The Open Horticulture Journal最新文献_第3页

Biological and Economic Efficiency of Radish (Raphanus sativus L.)Intercropped with Vegetable Amaranthus (Amaranthus tricolor L.) 萝卜的生物学和经济效益间作蔬菜苋菜(Amaranthus tricolor L.)

The Open Horticulture Journal Pub Date : 2009-03-06 DOI: 10.2174/1874840600902010017

T. Seran, I. Brintha

{"title":"Biological and Economic Efficiency of Radish (Raphanus sativus L.)Intercropped with Vegetable Amaranthus (Amaranthus tricolor L.)","authors":"T. Seran, I. Brintha","doi":"10.2174/1874840600902010017","DOIUrl":"https://doi.org/10.2174/1874840600902010017","url":null,"abstract":"A field experiment was conducted at the Agronomy farm, Eastern University, Sri Lanka to study the biological and economic efficiency of radish (Raphanus sativus L.) intercropped with vegetable amaranthus (Amaranthus tricolor L.). Treatments were radish as sole crop (T1), vegetable amaranthus as sole crop (T2), 20/50 cm paired row radish with three (T3) or four (T4) rows of vegetable amaranthus in between paired rows and 25/40 cm paired row radish with three (T5) or two (T6) rows of vegetable amaranthus in between paired rows. The results showed that, there was no significant difference (P>0.05) in area time equivalency ratio (ATER) among intercropping treatments and significant differences (P<0.05) were obtained in the land equivalent ratio (LER) and crop performance ratio (CPR). LER (1.31) and CPR (1.71) were superior in T3 and T4 respectively. In case of economic indices, gross return was significantly differed (P<0.01) among treatments. It was high in T3 followed by T4. Intercropping system recorded significantly high (P<0.01) cost of cultivation over intercropping system. Among intercropping, T4 resulted maximum net return, monetary equivalent ratio, cost benefit ratio and per day return over other intercropping treatments and sole crops. This experiment revealed that T4 would be the most efficient system in both biological and economical point of view.","PeriodicalId":166627,"journal":{"name":"The Open Horticulture Journal","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127307719","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

Integrated Effects of Root-Zone Temperatures and Phosphorus Levels on Aeroponically-Grown Lettuce (Lactuca sativa L.) in the Tropics 根区温度和磷水平对热带气培莴苣的综合影响

The Open Horticulture Journal Pub Date : 2009-03-06 DOI: 10.2174/1874840600902010006

H. Luo, S. K. Lee, J. He

{"title":"Integrated Effects of Root-Zone Temperatures and Phosphorus Levels on Aeroponically-Grown Lettuce (Lactuca sativa L.) in the Tropics","authors":"H. Luo, S. K. Lee, J. He","doi":"10.2174/1874840600902010006","DOIUrl":"https://doi.org/10.2174/1874840600902010006","url":null,"abstract":"In this study, butterhead lettuce (Lactuca sativa L. cv. Baby Butter) plants were grown at three root-zone tem- peratures (RZTs): 25 o C, 30 o C and ambient-RZT (A-RZT) ranging from 26 o C-42 o C while their shoots were maintained at hot ambient temperature ranging from 26 o C-42 o C. Three phosphorus (P) concentrations: -25% P (minus P, 23.25ppm), control (31.00ppm) and +25% P (plus P, 38.75ppm) were supplied to the plants at each RZT using Netherlands Standard Nutrient Solution. Interactions between RZT and P concentrations on productivity, root morphology, maximum photosyn- thetic O2 evolution (Pmax), P uptake and its partitioning between shoot and root were studied. Lettuce plants grown with the plus P concentration at 25 o C-RZT had the highest productivity, highest Pmax, highest shoot and root P concentrations. However, all the root morphological parameters studied were the greatest in plants grown with the minus P at 25 o C-RZT. Higher P concentration in the solution and 25 o C-RZT resulted in higher portion of the absorbed P partitioned to the shoots. Integrated effects of RZT and P concentration on the productivity, root morphology, photosynthesis and P uptake were discussed.","PeriodicalId":166627,"journal":{"name":"The Open Horticulture Journal","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121390957","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: 12

Variation in the essential oils in different leaves of basil (Ocimum basilicum L.) at day time. 罗勒(Ocimum basilicum L.)不同叶子精油在白天的变化。

The Open Horticulture Journal Pub Date : 2009-03-06 DOI: 10.2174/1874840600902010013

X. Chang, P. Alderson, C. Wright

引用次数: 18

Chilling injury of sweet potato shoots reduced by prior incubation of H2O2 and NaCl. H2O2和NaCl预处理可降低甘薯幼芽的冷害。

The Open Horticulture Journal Pub Date : 2009-03-06 DOI: 10.2174/1874840600902010001

W. C. Lin, G. Block

{"title":"Chilling injury of sweet potato shoots reduced by prior incubation of H2O2 and NaCl.","authors":"W. C. Lin, G. Block","doi":"10.2174/1874840600902010001","DOIUrl":"https://doi.org/10.2174/1874840600902010001","url":null,"abstract":"Excised shoot tips of sweet potato (Ipomoea babatas L.) were incubated in H2O2 or NaCl aqueous solution for 24h or 48h prior to a 3-day chilling at 2.5°C. Severity of chilling injury was visually observed during a post-chilling 7-day recovery at 21°C, and scored at 0 to 5 (none to most severe injury). In the first experiment, when cv. Purple (PUR) sweet potato shoots were subjected to 3-day chilling at 2.5°C, a 48h pre-treatment of 150 mM H2O2 under 16h photoperiod re- duced chilling injury, but H2O2 showed no effect under 8h photoperiod. An increase of Oxygen Radical Absorbance Ca- pacity (ORAC) occurred two days after recovery at room temperature, and such increase in ORAC was negatively corre- lated with the severity of chilling injury symptoms observed after seven days at room temperature, indicating the possible protective nature of antioxidants. Because H2O2-reduced chilling injury occurred only on those pre-treated with 16h pho- toperiod, 16h was employed in subsequent NaCl experiments. In the second experiment, 4 cvs were used: Ace of Spades (ACE), B18, Purple (PUR), and Toka Toka Gold (TTG). Each cv formed a 3 x 2 factorial experiment: NaCl (0 mM, 200 mM or 400 mM) and incubation duration (24h or 48h). The effects of NaCl depended on cultivar (cv). NaCl at 200mM reduced chilling injury more for ACE than B18 and PUR, but NaCl increased the injury of TTG. The NaCl effects also depended on incubation duration (24h or 48h). Across 4 cvs the most beneficial NaCl treatment was 200 mM NaCl for 24h. In view of these results, both pre-treatments of H2O2 and NaCl reduced chilling injury of sweet potato shoots, sug- gesting that moderate stress imposed as a pre-treatment increased plant tolerance to subsequent chilling under specific conditions.","PeriodicalId":166627,"journal":{"name":"The Open Horticulture Journal","volume":"39 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134260709","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: 4

Regulating Ripening of ‘Bartlett’ Pears Using Preharvest Plus PostharvestAminoethoxyvinylglycine (AVG) 采前加采后氨基酸乙氧基乙烯基甘氨酸(AVG)调控“巴特利特”梨的成熟

The Open Horticulture Journal Pub Date : 2008-11-21 DOI: 10.2174/1874840600801010021

E. Curry

{"title":"Regulating Ripening of ‘Bartlett’ Pears Using Preharvest Plus PostharvestAminoethoxyvinylglycine (AVG)","authors":"E. Curry","doi":"10.2174/1874840600801010021","DOIUrl":"https://doi.org/10.2174/1874840600801010021","url":null,"abstract":"In many deciduous fruit growing regions of the world, because of such factors as lack of chilling hours during winter followed by protracted anthesis, variation in fruit maturity and ripening uniformity of 'Bartlett' (Pyrus Communis) pears is troublesome. Such variability makes timely harvest difficult, especially when labor is insufficient. Use of ReTain ® (aminoethoxyvinylglycine, AVG, Valent Bioscience, Walnut Creek, CA) applied 4 weeks before harvest has mitigated this somewhat by delaying maturity development in treated blocks, thereby providing multiple harvest windows. To fur- ther regulate ripening of ReTain ® -treated 'Bartlett' pears in cold storage, fruit were treated immediately after harvest by dipping fruit in aqueous solutions containing AVG at 0, 66, 132 or 264 mg￻ l -1 and then kept in regular storage at -1 oC. In- ternal ethylene concentration of individual fruit was measured at harvest and monthly thereafter for 4 months. During the first 3 months in storage, ethylene production was well correlated with total (foliar plus dip) AVG applied. Treating 'Bartlett' pears after harvest with AVG appears more efficacious in reducing ripening variability during regular storage such that subsequent increase in ethylene is both consistent and predictable.","PeriodicalId":166627,"journal":{"name":"The Open Horticulture Journal","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114632115","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

Progress in Plant Polyploidization Based on Antimicrotubular Drugs 基于抗小管药物的植物多倍体研究进展

The Open Horticulture Journal Pub Date : 2008-10-20 DOI: 10.2174/1874840600801010015

A. Yemets, Y. Blume

引用次数: 35

Changes in Enzyme Activities During Postharvest Deterioration of GreenAsparagus Spears 绿芦笋采后变质过程中酶活性的变化

The Open Horticulture Journal Pub Date : 2008-10-20 DOI: 10.2174/1874840600801010001

P. Bhowmik, S. Basu, A. Alam

引用次数: 1

Molecular Identification of Microbial Communities in the Recycled Nutrient Solution of a Tomato Glasshouse Soil-Less Culture 番茄温室无土栽培循环营养液中微生物群落的分子鉴定

The Open Horticulture Journal Pub Date : 2008-10-20 DOI: 10.2174/1874840600801010007

G. Calmin, G. Dennler, L. Belbahri, A. Wigger, F. Lefort

{"title":"Molecular Identification of Microbial Communities in the Recycled Nutrient Solution of a Tomato Glasshouse Soil-Less Culture","authors":"G. Calmin, G. Dennler, L. Belbahri, A. Wigger, F. Lefort","doi":"10.2174/1874840600801010007","DOIUrl":"https://doi.org/10.2174/1874840600801010007","url":null,"abstract":"This study aimed to assess microbial community diversity in recycled nutrient solutions used in soil-less glass- house cultivation of tomato. One hundred bacterial strains, twenty oomycetes and 6 fungi were isolated and identified through genomic DNA isolation, PCR amplification of the ribosomal DNA region and database interrogations. Similari- ties of ITS regions with known species ranged from 95% to 100%. This artificial ecosystem was shown to be microbio- logically diverse, since recovered isolate were close to 35 bacterial species, 11 oomycete species and 3 fungal species. Bacteria belonged almost exclusively to � -Proteobacteria and Firmicutes, with most represented genera being Bacillus, Acinetobacter, Klebsiella and Serratia. A few bacterial sequences grouped with clones similar to plant and human patho- gens, while other isolates could be protective bacteria such as Pseudomonas fluorescens. Oomycetes isolated mostly be- longed to the genus Pythium (19 isolates) and were phylogenetically related to common cosmopolitan soil inhabitants or phytopathogenic Pythium species. The six fungal isolates were in 2 genera, Rhizopus and Caesia; Rhizopus isolates were closely related to the post harvest pathogen Rhizopus stolonifer. This original work adds to the efforts of assessing micro- organism diversity in recycled nutrient solutions commonly used in glasshouse vegetable production; microbial diversity was high and included potential plant pathogens. This study demonstrated the existence of a wide cultivable microbial community in the nutrient solution before recycling and recirculation and supported the necessity for disinfecting nutrient solutions used in soil-less cultivation systems, during the recycling process, in order to ensure crop sanitation and avoid- ing plant disease spreading.","PeriodicalId":166627,"journal":{"name":"The Open Horticulture Journal","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116783910","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: 3