasm was highly susceptible. Then in-vitro efficacy of different fungicides was evaluated against A. brassicae. For evaluation of fungicides Potato Dextrose Agar (PDA) amended with five different fungicides at different concentrations (10, 50, 100 and 200 ppm) was used. Experiment was conducted in completely randomized design with ten replications. Data were recorded on mycelial growth (mm) of fungus. Mancozeb (Ethylene bisdithiocarbamate) and Nativo (Tebuconazole) significantly inhibited the growth at all concentrations while Antracol (Propineb) was significantly least effective against A. brassicae. The current research provided the new resistance source of Brassica germplasm to the breeders against Alternaria leaf spot disease and its management.
油菜是一种可食用的油籽作物,也是世界上第三大油籽来源。由油菜互花孢菌(Berk)引起的油菜互花孢叶斑病(Alternaria brassicae)是造成油菜产量损失的主要限制因素。本研究在巴基斯坦费沙拉巴德Ayub农业研究所(AARI)植物病理学研究所(PPRI)研究区对42种芸苔属植物(B. napus = 17, B. juncea = 25)进行了抗褐斑病评价。这些种质采用增广播种设计,单株间距为10 cm,行间距为60 cm。每两个条目后播种易感检查KJ-159。数据以0-9疾病严重程度评定量表记录。在17份甘蓝型油菜种质中,未发现有免疫作用的种质。2个种质表现出高度抗性,8个种质表现出抗性反应。6种种质具有中等抗性,只有1种表现出中等敏感反应。同样,在25份肉芽甘蓝种质中,甚至发现了中度抗性,10份表现出中度敏感反应。7个种质敏感,只有1个种质高度敏感。然后评价了不同杀菌剂对芸苔菌的体外药效。以马铃薯葡萄糖琼脂(PDA)为研究对象,用5种不同浓度的杀菌剂(10、50、100和200 ppm)对其进行改性。试验采用完全随机设计,每10个重复。记录真菌菌丝生长(mm)数据。Mancozeb (Ethylene bisdithiocarbamate)和Nativo (Tebuconazole)在所有浓度下均能显著抑制芸苔菌的生长,而Antracol (proproineb)对芸苔菌的抑制作用均最弱。本研究为育种者提供了油菜种质资源抗互花斑病的新来源及管理方法。
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引用次数: 0
Sensory Acceptance of Malted and Un-Malted Barley Pretzels in South Punjab Sector of Pakistan 巴基斯坦旁遮普南部地区对麦芽和非麦芽大麦椒盐脆饼的感官接受度
Pub Date : 2022-11-28 DOI: 10.33687/jpe.004.02.4432
Umair Aziz, Ambreen Naz, Shabbir Ahmad, M. Shehzad, Riaz Hussain, Hira Tariq, Muhammad Irfan, Nosheen Naz
Barley (Hordeum vulgare) is a cereal crop, that belongs to the grass family. It is used as a food source in some cultures as well. The current research was planned to check the sensory acceptance of malted barley confection “pretzels”, which are not native to Pakistan. Purposely, the barley was procured from the local market of Multan, Pakistan by considering quality traits account i.e., colour, length, width, and thousand kernel weight. The cleaned barley was subjected to malting till seed germination for up to 4 days. After the process of germination, the seed was fried in the drier at 65 ℃ for 16 hours followed by flour development. The colour value of un-malted barley for l, a, and b were 54.23, 1.91, and 11.21 whilst malted barley presented 53.52, 0.86, and 11.03, respectively for the same traits. Afterwards, the pretzels were prepared by following the standard recipe by planning various treatments i.e., T0 (100% wheat flour), T1 (80% wheat flour, 20% malted flour), T2 (60% wheat flour, 40% malted flour), T3 (40% wheat flour, 60% malted flour), T4 (80% wheat flour, 20% un-malted flour), T5 (60% wheat flour, 40% un-malted flour) and T6 (40% wheat flour, 60% un-malted flour). The prepared products were subjected to sensory evaluation by a trained judges panel at different intervals during storage (0, 7th, and 14th day) by following a 9-point hedonic scale for aroma, texture, and overall acceptability. The malted barley-based pretzels 5.64±0.19 (T3) showed maximum value for aroma whereas, T5 presented 5.87±0.11 (T5) for the un-malted treatment plan on the 14th day. In the case of texture, T1 was appreciated at 0day of storage by securing 6.49±0.16. As far as overall acceptability was concerned, T6 presented 7.57±0.36 on the 0th day with a slight decline of 5.42±0.29 for the same treatment.  
大麦(Hordeum vulgare)是一种谷类作物,属于禾本科。在一些文化中,它也被用作食物来源。目前的研究计划是检查对麦芽糖果“椒盐脆饼”的感官接受度,这种糖果不是巴基斯坦本土的。我们特意从巴基斯坦木尔坦当地市场采购了大麦,考虑了质量性状,即颜色、长度、宽度和千粒重。清洗后的大麦经过4天的麦芽发酵直到种子发芽。种子萌发后,在烘干机中65℃油炸16小时,然后发粉。在相同性状下,未发酵大麦的颜色值分别为54.23、1.91和11.21,而发酵大麦的颜色值分别为53.52、0.86和11.03。然后按照标准配方制作椒盐卷饼,分别为T0(100%小麦粉)、T1(80%小麦粉、20%麦芽粉)、T2(60%小麦粉、40%麦芽粉)、T3(40%小麦粉、60%麦芽粉)、T4(80%小麦粉、20%非麦芽粉)、T5(60%小麦粉、40%非麦芽粉)、T6(40%小麦粉、60%非麦芽粉)。在储藏期间(第0、7、14天),经过训练的评审团按照9分制的香气、质地和总体可接受性对成品进行感官评价。在第14天,以麦芽为基础的椒盐脆饼的香气值最大值为5.64±0.19 (T3),而非麦芽处理方案的T5香气值为5.87±0.11 (T5)。质地方面,贮藏第0天T1值为6.49±0.16。整体可接受性方面,T6在第0天为7.57±0.36,在相同处理下略有下降,为5.42±0.29。
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引用次数: 0
Nano-pesticides: Composition, Bioavailability and Release Mechanism in the Environment 纳米农药:组成、生物利用度及环境释放机制
Pub Date : 2022-11-07 DOI: 10.18811/ijpen.v8i02.04
Vani Raveendran, Vanisha Godara, Dion Mistry, M. S. Sankhla, K. Awasthi, G. P. Singh, P. Lodha, G. Awasthi
The present investigation was carried out during 2015-2016. The change was analyzed for a period of 10 years (2005 to 2015). Landsatoperational land imager (OLI) and thematic mapper (TM) satellite images (of 30 m resolution) of the years 2015 and 2005 were used.Mapping was performed on a 1:50,000 scale using ArcGIS software, and for image enhancement, ERDAS imagine software was used.Extensive Ground Truthing was employed to supplement accuracy assessment and a total of 133 ground truth points were taken fordata collection. The overall classification accuracy of the mapping was 92.48% and the Kappa coefficient was 0.87. The study area wasdelineated via visual image interpretation technique into 10 LULC classes viz., forest, forest scrub, agriculture, grassland, snow, waterbody,horticulture, wasteland, and agroforestry respectively. The forest cover density map was classified into three classes on the basis of crowndensity viz., Closed Forest, Open Forest and Forest Scrub. Furthermore, two additional classes grassl and non-forest were also delineated.The results obtained from change analysis were used to identify the drivers of forest cover change using a close-ended semi-structuredinterview schedule. The responses were assigned scores for the ranking of drivers using statistical analysis. The comparison of maps of2005 and 2015 revealed that the total forest area has reduced by 0.48% from 2005 to 2015. The area under agriculture has declined by0.87% during the same period. Horticulture has shown an increase of 0.8% during the decade. It was also found that the area underClosed Forests reduced by 1.05% from 2005 to 2015 while Open Forests, forest scrub, and grassland increased by 0.57 %, 0.27% and0.08% respectively. In terms of area, conversion of Closed Forest into Open Forest 851.48 ha), Closed Forest into Forest Scrub (104.77ha), and Open Forest into Forest Scrub (33.26 ha) ascribed to forest degradation whereas conversion of 111.42 ha, 59.87 ha and 26.61ha of land from closed forest, forest scrub and open forest into non-forest can be attributed to deforestation.
本调查于2015-2016年进行。这一变化被分析了10年(2005年至2015年)。使用2015年和2005年的Landsatoperational land imager (OLI)和专题制图器(TM)卫星图像(分辨率为30 m)。使用ArcGIS软件以1:50 000比例尺进行制图,使用ERDAS imagine软件进行图像增强。采用广泛的地面真值来补充准确性评估,共采集133个地面真值点进行数据收集。总体分类精度为92.48%,Kappa系数为0.87。通过视觉图像解译技术将研究区划分为森林、森林灌丛、农业、草地、雪地、水体、园艺、荒地和农林业10个LULC类。以冠密度为基础,将森林覆盖密度图分为封闭林、开放林和森林灌丛3类。此外,还划分了草地和非森林两个类别。利用变化分析得到的结果,利用封闭式半结构化访谈时间表识别森林覆盖变化的驱动因素。通过统计分析,为这些回答分配分数,以对司机进行排名。2005年和2015年的地图对比显示,2005年到2015年,森林总面积减少了0.48%。同期,农业用地面积减少了0.87%。在过去十年中,园艺增长了0.8%。2005 - 2015年,林下面积减少了1.05%,而开阔林、森林灌丛和草地面积分别增加了0.57%、0.27%和0.08%。从面积上看,森林退化导致封闭林变为开阔林(851.48 ha)、封闭林变为森林灌丛(104.77ha)和开放林变为森林灌丛(33.26 ha),而森林砍伐导致封闭林、森林灌丛和开放林变为非森林的面积分别为111.42 ha、59.87 ha和26.61ha。
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引用次数: 0
An Indigenous Method of Cremation in Earthen Containers as a Sequel to Disaster Resilience: A Case Study of Kusheshwarsthan Wetland Area in Darbhanga District of North Bihar 土制容器火葬的土著方法:灾害恢复能力的延续——以比哈尔邦北部达尔班加地区库什瓦斯坦湿地地区为例
Pub Date : 2022-11-07 DOI: 10.18811/ijpen.v8i02.10
V. Jha
The paper takes into account an indigenous adaptation for cremation in the extreme flood situations in the Kusheshwarsthan East C.D. block of Darbhanga district in north Bihar. With no dry land all around in the vicinity, people have no option other than raising a bamboo platform on which 6 to 8 fit high mud container (Kothi) is placed inside. The dead body is put in a squatting position. The fuels includedegrained maize cobwebs, dung cakes, wood splits of mango and desi ghee (clarified butter). Sugar crystals are added to invigorate the flames of the pyre. Wooden boats are hired to ferry the dead body as well as the mourners to the cremation place. Almost a decade-long practice of using degrained maize cobwebs as cremation fuel is an example of resilience during extreme flood disasters. At the same time insistence on using mango wood also for burning a dead body speaks of people's adherence to this plant, even during extremities.
本文考虑到在比哈尔邦北部达尔班加区库什瓦斯坦东部cd块的极端洪水情况下,土著对火葬的适应。由于附近没有干燥的土地,人们别无选择,只能搭建一个竹平台,在上面放置6到8个适合的高泥容器(Kothi)。尸体被摆成蹲姿。这些燃料包括去颗粒的玉米蜘蛛网、粪饼、芒果的木片和desi酥油(澄清黄油)。加入糖晶体可以使火堆的火焰更加活跃。木船被雇来将尸体和哀悼者运送到火葬场。近十年来,人们一直在使用去颗粒玉米蜘蛛网作为火化燃料,这是应对极端洪水灾害的一个例子。与此同时,人们坚持使用芒果树来燃烧尸体,这也说明了人们对这种植物的坚持,即使是在四肢瘫痪的时候。
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引用次数: 0
Bio-control by using Antagonistic (Filamentous Fungi and VAM) and Bacteria against Macrophomina phaseolina 拮抗菌(丝状真菌和VAM)和细菌对菜绿巨噬菌的生物防治
Pub Date : 2022-11-07 DOI: 10.18811/ijpen.v8i02.02
R. Thakur, D. Gupta, S. Jandaik
The excessive use of pesticides and fertilizers in the current agricultural system, which is done to increase production, completelyeradicate plant pathogens, and reduce undesirable weeds, has a detrimental effect on soil quality, water body environment, animal andhuman health due to the toxicity, recalcitrance, and carcinogenic potential of many of these compounds. It has long been thought thatbiological plant disease control could replace current methods of prevention. Filamentous fungi (especially Aspergillus spp., Trichodermareesei, and Neurospora crassa), bacteria (Pseudomonas, Bacillus, Burkholderia, Lysobacter, Serratia, and Pantoea), and Vesicular ArbuscularMycorrhiza (VAM) (G. mosseae, Glomus claroideum, Glomus aggregatum) are employed instead of chemicals in biocontrol. M. phaseolinais a fungus that lives in the root soil and produces dry root rot/stem canker, stalk rot, and charcoal rot. The fungus M. phaseolina causescharcoal rot, stalk rot, and dry root rot/stem canker in plant roots. Melon, strawberries, and tomatoes are just a few of the horticulturalcrops that M. phaseolina has been discovered on throughout Europe, the US, Australia, Chile, and Israel. To manage M. phaseolina, variousbiocontrol agents (filamentous fungi, VAM, and bacteria) are used successfully and effectively.
在当前的农业系统中,农药和化肥的过度使用是为了增加产量,彻底根除植物病原体,减少有害杂草,由于许多这些化合物的毒性,顽固性和致癌潜力,对土壤质量,水体环境,动物和人类健康产生了有害影响。长期以来,人们一直认为植物病害的生物控制可以取代目前的预防方法。丝状真菌(特别是曲霉、木霉和粗神经孢子菌)、细菌(假单胞菌、芽孢杆菌、伯克氏菌、溶菌、沙雷氏菌和泛菌)和水泡丛枝菌根(VAM) (G. mosseae、Glomus claroideum、Glomus aggregatum)被用来代替化学药剂进行生物防治。M. phaseolina是一种生活在根部土壤中的真菌,产生干性根腐病、茎腐病和木炭腐病。真菌M. phaseolina在植物根系中引起木炭腐病、茎腐病和干性根腐病。在欧洲、美国、澳大利亚、智利和以色列各地都发现了菜豆分枝杆菌,甜瓜、草莓和西红柿只是其中的一些园艺作物。为了控制菜绿支原体,各种生物防治剂(丝状真菌、VAM和细菌)被成功有效地使用。
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引用次数: 0
Nuclear Technique Applications Vis-A-Vis Soil Fertility and Plant Nutrition: An Overview 核技术在土壤肥力和植物营养方面的应用综述
Pub Date : 2022-11-07 DOI: 10.18811/ijpen.v8i02.03
A. M. Shah, T. I. Shah, Shaista Nazir, I. Khan, S. Bangroo, M. Chesti, A. M. Aezum, A. R. Malik, Y. H. Mir, Hujjat Ul-Baligha, Aabiroo Rashid, Gowhar Mir
Nuclear techniques in agriculture encircle the exploitation of isotopic and radiation techniques to contend with diseases and pests,upsurge production of crops, water, and land resource protection, safeguard food safety in hand with authenticity and elevate theproduction of livestock. Nuclear techniques intend to ease trials regarding food security, safety, and sustainable agriculture development.Nuclear techniques in the circle of agriculture have paid significantly to the growth of isotopic techniques to assess soil deteriorationapart from the creation of effective soil and land conservation approaches. These interventions encompass fallout radionuclides encircling137Cs, 210Pb and 7Be and compound specific stable lsotopes (CSSI) techniques. The sensitive estimates of total N2 fixation across thegrowth cycle of leguminous crops reside in the isotopic method application with the employment of a stable 15N isotope, usually atenrichment as well as natural abundance levels. The utilization of Oxygen-18 and Hydrogen-2 aids to study the utilization of plant water,the quantification of agricultural transpiration, and the development of tactics to boost crop productivity, minimize unproductive lossesof water, and check water as well as land degradation. For the comprehension of biological courses and mechanisms of ecosystemfunctioning, nuclear-based approaches are supportive tools, not a replacement for conventional techniques. As a result, a thoroughassessment of the demand for employing a nuclear/isotopic technique, as well as selection of an apt isotopic technique, is required,taking into account the objective of research, facilities and expertise accessible, and affiliated risks in view of safe conduct and disposalof menacing constituents in addition to the financial considerations.
农业核技术包括利用同位素和辐射技术防治病虫害,提高作物产量,保护水资源和土地资源,保障食品安全,提高畜牧业生产。核技术旨在简化有关粮食安全、安全和可持续农业发展的试验。核技术在农业领域的应用,除了创造了有效的土壤和土地保护方法外,还极大地促进了同位素技术的发展,以评估土壤退化。这些干预措施包括围绕137cs, 210Pb和7Be的沉降放射性核素以及化合物特定稳定同位素(CSSI)技术。豆科作物在整个生长周期中对总氮固定的敏感估计存在于同位素方法的应用中,使用稳定的15N同位素,通常在富集和自然丰度水平上。氧-18和氢-2的利用有助于研究植物水分的利用,农业蒸腾的量化,以及制定提高作物生产力、减少非生产性水分损失、防止水和土地退化的策略。为了理解生态系统功能的生物学过程和机制,基于核的方法是辅助工具,而不是传统技术的替代品。因此,需要对采用核/同位素技术的需求进行彻底评估,并选择合适的同位素技术,同时考虑到研究目标、可获得的设施和专门知识,以及考虑到安全行为和处置威胁成分的相关风险,此外还要考虑到财务方面的考虑。
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引用次数: 0
A New Pollen Aperture in Schleichera oleosa (Lour.) Oken from Madhya Pradesh, Central India, and its Taxonomic and Evolutionary Significance 石竹属(Schleichera oleosa)的一个新花粉孔来自印度中部中央邦的肯肯物种及其分类学和进化意义
Pub Date : 2022-11-07 DOI: 10.18811/ijpen.v8i02.07
M. F. Quamar, A. Garg, A. Farooqui, Nagendra Prasad, Salman Khan, A. Shukla
Angiosperms demonstrate a surprisingly frequent phenomenon of variability in the gross pollen morphological characteristics. In thepresent study, we recorded and described a new aperture in the pollen grains of Schleichera oleosa (Lour.) Oken, a monotypic genusof the soapberry family Sapindaceae, from Madhya Pradesh, central India, based on the LM and CLSM observations. This condition istermed the tetra-zono-parasyncolporoidate condition. A new pollen aperture has been recorded in this monotypic genus with theusual one (tri-zono-parasyncolporoidate condition), and this phenomenon of the occurrence of a new with increased number of pollenaperture is known as pollen aperture heteromorphism. The study will further help identify this taxon from the sedimentary archives asone of the indicators of the warm and humid (moist) climate and increased monsoonal rainfall.
被子植物在花粉形态特征上表现出惊人的频繁变异现象。在本研究中,我们记录并描述了施莱赫拉(Schleichera oleosa, Lour)花粉粒中的一个新孔。基于LM和CLSM的观察,发现来自印度中部中邦的皂子科单型属Oken。这种情况称为四区-副区- colporoidate情况。在该单型属中发现了一种新的花粉孔,与通常的花粉孔(三带-副异型状态)不同,这种新的花粉孔数量增加的现象称为花粉孔异型现象。该研究将进一步帮助从沉积档案中识别出这一分类群,作为温暖潮湿气候和季风降雨增加的标志之一。
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引用次数: 1
Integrated Application of Trichoderma Mixture and NPK Enhances the rice Productivity in Sodic Soil 木霉与氮磷钾混合施用可提高盐碱地水稻产量
Pub Date : 2022-11-07 DOI: 10.18811/ijpen.v8i02.06
Anshu ., P. Agarwal, K. Mishra, Poonam C. Singh
Abiotic stresses due to changing environmental conditions and intensive agriculture are causing soil salinity and sodicity leading tosoil deterioration. It directly affects nutrient availability and uptake and reduces plant productivity. The microorganisms are known toimprove the availability of nutrients in the soil and therefore, the present work aimed to maximize the use of applied fertilizers and boostthe productivity. The effects of the Trichoderma mixture (TrichoMix) and NPK on plant growth and rice yield in degraded land underfield conditions was studied. The abiotic stress tolerant Trichoderma strains comprising of T. koningiopsis (NBRI-PR5) and T. asperellum(NBRI-K14) were used in the treatments (i) Control (Cont.), (ii) NPK, as per recommended dose (NPK100%) (iii) Trichoderma mixture (NBRIPR5+NBRI-K14) (TrichoMix) (iv) TrichoMix + NPK50%. Significantly higher plant growth and yield (6.57q/h) was obtained in TrichoMix+NPK50% treatment. The improvement in rice production in the treatment TrichoMix +NPK50% was ascribed to the significant changes insoil physiochemical characteristics such as water holding capacity (35%), bulk density (40%), total organic carbon (42%), available N(39%), P (44%), K (48%) and microbial biomass carbon (88%). The results conclude that the mixture of T. koningiopsis (NBRI-PR5) and T.asperellum (NBRI-K14) may be recommended as sodic soil amendment to increase plant growth and yield in combination with chemicalfertilizers to support rice cultivation.
由于环境条件的变化和集约化农业造成的非生物胁迫导致土壤盐碱化,导致土壤退化。它直接影响养分的有效性和吸收,降低植物的生产力。众所周知,微生物可以提高土壤中养分的利用率,因此,目前的工作旨在最大限度地利用所施用的肥料并提高生产率。研究了在退化土地地下条件下,木霉与氮磷钾混合施用对植物生长和水稻产量的影响。采用由koningiopsis (nbr - pr5)和T. asperellum(nbr - k14)组成的非生物抗逆性木霉菌株进行(i)对照(对照),(ii) NPK,按推荐剂量(NPK100%), (iii)木霉混合物(NBRIPR5+ nbr - k14) (TrichoMix), (iv) TrichoMix + NPK50%。TrichoMix+NPK50%处理可显著提高植株生长和产量(6.57q/h)。TrichoMix +NPK50%处理对水稻产量的改善主要归因于土壤理化特性的显著变化,如持水量(35%)、容重(40%)、总有机碳(42%)、速效氮(39%)、磷(44%)、钾(48%)和微生物生物量碳(88%)。综上所述,koningiopsis (nbr - pr5)和asperellum (nbr - k14)混合施用可作为盐碱化土壤改良剂,与化肥配合使用,促进水稻生长和产量。
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引用次数: 0
The Impact of N Input on Plant Functional Traits Such as C3, C4, Native, and Non-native in Terms of Abundance, Frequency, and Density 氮输入对植物C3、C4、原生和非原生功能性状丰度、频率和密度的影响
Pub Date : 2022-11-07 DOI: 10.18811/ijpen.v8i02.09
Vijay P. Gautam
This study investigates the ecological changes in grassland vegetation at Banaras Hindu University’s horticulture field. Caudatemethods were used for vegetation analyses. In 72 experimental plots of 1×1m2, repeated quadrat sampling yielded 176 herbs. Plantfunctional types such as legumes, non-legumes, grasses, forbs, and sedges were classified as C3, C4, native, and non-natives traitsbased on their frequency, abundance, and density. From the rainy season of 2016 to the summer season of 2019, the mean values offrequency, abundance, and density against the N gradient were calculated. Therefore the results showed that, nitrogen is essential forthe competitive equilibrium of C3 and C4 species. This study suggests that N deposition-induced changes in competitive interactionsmay be disadvantages to native species that thrive in low-nutrient environments, such as N2-fixers, ultimately leading to changes in thecomposition of plant communities. In comparison to N2 fixers, non-N2 fixers appear to be more effective at using extra N for growth.Our findings show that the diversity of grasslands has dramatically shifted from native to introduced species, proving that non-nativespace invaders are destroying the rich grassland ecosystems around the world. By changing the dominant species and its response towhich species dominates the response at the community level, this change in abundance may alter the ecosystem functions. Based onour study, the vegetation was found to be heterogeneous up to N dosage of 60 kg/ha/year.
本研究调查了巴纳拉斯印度大学园林场草地植被的生态变化。植被分析采用尾盘法。在1×1m2的72块试验田中,重复样方取样共获得176种草本植物。将豆科植物、非豆科植物、禾本科植物、草本植物和莎草植物的功能类型按其频率、丰度和密度划分为C3、C4、本地和非本地性状。从2016年雨季到2019年夏季,计算了平均频率、丰度和密度随N梯度的变化。因此,氮对C3和C4物种的竞争平衡至关重要。该研究表明,氮沉降引起的竞争相互作用的变化可能不利于在低营养环境中茁壮成长的本地物种,如固氮生物,最终导致植物群落组成的变化。与氮固定物相比,非氮固定物似乎更有效地利用额外的氮进行生长。我们的研究结果表明,草原的多样性从本地物种到引进物种发生了巨大的变化,证明了非本地空间入侵者正在破坏世界各地丰富的草原生态系统。在群落水平上,通过改变优势种及其对哪种物种主导响应的反应,这种丰度的变化可能会改变生态系统的功能。本研究发现,在施氮量为60 kg/ha/年之前,植被呈异质性。
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引用次数: 0
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INTERNATIONAL JOURNAL OF PLANT AND ENVIRONMENT
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