ISRN Agronomy最新文献_第6页

Yield, Yield Distribution, and Forage Quality of Warm-Season Perennial Grasses Grown for Pasture or Biofuel in the Southern Great Plains 南方大平原暖季多年生牧草的产量、分布和饲料质量

ISRN Agronomy Pub Date : 2012-02-13 DOI: 10.5402/2012/607476

J. K. Rogers, F. Motal, J. Mosali

引用次数: 8

Four Common Insects of Durum Wheat Cultivations in Western Macedonia, Greece 希腊马其顿西部硬粒小麦栽培的四种常见昆虫

ISRN Agronomy Pub Date : 2012-02-09 DOI: 10.5402/2012/781012

.. P.N.Deligeorgidis, .. N.P.Deligeorgidis, .. C.G.Ipsilandis, .. A.Vardiabasis, M. Vayopoulou, .. L.Giakalis, G. Sidiropoulos

{"title":"Four Common Insects of Durum Wheat Cultivations in Western Macedonia, Greece","authors":".. P.N.Deligeorgidis, .. N.P.Deligeorgidis, .. C.G.Ipsilandis, .. A.Vardiabasis, M. Vayopoulou, .. L.Giakalis, G. Sidiropoulos","doi":"10.5402/2012/781012","DOIUrl":"https://doi.org/10.5402/2012/781012","url":null,"abstract":"The purpose of this study was to monitor population fluctuations of various species of Diptera during the growing season of durum wheat, in years 2009 and 2010. The most abundant Hymenoptera species was also included in the study as a control species. The species studied were Cephus pygmaeus, Haplodiplosis marginata, Mayetiola destructor, and Chlorops pumilionis. Samplings of insects were taken in eight periods to cover the late stages of durum wheat. Measurements were made every about 100 m in the field, with five wheat plants per sample, from 10 different places. Total insect individuals on each wheat plant were counted. Maximum number of individuals per plant reached 6-7 insects, except for C. pumilionis which showed only 3–5 individuals. Year X sampling period interaction was also found in some cases, indicating different populations' fluctuations across years. The relatively low populations found in our study may indicate low level of danger on crop production, but the unstable populations of the most multitudinous insect species H. marginata and C. pygmaeus may cover a possible danger, especially for species H. marginata which, in specific years, can be found in great numbers causing severe damages on wheat crops. Combination of pests may result in significant damages and a total recording procedure must be practiced.","PeriodicalId":413640,"journal":{"name":"ISRN Agronomy","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127675284","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Phenological Development-Yield Relationships in Durum Wheat Cultivars under Late-Season High-Temperature Stress in a Semiarid Environment 半干旱环境下冬末高温胁迫下硬粒小麦品种物候发育与产量关系

ISRN Agronomy Pub Date : 2012-01-12 DOI: 10.5402/2012/456856

G. Al-Karaki

{"title":"Phenological Development-Yield Relationships in Durum Wheat Cultivars under Late-Season High-Temperature Stress in a Semiarid Environment","authors":"G. Al-Karaki","doi":"10.5402/2012/456856","DOIUrl":"https://doi.org/10.5402/2012/456856","url":null,"abstract":"A field study was carried out under rainfed conditions during the growing season 2008/2009 in Maru (Northern Jordan) to evaluate the phenological variation using heat-accumulated system and its relation with yield in sixteen durum wheat genotypes. Grain yield was negatively correlated with growing degree days (GDDs) to maturity, while positively correlated with GDD to heading. Increasing GDD to heading resulted in higher grain yield, while increasing grain fill duration had little effect. Rapid grain fill rate was positively correlated with grain weight and negatively correlated with grain fill duration. Waha-1, Omrabi-5, and Massara-1 genotypes had the highest grain yields among genotypes studied. These three genotypes tended to have relatively longer preheading periods with early maturity. The results of this study indicate that Mediterranean-adapted cultivars would have long preheading periods, followed by short periods and high rates of grain fill and mature early to avoid late-season drought and high-temperature stress and to attain high yields. Therefore, it is recommended for the development of high yielding wheat cultivars adapted to semiarid environments to select the genotypes with early maturity and a relatively long time to heading.","PeriodicalId":413640,"journal":{"name":"ISRN Agronomy","volume":"31 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-01-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120811763","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 54

In Vitro Effects of Brassinosteroids on the Growth and Antioxidant Enzyme Activities in Groundnut 油菜素内酯对花生生长和抗氧化酶活性的影响

ISRN Agronomy Pub Date : 1900-01-01 DOI: 10.5402/2012/356485

A. Verma, C. Malik, V. Gupta

{"title":"In Vitro Effects of Brassinosteroids on the Growth and Antioxidant Enzyme Activities in Groundnut","authors":"A. Verma, C. Malik, V. Gupta","doi":"10.5402/2012/356485","DOIUrl":"https://doi.org/10.5402/2012/356485","url":null,"abstract":"This paper deals with the in vitro effects of brassinosteroids (BRs) on growth in the form of multiple shoots, chlorophyll content, Hill reaction activity (HRA), activities of catalase (CAT), peroxidase (POX), polyphenol oxidase (PPX), and ascorbate peroxidase (APX) in Arachis hypogaea L. genotypes (M-13 and PBS24030). In vitro impact of BR on shoot multiplication potential was found to be the best at 1 mL L−1 with BA (3 mg L−1) in both the cultivars. Flowering was observed in PBS24030 on the medium containing 2.0 mL L−1 BR with 3 mg L−1 BA. Rhizogenesis was noticed in the presence of BR alone. Total chlorophyll content and HRA were highest at 2.0 mL L−1 with BA in M-13 and 1.0 mL L−1 with BA in PBS24030. Antioxidant enzyme activities were increased in the presence of BR whether alone or in combination with BA in both the cultivars. However, progressive decline was observed in case of MDA content. The results obtained in the study clearly indicated not only the in vitro establishment of groundnut cultivars in the presence of BR alone and in combination with BA but also its effect on various growth promotory physiological parameters.","PeriodicalId":413640,"journal":{"name":"ISRN Agronomy","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131568873","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 36

Evaluation of In-Season Nitrogen Management for Summer Maize in North Central China 华北地区夏玉米季节氮素管理评价

ISRN Agronomy Pub Date : 1900-01-01 DOI: 10.5402/2012/294514

Shicheng Zhao, P. He, Zhimin Sha, S. Xing, K.-J. Li

引用次数: 4

Intercropping Sorghum (Sorghum bicolor L.) and Cowpea (Vigna unguiculata L.): Effect of Bradyrhizobium Inoculation and Fertilization on Minerals Composition of Sorghum Seeds 高粱与豇豆间作:接种和施肥缓生根瘤菌对高粱种子矿物质组成的影响

ISRN Agronomy Pub Date : 1900-01-01 DOI: 10.5402/2012/356183

Ekhlas M. Musa, E. Elsheikh, I. M. Ahmed, E. E. Babiker

引用次数: 22

Callus Induction, Proliferation, and Plantlets Regeneration of Two Bread Wheat (Triticum aestivum L.) Genotypes under Saline and Heat Stress Conditions 两种面包小麦愈伤组织诱导、增殖及植株再生生理盐水和热应激条件下的基因型

ISRN Agronomy Pub Date : 1900-01-01 DOI: 10.5402/2012/367851

Laid Benderradji, F. Brini, Kamel Kellou, N. Ykhlef, A. Djekoun, K. Masmoudi, H. Bouzerzour

{"title":"Callus Induction, Proliferation, and Plantlets Regeneration of Two Bread Wheat (Triticum aestivum L.) Genotypes under Saline and Heat Stress Conditions","authors":"Laid Benderradji, F. Brini, Kamel Kellou, N. Ykhlef, A. Djekoun, K. Masmoudi, H. Bouzerzour","doi":"10.5402/2012/367851","DOIUrl":"https://doi.org/10.5402/2012/367851","url":null,"abstract":"Response of two genotypes of bread wheat (Triticum aestivum), Mahon-Demias (MD) and Hidhab (HD1220), to mature embryo culture, callus production, and in vitro salt and heat tolerance was evaluated. For assessment of genotypes to salt and heat tolerance, growing morphogenic calli were exposed to different concentrations of NaCl (0, 5, 10, and 15 g·L−1) and under different thermal stress intensities (25, 30, 35, and 40°C). Comparison of the two genotypes was reported for callus induction efficiency from mature embryo. While, for salt and heat tolerance, the proliferation efficiency, embryonic efficiency, and regeneration efficiency were used. The results show significant medium and genotype effects for the embryogenesis capacity of calluses induction and plantlets regeneration under saline and thermal stresses. Mahon-Demias showed good callus induction and ability to proliferate and regenerate seedling under heat and salt stress conditions compared to Hidhab. No sizeable differences were observed between the two genotypes at higher salt stress rates. This study will serve as a base line for in vitro screening of several elite wheat cultivars for their ability to induce callus and regenerate plants from mature embryos, and to start selection for tolerance to salinity.","PeriodicalId":413640,"journal":{"name":"ISRN Agronomy","volume":"95 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121709247","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 58

Fruit Quality Attributes of Sour Cherry Cultivars 酸樱桃品种果实品质特征

ISRN Agronomy Pub Date : 1900-01-01 DOI: 10.5402/2012/593981

T. Milošević, N. Milosevic

引用次数: 12