共查询到20条相似文献,搜索用时 171 毫秒
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Yaduru Shasidhar Murali T.Variath Manish K.Vishwakarma Surendra S.Manohar Sunil S.Gangurde Manda Sriswathi Hari Kishan Sudini Keshavji L.Dobariya Sandip K.Bera Thankappan Radhakrishnan Manish K.Pandey Pasupuleti Janila Rajeev K.Varshney 《作物学报(英文版)》2020,(1):1-15
Foliar fungal diseases(rust and late leaf spot)incur large yield losses,in addition to the deterioration of fodder quality in groundnut worldwide.High oleic acid has emerged as a key market trait in groundnut,as it increases the shelf life of the produce/products in addition to providing health benefits to consumers.Marker-assisted backcrossing(MABC)is the most successful approach to introgressing or pyramiding one or more traits using traitlinked markers.We used MABC to improve three popular Indian cultivars(GJG 9,GG 20,and GJGHPS 1)for foliar disease resistance(FDR)and high oleic acid content.A total of 22 BC3F4 and 30 BC2F4 introgression lines(ILs)for FDR and 46 BC3F4 and 41 BC2F4 ILs for high oleic acid were developed.Recurrent parent genome analysis using the 58 K Axiom_Arachis array identified several lines showing upto 94%of genome recovery among second and third backcross progenies.Phenotyping of these ILs revealed FDR scores comparable to the resistant parent,GPBD 4,and ILs with high(~80%)oleic acid in addition to high genome recovery.These ILs provide further opportunities for pyramiding FDR and high oleic acid in all three genetic backgrounds as well as for conducting multi-location yield trials for further evaluation and release for cultivation in target regions of India. 相似文献
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Yaping Xie Bin Wang Limin Wang Junyi Niu Wei Zhao Bin Yan Li Zhao Zhao Dang Wenjuan Li Yanni Qi Jianping Zhang 《中国油料作物学报(英文)》2019,(3):152-165
Crop yield is primarily seed-filling-limited in production system under field conditions.This study was aimed to determine whether seed filling traits of oil flax(Linum usitatissimum L.)could be controlled by phosphorus(P),nitrogen(N),and phosphorus and nitrogen(NP)supply.Effects on seed filling traits were investigated in 2 years including capsule diameter,capsule height,capsule dry matter(DM),seed DM per capsule,pericarp DM per capsule,protein content and oil content.DM translocation from pericarps to seed,translocation efficiency,and contribution of photoassimilates during seed filling period were also detected.In a randomized complete block design,cultivar'Longyaza 1'was grown under P(33 kg P/ha),N(75 kg N/ha),and NP(33 kg P/ha and 75 kg N/ha)along with a zerofertilizer(CK)treatment in 2013 and 2014.Results suggested that DM translocation efficiency and contribution efficiency increased to different extent due to P,N or NP application.At 42 DAA(days after anthesis),seed DM per capsule reached the greatest,while protein content and pericarp DM obtained the least level.However,the highest oil content was detected at 35 DAA.A significant positive linear relationship was observed between seed DM,capsule DM and DM translocation in both years.Protein content showed inconsistent relation with oil content.The results indicated that appropriate N and P management could be an effective approach to increase oil flax production. 相似文献
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Rice false smut disease, which is caused by the fungus Ustilaginoidea virens, is currently one of the most devastating rice fungal diseases in the world. Rice false smut disease not only causes severe yield loss and grain quality reduction, but also threatens food safety due to its production of mycotoxins. In this review, the most recent progresses regarding the life cycle, infection processes, genome and genetic diversity, pathogenic gene and disease resistance in rice were summarized in order to provide theoretical basis for the control of U. virens. We also proposed some future directions and key questions that need to be addressed for a better understanding of the molecular mechanism that leads to rice false smut disease and the prospects for sustainable control of rice false smut. 相似文献
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本刊讯11月26日,第十届广州国际茶文化节、2009中国(广州)国际茶业博览会在广州琶洲中洲商务展示中心隆重举行开幕式。原中共中央政治局委员、全国政协副主席杨汝岱,中华全国供销合作总 相似文献
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五月的安溪大地,蛰伏着一股巨大力量,来自全国各地的茶商云集,表面被春雨挡住步伐,但一坐下来就是满腹的茶经;我有幸成为其中一员,八年从事茶行业,让我越来越淡定,我想这是茶力量的觉醒,因而我若有所思…… 相似文献
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最近,有媒体报道2010年西湖龙井新茶价格将出现上涨,每斤将有200到1000元不等的涨幅,不少人看到新闻后惊呼这西湖龙井喝不起了。为此,本刊电话联系采访了浙江省茶叶产业协会秘书长胡迪钧,他对这样的报道表示吃惊,他说近几年西湖龙井新茶上市之初,除了个别企业 相似文献
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2008年11月,是华祥苑茗茶丰收的一个月。在第四届中国茶业经济年会上,华祥苑不但继续蝉联百强,董事长肖文华行业"投名状"被评选为2008中国茶叶行业年度经济人物:在产品上,华祥苑 相似文献
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Pilar Jimenez Patricia Cabrero José E. Basterrechea Jesús Tejero Damian Cordoba-Diaz Manuel Cordoba-Diaz Tomas Girbes 《Plant foods for human nutrition (Dordrecht, Netherlands)》2014,69(2):168-174
Dwarf elder (Sambucus ebulus L.) berries are rich in health-promoting phytochemicals such as polyphenols and anthocyanins, and display a significant antioxidant activity. They are also rich in two lectins (ebulin f and SELfd) that share amino acid sequence homology with the elderberry allergen Sam n1 present in Sambucus nigra pollen and fruits. Ebulin f displays toxicity by oral ingestion. This study was aimed at eliminating the toxicity of these lectins whilst having little or no effect on the antioxidant properties of dwarf elder berries. We thus investigated the potential effects of incubation in a boiling water bath of extracts from several parts of the plant on total polyphenol content, antioxidant activity, total anthocyanins, cyanidin-3-glycoside content, and the sensitivity of purified dwarf elder fruit lectins to a simulated gastric fluid. The study shows that five minutes of said heat treatment fully sensitized both lectins to pepsin digestion, whilst minimally reducing phenol and antioxidant as well as free radical scavenging activities to below 13 %. It proved possible to eliminate the potential risks derived from the presence of lectins in dwarf elder juices without any significant reduction in the content of the antioxidant compounds. Dwarf elder berries may thus be a valuable nutritional source. 相似文献
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红光和蓝光是植物进行光合作用和光形态建成的主要光质,不同植物对红光和蓝光光质配比的需求有所差异。本研究采用发光二极管(LED)辐射产生的不同光质,探究不同光质对珊瑚姜愈伤组织诱导、芽增殖及组培苗生长发育的影响。结果表明,在愈伤组织诱导阶段,黑暗和红光的条件更利于珊瑚姜愈伤组织的诱导和生长,二者没有显著性差异。不同光质下珊瑚姜愈伤组织诱导率从高到低依次为黑暗>红光>白光>蓝光、红蓝组合光,为节能省电,建议使用黑暗条件诱导珊瑚姜愈伤组织。在珊瑚姜芽增殖阶段,红蓝组合光下珊瑚姜芽增殖系数最高,红光次之。相比白光,红光会促进珊瑚姜组培苗长高,而蓝光使苗矮化。但红光条件下,幼苗生长状态较柔弱。红蓝组合光和白光条件下,幼苗较为健壮。因此,建议使用低耗能、低散热、寿命长的LED红蓝组合光替代普通白炽灯作为珊瑚姜芽增殖培养的光源。该研究结果为LED系统在珊瑚姜的规模化生产中的应用提供参考。 相似文献
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为了从细胞学角度鉴定忍冬科(Caprifoliaceae)接骨木属(Sambucus)2种植物蒴翟(Sambucus Chinensis L.)和接骨木(Sambucus willamsii H.),对安徽滁州地区蒴翟的染色体核型进行分析,并和接骨木进行比较.结果表明,蒴翟体细胞染色体数目为2n=34,染色体基数x=17,为二倍体物种.与接骨木(2n=2x=36)相比,存在染色体数目差异.其核型公式为k(2n)=34=14m+14am+6st,核型类型为2B型(接近3B型);最长与最短染色体长度比为2.07.臂比>2的染色体比为0.47.在系统进化程度上蒴翟较接骨木高级,这可能是草本蒴翟比木本接骨木具有更强生态适应性的细胞学证据之一. 相似文献
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Agnieszka Viapiana Marek Wesolowski 《Plant foods for human nutrition (Dordrecht, Netherlands)》2017,72(1):82-87
The aim of this work was to evaluate the antioxidant potential of teas prepared from twenty-four commercially available berries and flowers of Sambucus nigra L. in relation to their phenolic profile, as reflected by the most representative phenolic acids (caffeic, chlorogenic, p-coumaric, ferulic, gallic and syringic acids); flavonols (quercetin, kaempferol, myricetin and rutin); and total phenolic (TPC), phenolic acid (TAC) and flavonoid (TFC) contents. The infusions prepared from elderflowers contained more abundant phenolic compounds than the elderberry infusions. The TPC of these infusions ranged from 19.81 to 23.90 mg of gallic acid equivalents/g dry weight of sample (GAE/g DW) for elderberries and from 15.23 to 35.57 mg GAE/g DW for elderflowers, whereas the TFC ranged from 2.60 to 4.49 mg of rutin equivalents/g dry weight of sample (RUTE/g DW) in elderberry infusions and from 5.27 to 13.19 mg RUTE/g DW in elderflower infusions. Among the phenolic compounds quantified in this study, quercetin (2.07–9.48 mg/g DW) and myricetin (1.17–9.62 mg/g DW) had the highest concentrations in the teas prepared from berries and flowers, respectively. Moreover, the antioxidant potential of elder infusions assessed by 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical and ferric reducing antioxidant power (FRAP) assays revealed that the teas prepared from flowers had higher mean DPPH and FRAP activities than the teas prepared from berries. Therefore, elder beverages could be important dietary sources of natural antioxidants that contribute to the prevention of diseases caused by oxidative stress. 相似文献
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Joko Tri Wibowo Peni Ahmadi Siti Irma Rahmawati Asep Bayu Masteria Yunovilsa Putra Anake Kijjoa 《Marine drugs》2022,20(1)
Novel secondary metabolites from marine macroorganisms and marine-derived microorganisms have been intensively investigated in the last few decades. Several classes of compounds, especially indole alkaloids, have been a target for evaluating biological and pharmacological activities. As one of the most promising classes of compounds, indole alkaloids possess not only intriguing structural features but also a wide range of biological/pharmacological activities including antimicrobial, anti-inflammatory, anticancer, antidiabetic, and antiparasitic activities. This review reports the indole alkaloids isolated during the period of 2016–2021 and their relevant biological/pharmacological activities. The marine-derived indole alkaloids reported from 2016 to 2021 were collected from various scientific databases. A total of 186 indole alkaloids from various marine organisms including fungi, bacteria, sponges, bryozoans, mangroves, and algae, are described. Despite the described bioactivities, further evaluation including their mechanisms of action and biological targets is needed to determine which of these indole alkaloids are worth studying to obtain lead compounds for the development of new drugs. 相似文献
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选用5种常用草坪草(天堂草419、兰引3号、假俭草、中华结缕草和海滨雀稗)进行充分和限制灌水的盆栽试验,通过测定各草坪草蒸散量的变化,得出草坪草在一个生长季内的耗水量及其需水规律。结果表明:(1)长沙地区供试草坪草的水分蒸散主要集中在6~9月,特别是7月和8月的蒸散量最大,充分灌水条件下的蒸散量显著高于限制灌水处理;(2)不同草坪草6~10月的蒸散量不同,天堂草419为931.740~773.502mm,兰引3号为1023.540843.811mm,假俭草为951.461~800.247mm,中华结缕草为1028.889~831.557mm,海滨雀稗为1150.144~937.968mm,在限制和充分灌水条件下,蒸散量的排列顺序均为海滨雀稗〉兰引3号〉中华结缕草〉假俭草〉天堂草419;(3)1d中海滨雀稗蒸散量变化曲线呈单峰型,其余4种供试坪草呈双峰型,1d内蒸散量主要集中在11:00~15:00之间。 相似文献
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目的:建立测定抱茎苦荬菜药材中总黄酮和腺苷的方法。方法:采用UV—VIS法测定总黄酮的含量。采用RP—HPLC法测定腺苷的含量,色谱条件为:XDB—C18(150mm×4.6mm,5μm)色谱柱,以乙腈-水(体积比为6:94)为流动相,检测波长为260nm,流速为1ml/min^-1。结果:腺苷进样量在0.072—3.6μg范围内线性关系良好(r=0.999),平均回收率为100.3%,相对标准差(RSD)为1.35%。结论:方法准确、可靠,适合测定抱茎苦荬菜药材中总黄酮和腺苷的含量。 相似文献