The Open Horticulture Journal最新文献_第2页

Effect of Different Strength of Medium on Organogenesis, Phenolic Accumulation and Antioxidant Activity of Spearmint (Mentha spicata l.) 不同培养基强度对绿薄荷器官发生、酚积累及抗氧化活性的影响

The Open Horticulture Journal Pub Date : 2010-10-21 DOI: 10.2174/1874840601003010031

D. Fadel, S. Kintzios, A. Economou, G. Moschopoulou, H. Constantinidou

引用次数: 45

Growth Analysis and Responses of Cowpea (Vigna Sinensis (L.) Savi Ex Hassk.) and Redroot Pigweed (Amaranthus retroflexus L.), Grown in Pure and Mixed Stands, to Density and Water Stresses 豇豆(Vigna Sinensis (L.))的生长分析及响应(Savi Ex Hassk.)和赤根藜(Amaranthus retroflexus L.)，生长在纯和混合林分，对密度和水分胁迫

The Open Horticulture Journal Pub Date : 2010-08-17 DOI: 10.2174/1874840601003010021

J. Qasem, K. N. Biftu

{"title":"Growth Analysis and Responses of Cowpea (Vigna Sinensis (L.) Savi Ex Hassk.) and Redroot Pigweed (Amaranthus retroflexus L.), Grown in Pure and Mixed Stands, to Density and Water Stresses","authors":"J. Qasem, K. N. Biftu","doi":"10.2174/1874840601003010021","DOIUrl":"https://doi.org/10.2174/1874840601003010021","url":null,"abstract":"The effects of water stress and planting density on the competitive relationships, yield performance, and dynamics in canopy dominance of cowpea (Vigna sinensis (L.) Savi ex Hassk) and redroot pigweed (Amaranthus retroflexus L.) grown in pure and mixed stands were investigated under glasshouse and field conditions. Results showed that water stress at early growth stages reduced plant height, shoot dry weight, leaf area, leaf dry weight and lowered pod dry weight of cowpea, and inflorescence dry weight of A. retroflexus. The effect on both species was more pronounced at high planting densities as a result of severe intraspecific competition. In pure stands, cowpea was affected more than A. retroflexus and the effect was more pronounced on reproductive organs development. Growth analysis of both species grown in pure stands for different periods indicated that leaf area was the most descriptive variable in shoot dry weight and total dry weight of both species at early growth stage. A. retroflexus grew at a faster rate with higher net assimilation rate per unit leaf area and allocated more resources to leaves and roots than did cowpea. Results showed that A. retroflexus was stronger competitor than cowpea. Competition reduced growth and competitive abilities of both species mainly by reducing leaf area early in growth but the effect was more pronounced on cowpea. Keyword: A. retroflexus, Vigna sinensis, development, inter-specific competition, intra-specific competition, stress responses.","PeriodicalId":166627,"journal":{"name":"The Open Horticulture Journal","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116287738","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: 17

Tree Growth Stage and Environment After Pathogen Inoculation Alters Susceptibility of Pear Trees to Phytophthora Canker 接种病原菌后树木生长阶段和环境改变梨树对腐霉病的敏感性

The Open Horticulture Journal Pub Date : 2010-04-29 DOI: 10.2174/1874840601003010011

S. Laywisadkul, L. Fuchigami, C. Scagel, R. Linderman

{"title":"Tree Growth Stage and Environment After Pathogen Inoculation Alters Susceptibility of Pear Trees to Phytophthora Canker","authors":"S. Laywisadkul, L. Fuchigami, C. Scagel, R. Linderman","doi":"10.2174/1874840601003010011","DOIUrl":"https://doi.org/10.2174/1874840601003010011","url":null,"abstract":"We investigated whether pear (Pyrus communis L. OHF97) tree growth stage, nitrogen (N) status, wound age, and infection environment influences susceptibility to Phytophthora syringae Klebahn. Actively growing trees were sus- ceptible to the pathogen when inoculated before terminal budset and cooler temperatures increased disease severity. In the autumn, during early stages of dormancy development after budset there was no relationship between temperature after inoculation and susceptibility and as trees became more dormant a negative relationship developed between temperature and susceptibility. Altering tree N status in the autumn after budset by spraying leaves with urea had no influence on sus- ceptibility, regardless of environmental conditions after inoculation. Lesions developed when fresh wounds (0 d to 1 d old) were inoculated after budset, but as wounds aged they were less susceptible to infection. These results suggest a combination of tree growth stage when inoculated with the pathogen and environmental conditions afterward play impor- tant roles in disease development. Differences in susceptibility may be a direct result of temperature on pathogen activity or an indirect effect of temperature on tree metabolic activity. Differences in tree susceptibility related to dormancy devel- opment may be related to stem N status or the ability of trees to produce a barrier to infection after stems are wounded. Surface wounds inflicted during handling after budset may serve as infection locations for P syringae; however the length of time between wound formation and exposure to the pathogen dictates whether infection will occur when trees are in the early stages of dormancy development.","PeriodicalId":166627,"journal":{"name":"The Open Horticulture Journal","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126518075","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: 1

Biological Control of Crown Gall on Peach and Cherry Rootstock Colt by Native Agrobacterium radiobacter Isolates 乡土放射农杆菌对桃木和樱桃砧木幼苗冠瘿病的生物防治

The Open Horticulture Journal Pub Date : 2010-02-11 DOI: 10.2174/1874840601003010001

A. Gupta, K. Khosla, S. Bhardwaj, Aman Thakur, S. Devi, R. Jarial, C. Sharma, K. Singh, D. Srivastava, R. Lal

{"title":"Biological Control of Crown Gall on Peach and Cherry Rootstock Colt by Native Agrobacterium radiobacter Isolates","authors":"A. Gupta, K. Khosla, S. Bhardwaj, Aman Thakur, S. Devi, R. Jarial, C. Sharma, K. Singh, D. Srivastava, R. Lal","doi":"10.2174/1874840601003010001","DOIUrl":"https://doi.org/10.2174/1874840601003010001","url":null,"abstract":"Crown gall caused by Agrobacterium tumefaciens is the major limiting factor in raising healthy stone fruit plants in nurseries. The incidence of crown gall varies from 4 to 97.5 per cent at different locations resulting in out right rejection of an average of 30 per cent stone fruit plants in nurseries. Agrobacterium radiobacter strain K-84 has been re- ported to provide nearly complete control of this disease, however this strain is not available in India. Therefore, the pre- sent work was aimed to evaluate the antagonistic activity of twelve native A. radiobacter isolates from peach cv. Redhaven, July Elberta and cherry cv. Stella rhizosphere soil against A. tumefaciens. Agrocin production was detected in three isolates of A. radiobacter UHFBA-8, UHFBA-11 and UHFBA-12, and in cross inoculation test against A. tumefa- ciens, all the three isolates completely inhibited gall formation into tomato stems, whereas inoculation of pAg - variants of UHFBA-8 and UHFBA-11 resulted in 87.6 per cent less number of galls per wound and 96 per cent reduced gall size into inoculated tomato stems. Root dip treatment of peach plants with isolate UHFBA-11 resulted in 5.37 per cent incidence of crown gall in contrast to more than 54 per cent galled plants that had not received the treatment. In cherry rootstock Colt, isolate UHFBA-8 as root dip minimized crown gall incidence to 22.22 per cent as compared to 71.11 per cent incidence in untreated plants. Rifampicin resistant mutants of A. radiobacter isolate viz., UHFBA-8 and 11 efficiently colonized the root system of peach and Colt and their populations remained in the tissues of treated plants throughout the growing sea- son. The data suggest that other mechanisms such as efficient colonization of root system, binding and physical blockage of infection sites are involved in biological control by A. radiobacter in addition to production of agrocin.","PeriodicalId":166627,"journal":{"name":"The Open Horticulture Journal","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132601216","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: 18

Salt tolerance and screening for genetic changes in rice mutants after gamma irradiation using RAPD and microsatellite (RAMP) markers. 利用RAPD和微卫星(RAMP)标记筛选辐照后水稻突变体的耐盐性和遗传变化。

The Open Horticulture Journal Pub Date : 2009-11-13 DOI: 10.2174/1874840600902010062

T. M. L. Hoang, L. D. Filippis, X. Le

{"title":"Salt tolerance and screening for genetic changes in rice mutants after gamma irradiation using RAPD and microsatellite (RAMP) markers.","authors":"T. M. L. Hoang, L. D. Filippis, X. Le","doi":"10.2174/1874840600902010062","DOIUrl":"https://doi.org/10.2174/1874840600902010062","url":null,"abstract":"Two Vietnamese rice mutants (M2-2 and M2-4 - second generation line 2 and line 4 respectively), induced by gamma irradiation were examined and compared to their parent (TT), and the Australian cultivar Amaroo (Am) for salt tolerance and genomic differences. Seedlings in tissue culture provided high yields and good quality DNA, espe- cially with young shoots. Changes in DNA of the mutants in comparison to TT and Am were successfully assessed using RAPD-PCR (random amplified polymorphic DNA-polymerase chain reaction) and RAMP-PCR (random ampli- fied microsatellite polymorphism-polymerase chain reaction) molecular marker techniques. RAMP-PCR was better than RAPD-PCR at disclosing genetic changes between closely related individuals, and only RAMP-PCR was able to detect polymorphic bands between the two mutants. A measure of heterozygocity and genetic differentiation, the G- statistic demonstrated that comparisons between Am and TT, M2-2 or M2-4 showed moderate genetic differentiation, but comparisons between TT and M2-2 or M2-4 showed low genetic differentiation. Percentage polymorphism be- tween TT, M2-2, M2-4 and Am detected by RAPD-PCR were similar to those detected by RAMP-PCR (about 10%). DNA bands that were polymorphic between the two mutant lines were sequenced, two bands mapped on numerous chromosomes of rice, while two other bands mapped on one or two chromosomes, and these DNA bands on the whole coded for regulatory genes. The results showed that especially RAMP-PCR is a versatile, sensitive and cost ef- fective method for measuring genomic differences between closely related plants.","PeriodicalId":166627,"journal":{"name":"The Open Horticulture Journal","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133929376","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: 7

Microsatellite Markers to Complement Distinctness, Uniformity, Stability Testing of Brassica chinensis (Xiao Baicai) Varieties 利用微卫星标记补充小白菜品种的独特性、均匀性和稳定性试验

The Open Horticulture Journal Pub Date : 2009-04-24 DOI: 10.2174/1874840600902010054

G. Yim, D. Ding, C. Wang, W. Leong, Y. Hong

{"title":"Microsatellite Markers to Complement Distinctness, Uniformity, Stability Testing of Brassica chinensis (Xiao Baicai) Varieties","authors":"G. Yim, D. Ding, C. Wang, W. Leong, Y. Hong","doi":"10.2174/1874840600902010054","DOIUrl":"https://doi.org/10.2174/1874840600902010054","url":null,"abstract":"Brassica chinensis varieties are mostly consumed as vegetables. In order to assess utility of microsatellite markers for testing distinctness, uniformity and stability of B. chinensis varieties, we used nine polymorphic microsatellite marker loci (with a total of 131 alleles) to evaluate four open pollinated and four hybrid varieties of B. chinensis. Each va- riety was represented by 48 randomly sampled individuals from a population of 150. Morphological evaluations were also conducted to the same samples. Compared with morphological evaluations, the microsatellite analysis provided a higher degree of separation and reflected greater uniformity for the three hybrid varieties by cluster analysis, Principal Coordi- nates Analysis (PCA) and assignment test. Average pair-wise Jaccard similarities and statistical tests by AMOVA (analy- sis of molecular variance) also suggested higher levels of intra-variety uniformity. It was also noted that there was no sig- nificant correlation between the genetic and morphological distance matrices (Mantel test). We conclude that microsatel- lite genotyping can be a valuable tool to complement morphological assessment of Brassica vegetable varieties for dis- tinctiveness and uniformity.","PeriodicalId":166627,"journal":{"name":"The Open Horticulture Journal","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121429462","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: 9

Influence of a menadione derivative on banana Panama disease development and yield enhancement. 甲萘醌衍生物对香蕉巴拿马病发育及增产的影响。

The Open Horticulture Journal Pub Date : 2009-04-24 DOI: 10.2174/1874840600902010049

M. Fernández-Falcón, C. Álvarez, R. Gorrín, M. Hernández, A. A. Borges

引用次数: 3

In Vitro Micrografting of Mature Carob Tree (Ceratonia siliqua L.) 成熟角豆树(Ceratonia siliqua L.)的离体显微嫁接

The Open Horticulture Journal Pub Date : 2009-04-10 DOI: 10.2174/1874840600902010044

Touria Hsina, N. E. Mtili

引用次数: 10

New Insights into the Anthracnose Resistance of Common Bean Landrace G 2333 菜豆地方品种g2333抗炭疽病的新认识

The Open Horticulture Journal Pub Date : 2009-03-20 DOI: 10.2174/1874840600902010029

Veronica A. Vallejo, J. Kelly

引用次数: 35

Growth of Six Begonia Species Under Shading 6种海棠在遮荫条件下的生长

The Open Horticulture Journal Pub Date : 2009-03-18 DOI: 10.2174/1874840600902010022

K. Jeong, C. Pasian, M. McMahon, D. Tay

{"title":"Growth of Six Begonia Species Under Shading","authors":"K. Jeong, C. Pasian, M. McMahon, D. Tay","doi":"10.2174/1874840600902010022","DOIUrl":"https://doi.org/10.2174/1874840600902010022","url":null,"abstract":"The Ornamental Plant Germplasm Center (OPGC) conserves begonia species. Limited cultural information is available concerning the effect of light intensity on the growth of begonia species other than cultivated hybrids in green- houses. The objective of this study was to evaluate the response of begonia species to different shade levels and to identify light intensities that favor the production and maintenance of quality begonia plants in greenhouses during summer. Plants of six begonia species, (Begonia albopicta, B. cucullata var. cucullata, B. echinosepala var. elongatifolia, B. holtonis, B. foliosa var. miniata, and B. 'Fuchsifoliosa' (B. fuchsioides x B. foliosa)), were grown in a greenhouse in Columbus, OH (lat. 40 N, long. 82.53 W) for 12 weeks (starting 23 July) either in full light (1000 - 1800 μmol·m -2 ·s -1 ) or shade-cloth tents providing three levels of shade (41, 62, and 76% of full sunlight in the greenhouse). Each plant was evaluated for the number of inflorescences, leaf greenness (SPAD readings), shoot length, leaf area, and shoot dry weight. Visual observa- tions of plant quality (chlorosis, necrosis, sunburn, deformed leaves, and plant mortality) were also recorded. Shade per- centage for optimal growth and quality of B. albopicta, B. echinosepala var. elongatifolia, B. holtonis, B. foliosa var. miniata, and B. 'Fuchsifoliosa' plants was 62% and 76 % for B. cucullata var. cucullata plants.","PeriodicalId":166627,"journal":{"name":"The Open Horticulture Journal","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128589120","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: 13