G. P. Ndjouondo, S. Dibong, Fotsop Oscar Wamba, V. D. Taffouo
{"title":"Growth, Productivity and Some Physico-chemical Factors of Spirulina platensis Cultivation as Influenced by Nutrients Change","authors":"G. P. Ndjouondo, S. Dibong, Fotsop Oscar Wamba, V. D. Taffouo","doi":"10.3923/IJB.2017.67.74","DOIUrl":"https://doi.org/10.3923/IJB.2017.67.74","url":null,"abstract":"","PeriodicalId":20184,"journal":{"name":"Phyton-international Journal of Experimental Botany","volume":"10 1","pages":"67-74"},"PeriodicalIF":1.7,"publicationDate":"2017-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75615756","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Fatima Zohra Mokhfi, A. Dellal, H. Hassaini, A. Adda
{"title":"Evaluation of the Anatomical Polymorphism of Pistacia atlantica Population in the Rechaiga Area, Tiaret, Algeria","authors":"Fatima Zohra Mokhfi, A. Dellal, H. Hassaini, A. Adda","doi":"10.3923/IJB.2017.59.66","DOIUrl":"https://doi.org/10.3923/IJB.2017.59.66","url":null,"abstract":"","PeriodicalId":20184,"journal":{"name":"Phyton-international Journal of Experimental Botany","volume":"1 1","pages":"59-66"},"PeriodicalIF":1.7,"publicationDate":"2017-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82765264","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The interaction between plants and fungal pathogens comprises a range of mechanisms that determine the outcome of the interaction, i.e., compatible leading to susceptibility or incompatible leading to resistance. Several host defense mechanisms act both in susceptible and resistant plants. Yet, in the case of a compatible interaction involving a susceptible host and a virulent pathogen, the latter is able to win the battle and cause disease. By documenting several interactions between plant and fungal pathogens, this review describes some of the mechanisms which plants use for defense such as the reinforcement of the cell wall and the accumulation of pathogenesis-related (PR) proteins and of secondary metabolites and ways by which pathogens overcome plant defense.
{"title":"Host Defense Mechanisms During Fungal Pathogenesis and how these are Overcome in Susceptible Plants: A Review","authors":"M. Aoun","doi":"10.3923/IJB.2017.82.102","DOIUrl":"https://doi.org/10.3923/IJB.2017.82.102","url":null,"abstract":"The interaction between plants and fungal pathogens comprises a range of mechanisms that determine the outcome of the interaction, i.e., compatible leading to susceptibility or incompatible leading to resistance. Several host defense mechanisms act both in susceptible and resistant plants. Yet, in the case of a compatible interaction involving a susceptible host and a virulent pathogen, the latter is able to win the battle and cause disease. By documenting several interactions between plant and fungal pathogens, this review describes some of the mechanisms which plants use for defense such as the reinforcement of the cell wall and the accumulation of pathogenesis-related (PR) proteins and of secondary metabolites and ways by which pathogens overcome plant defense.","PeriodicalId":20184,"journal":{"name":"Phyton-international Journal of Experimental Botany","volume":"74 1","pages":"82-102"},"PeriodicalIF":1.7,"publicationDate":"2017-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90877498","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Endang Dewi Murrinie, P. Yudono, A. Purwantoro, Endang Sulistyani
{"title":"Morphological and Physiological Changes During Growth and Development of Wood-apple (Feronia limonia (L.) Swingle) Fruit","authors":"Endang Dewi Murrinie, P. Yudono, A. Purwantoro, Endang Sulistyani","doi":"10.3923/IJB.2017.75.81","DOIUrl":"https://doi.org/10.3923/IJB.2017.75.81","url":null,"abstract":"","PeriodicalId":20184,"journal":{"name":"Phyton-international Journal of Experimental Botany","volume":"295 1","pages":"75-81"},"PeriodicalIF":1.7,"publicationDate":"2017-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77115867","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-01-01DOI: 10.32604/PHYTON.2017.86.053
Virginie Mirleau-Thebaud, J. Daydé, J. Scheiner
Soil compaction represents an important issue in theactual context of agricultural system sustainability. Research on thevarious developments of root systems under tillage has been exploredfor many crops, whether for the biomass area or the underground,but very little concerns Sunflower ( Helianthus annuus L.). The objectivesof the study were to understand the impact of soil tillage andof the induced mechanically compacted soil on: i) sunflower’s rootsystem architecture, ii) biomass area iii) production. Two complementaryexperiments were realized in the south of France (France’smain sunflower production area). In both experiments, increased resistanceof the soil to penetration was observed, characterizing soilcompaction. Under compacted soil, major changes in the sunflower’sroot architecture occurred (-55% of root length, -67% of root surface,and -42% of root diameter) and root system exploration was negativelyimpacted (assessed through the use of semivariogram). Thisresulted in a decrease of deep root exploration and in an increasedlateral growth. Modifications of leaf surface, biomass, yield, and kernelcomponents were also reported. Those modifications were theconsequences of soil compaction, and suggest a compensatory effectunder such constraint.
{"title":"The influence of soil compaction and conservation tillage on sunflower’s (Helianthus annuus L.) below ground system","authors":"Virginie Mirleau-Thebaud, J. Daydé, J. Scheiner","doi":"10.32604/PHYTON.2017.86.053","DOIUrl":"https://doi.org/10.32604/PHYTON.2017.86.053","url":null,"abstract":"Soil compaction represents an important issue in theactual context of agricultural system sustainability. Research on thevarious developments of root systems under tillage has been exploredfor many crops, whether for the biomass area or the underground,but very little concerns Sunflower ( Helianthus annuus L.). The objectivesof the study were to understand the impact of soil tillage andof the induced mechanically compacted soil on: i) sunflower’s rootsystem architecture, ii) biomass area iii) production. Two complementaryexperiments were realized in the south of France (France’smain sunflower production area). In both experiments, increased resistanceof the soil to penetration was observed, characterizing soilcompaction. Under compacted soil, major changes in the sunflower’sroot architecture occurred (-55% of root length, -67% of root surface,and -42% of root diameter) and root system exploration was negativelyimpacted (assessed through the use of semivariogram). Thisresulted in a decrease of deep root exploration and in an increasedlateral growth. Modifications of leaf surface, biomass, yield, and kernelcomponents were also reported. Those modifications were theconsequences of soil compaction, and suggest a compensatory effectunder such constraint.","PeriodicalId":20184,"journal":{"name":"Phyton-international Journal of Experimental Botany","volume":"398 2 1","pages":"53-67"},"PeriodicalIF":1.7,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73153794","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-01-01DOI: 10.32604/PHYTON.2017.86.340
S. P. Gil, M. E. Reyna, L. Seisdedos, IP Argüello
Los objetivos de este trabajo fueron: (1) determinar lapractica cultural mas adecuada para la propagacion de Solidago chilensisMeyen, asteracea nativa de Argentina, para su uso en jardineriade bajo mantenimiento, y (2) describir las plantulas de S. chilensis ysu tipo morfologico. Los ensayos de germinacion, de 3 repeticionescon 50 frutos (aquenios) cada uno por tratamiento (escarificados ysin escarificar) y por ano, se realizaron con semillas cosechadas entre2011 y 2014 en la localidad de La Mesada, La Calera, Dpto. Colon(Cordoba, Argentina). Los resultados se trataron estadisticamentemediante analisis de varianza y fueron comparados por el metodoLSD de Fisher. Los esquejes de rizomas (50), obtenidos de plantasmadres seleccionadas a campo, fueron colocados en sustrato del lugar,con o sin polvo enraizante, y se cultivaron en invernadero y a campo.Las plantulas, tipo Chimonanthus y Macaranga, de germinacion fanerocotilartuvieron baja supervivencia. El porcentaje de germinacionoscilo entre 16 y 81% sin diferencias significativas entre tratamientos,pero si entre anos de cosecha. Aproximadamente el 90% de losesquejes de rizomas desarrollaron plantas normales, sin diferenciassignificativas entre tratamientos, por lo que se considera que esta esla forma mas eficiente de cultivar esta especie apta para uso en paisajismode mantenimiento minimo.
{"title":"Reproduction of Solidago chilensis, native Asteraceae useful for gardening with low maintenance requirements","authors":"S. P. Gil, M. E. Reyna, L. Seisdedos, IP Argüello","doi":"10.32604/PHYTON.2017.86.340","DOIUrl":"https://doi.org/10.32604/PHYTON.2017.86.340","url":null,"abstract":"Los objetivos de este trabajo fueron: (1) determinar lapractica cultural mas adecuada para la propagacion de Solidago chilensisMeyen, asteracea nativa de Argentina, para su uso en jardineriade bajo mantenimiento, y (2) describir las plantulas de S. chilensis ysu tipo morfologico. Los ensayos de germinacion, de 3 repeticionescon 50 frutos (aquenios) cada uno por tratamiento (escarificados ysin escarificar) y por ano, se realizaron con semillas cosechadas entre2011 y 2014 en la localidad de La Mesada, La Calera, Dpto. Colon(Cordoba, Argentina). Los resultados se trataron estadisticamentemediante analisis de varianza y fueron comparados por el metodoLSD de Fisher. Los esquejes de rizomas (50), obtenidos de plantasmadres seleccionadas a campo, fueron colocados en sustrato del lugar,con o sin polvo enraizante, y se cultivaron en invernadero y a campo.Las plantulas, tipo Chimonanthus y Macaranga, de germinacion fanerocotilartuvieron baja supervivencia. El porcentaje de germinacionoscilo entre 16 y 81% sin diferencias significativas entre tratamientos,pero si entre anos de cosecha. Aproximadamente el 90% de losesquejes de rizomas desarrollaron plantas normales, sin diferenciassignificativas entre tratamientos, por lo que se considera que esta esla forma mas eficiente de cultivar esta especie apta para uso en paisajismode mantenimiento minimo.","PeriodicalId":20184,"journal":{"name":"Phyton-international Journal of Experimental Botany","volume":"35 1","pages":"340-344"},"PeriodicalIF":1.7,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76407009","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-01-01DOI: 10.32604/PHYTON.2017.86.290
G. Nájera, L. Latorunerie-Moreno, Y. Muñoz
Among the different types of abiotic stresses, water isthe most damaging for crops. In the current research, the effect ofwater stress, induced with Polyethylene Glycol 8000 (PEG8000)and Sodium chloride (NaCl) solutions, was studied in maize genotypes.A randomized block design (RBD) with a factorial arrangementand four replications of 25 seeds each was used. The studiedmaize genotypes were RC2C39, RC2C51 (wild varieties of the Stateof Tabasco backcrossed with the endogamic line CML247 of the InternationalCenter for the Improvement of Maize and Wheat), wildTamulte, VS536, and Asgrow 7573 hybrid, study osmotic pressures(OP) were 0, -1.0, and -2.0 MPa. The percentage seed germination(G%), and seedling length (SL, in cm), root length (RL, in cm), freshseedling weight (FSW, in g), and fresh root weight (FRW, in g) wereevaluated on seedlings after 12 days of treatment imposition in thefive corn genotypes (Zea mays L.). The results showed significant differencesin the study variables before and after the stresses as theconcentrations of PEG8000 and NaCl increased. In general, theRC2C39, RC2C51, and VS536 genotypes had a better response toPEG8000 and NaCl as compared to wild Tamulte and Asgrow 7573hybrid for all measured variables. The OP of -2.0 MPa is suggestedto separate drought-tolerant from intolerant corn cultivars in theMexican tropical areas.
{"title":"Effect of PEG8000 and NaCl on germination and seedling traits of tropical maize (Zea mays L.)","authors":"G. Nájera, L. Latorunerie-Moreno, Y. Muñoz","doi":"10.32604/PHYTON.2017.86.290","DOIUrl":"https://doi.org/10.32604/PHYTON.2017.86.290","url":null,"abstract":"Among the different types of abiotic stresses, water isthe most damaging for crops. In the current research, the effect ofwater stress, induced with Polyethylene Glycol 8000 (PEG8000)and Sodium chloride (NaCl) solutions, was studied in maize genotypes.A randomized block design (RBD) with a factorial arrangementand four replications of 25 seeds each was used. The studiedmaize genotypes were RC2C39, RC2C51 (wild varieties of the Stateof Tabasco backcrossed with the endogamic line CML247 of the InternationalCenter for the Improvement of Maize and Wheat), wildTamulte, VS536, and Asgrow 7573 hybrid, study osmotic pressures(OP) were 0, -1.0, and -2.0 MPa. The percentage seed germination(G%), and seedling length (SL, in cm), root length (RL, in cm), freshseedling weight (FSW, in g), and fresh root weight (FRW, in g) wereevaluated on seedlings after 12 days of treatment imposition in thefive corn genotypes (Zea mays L.). The results showed significant differencesin the study variables before and after the stresses as theconcentrations of PEG8000 and NaCl increased. In general, theRC2C39, RC2C51, and VS536 genotypes had a better response toPEG8000 and NaCl as compared to wild Tamulte and Asgrow 7573hybrid for all measured variables. The OP of -2.0 MPa is suggestedto separate drought-tolerant from intolerant corn cultivars in theMexican tropical areas.","PeriodicalId":20184,"journal":{"name":"Phyton-international Journal of Experimental Botany","volume":"9 1","pages":"290-295"},"PeriodicalIF":1.7,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75229848","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-01-01DOI: 10.32604/PHYTON.2017.86.028
G. Aguilar, C. Peña-Valdivia, R. Castro-Rivera, JP Lara-Ávila, E. Cruz-Crespo, AN Rojas-Velázquez
Ha sido bien documentado que el vermicompost incorporadoal suelo incrementa la germinacion y productividad dealgunos cultivos. Sin embargo, se conoce poco su efecto sobre lasrespuestas fisiologicas de los mismos en condiciones de deficit dehumedad. El objetivo del estudio fue analizar el efecto del vermicomposty la suspension del riego en la conductancia estomatica, elintercambio de gases y el rendimiento de frijol (Phaseolus vulgarisL.) tolerante (cv. 92) y susceptible (cv. 122) a la sequia. Se cultivaronplantas sin vermicompost y con 1,5 y 3% de este en el suelo, con riegoen el ciclo completo de produccion y con suspension de riego a partirde la floracion. Se registro el cambio de la humedad gravimetrica delsuelo, y en la planta se estimo gs, transpiracion (E), asimilacion deCO2 (A), temperatura foliar, uso eficiente del agua (UEA) y componentesdel rendimiento. El punto de marchitez permanente del sueloincremento hasta 15%, en proporcion a la adicion de vermicompost.Se observo que a los 16 d sin riego, la gs y A se redujeron totalmente,y E y UEA disminuyeron (P≤0,05) 62 y 91%, respectivamente, respectoa los tratamientos con riego. El vermicompost redujo (P≤0,05)gs mas de 30%, mientras que E se redujo un 16 y 49% con 1,5 y 3%de vermicompost, respectivamente, en relacion al control. El cv 122presento UEA 23% menor (P≤0,05) que el cv. 92, aunque el primeromostro mayor rendimiento principalmente con el riego. El numeroy biomasa de semillas se incrementaron en mas del 30% por efectodel vermicompost, y este efecto se observo en las dos condiciones deriego. El vermicompost modifico algunas propiedades del suelo y almismo tiempo causo una menor apertura estomatica e incremento elrendimiento, principalmente en condicion de riego.
{"title":"Vermicompost and water stress effects on dry beans (Phaseolus vulgaris L.): productive parameters and water relations","authors":"G. Aguilar, C. Peña-Valdivia, R. Castro-Rivera, JP Lara-Ávila, E. Cruz-Crespo, AN Rojas-Velázquez","doi":"10.32604/PHYTON.2017.86.028","DOIUrl":"https://doi.org/10.32604/PHYTON.2017.86.028","url":null,"abstract":"Ha sido bien documentado que el vermicompost incorporadoal suelo incrementa la germinacion y productividad dealgunos cultivos. Sin embargo, se conoce poco su efecto sobre lasrespuestas fisiologicas de los mismos en condiciones de deficit dehumedad. El objetivo del estudio fue analizar el efecto del vermicomposty la suspension del riego en la conductancia estomatica, elintercambio de gases y el rendimiento de frijol (Phaseolus vulgarisL.) tolerante (cv. 92) y susceptible (cv. 122) a la sequia. Se cultivaronplantas sin vermicompost y con 1,5 y 3% de este en el suelo, con riegoen el ciclo completo de produccion y con suspension de riego a partirde la floracion. Se registro el cambio de la humedad gravimetrica delsuelo, y en la planta se estimo gs, transpiracion (E), asimilacion deCO2 (A), temperatura foliar, uso eficiente del agua (UEA) y componentesdel rendimiento. El punto de marchitez permanente del sueloincremento hasta 15%, en proporcion a la adicion de vermicompost.Se observo que a los 16 d sin riego, la gs y A se redujeron totalmente,y E y UEA disminuyeron (P≤0,05) 62 y 91%, respectivamente, respectoa los tratamientos con riego. El vermicompost redujo (P≤0,05)gs mas de 30%, mientras que E se redujo un 16 y 49% con 1,5 y 3%de vermicompost, respectivamente, en relacion al control. El cv 122presento UEA 23% menor (P≤0,05) que el cv. 92, aunque el primeromostro mayor rendimiento principalmente con el riego. El numeroy biomasa de semillas se incrementaron en mas del 30% por efectodel vermicompost, y este efecto se observo en las dos condiciones deriego. El vermicompost modifico algunas propiedades del suelo y almismo tiempo causo una menor apertura estomatica e incremento elrendimiento, principalmente en condicion de riego.","PeriodicalId":20184,"journal":{"name":"Phyton-international Journal of Experimental Botany","volume":"27 1","pages":"28-39"},"PeriodicalIF":1.7,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72718676","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-01-01DOI: 10.32604/PHYTON.2017.86.079
H. Altube, Mg Ontivero Urquiza, R. S. Rivata, Leonardo Baghin, R. Taborda, M. P. Blanco
Establecer el momento de cosecha es una decision dificilpara el fruticultor. El objetivo del presente trabajo fue estudiarlos cambios de algunas variables implicadas en la maduracion de lasfrutas con el fin de determinar el momento oportuno de cosecha conel fin de garantizar frutos de calidad en duraznero “Flavorcrest/Nemared”.Las plantas fueron conducidas en palmeta libre a 4,5 x 3 mcon riego por goteo. Las cosechas fueron totales en tres arboles ytres fechas. Se evaluo peso, altura y diametro del fruto, firmeza de lapulpa, solidos solubles totales y acidez en el momento de la cosecha,y luego de tres dias a temperatura ambiente, para simular un tiempominimo de comercializacion en mercados cercanos. El aumento depeso fue continuo a medida que avanzo la fecha de cosecha, con valoresque variaron de 1,3 g/dia a 1,9 g/dia; por su parte, las perdidasde peso por deshidratacion variaron de 13,49 a 19,9 g, valores por logeneral muy altos debidos a las condiciones de conservacion, particularmenteen las primeras fechas de cosecha. Los valores de presion(kg/cm2) alcanzados en los distintos anos en las primeras cosechas(5,61; 5,43 y 7,87 en 2010, 2011 y 2012, respectivamente) fueronadecuados, mientras que los de las dos cosechas del segundo y tercerano fueron muy bajos, y mas aun despues de tres dias, salvo en lascosechas del primer y tercer ano. Los acidos disminuyeron a medidaque avanzo la fecha de cosecha y fueron importantes en el sabor delas frutas.
{"title":"Physiological traits during ripening showing the appropriate timing for harvest to improve the organoleptic quality of “Flavorcrest” peach (Prunus persica L. Batsch)","authors":"H. Altube, Mg Ontivero Urquiza, R. S. Rivata, Leonardo Baghin, R. Taborda, M. P. Blanco","doi":"10.32604/PHYTON.2017.86.079","DOIUrl":"https://doi.org/10.32604/PHYTON.2017.86.079","url":null,"abstract":"Establecer el momento de cosecha es una decision dificilpara el fruticultor. El objetivo del presente trabajo fue estudiarlos cambios de algunas variables implicadas en la maduracion de lasfrutas con el fin de determinar el momento oportuno de cosecha conel fin de garantizar frutos de calidad en duraznero “Flavorcrest/Nemared”.Las plantas fueron conducidas en palmeta libre a 4,5 x 3 mcon riego por goteo. Las cosechas fueron totales en tres arboles ytres fechas. Se evaluo peso, altura y diametro del fruto, firmeza de lapulpa, solidos solubles totales y acidez en el momento de la cosecha,y luego de tres dias a temperatura ambiente, para simular un tiempominimo de comercializacion en mercados cercanos. El aumento depeso fue continuo a medida que avanzo la fecha de cosecha, con valoresque variaron de 1,3 g/dia a 1,9 g/dia; por su parte, las perdidasde peso por deshidratacion variaron de 13,49 a 19,9 g, valores por logeneral muy altos debidos a las condiciones de conservacion, particularmenteen las primeras fechas de cosecha. Los valores de presion(kg/cm2) alcanzados en los distintos anos en las primeras cosechas(5,61; 5,43 y 7,87 en 2010, 2011 y 2012, respectivamente) fueronadecuados, mientras que los de las dos cosechas del segundo y tercerano fueron muy bajos, y mas aun despues de tres dias, salvo en lascosechas del primer y tercer ano. Los acidos disminuyeron a medidaque avanzo la fecha de cosecha y fueron importantes en el sabor delas frutas.","PeriodicalId":20184,"journal":{"name":"Phyton-international Journal of Experimental Botany","volume":"21 1","pages":"79-83"},"PeriodicalIF":1.7,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76155133","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-01-01DOI: 10.32604/PHYTON.2017.86.163
Jian Zhang, Yf Yang, Hy Li, W. Sun
Community succession is an orderly replacementprocess between dominant species of such community. The mutualpopulations changes of two clonal plant species, Leymus chinensis andKalimeris integrifolia, were analyzed during a process of restorationsuccession in a degraded meadow in Northeast China. It was basedon the methods of space-for-time substitution and continuous samplingin different mixed ratios of community sections. The resultsshowed that the two species populations adjusted the size of rametsto ensure a relatively stable number in the mixed community. Thefluctuation and instability were more obvious in the K. integrifoliathan in the L. chinensis population. While density/biomass of K. integrifoliashowed a linear decrease, there was a concomitant L. chinensispopulation increase from the middle to the end of the growing periods.The density and taproot biomass of the K. integrifolia populationdecreased logarithmically with increases in the biomass/cumulativerhizome length of the L. chinensis population during the late and endperiods of the growing season. With the progress of succession, K.integrifolia will be eventually replaced by L. chinensis. However, K.integrifolia would be a companion species in the community for along time.
{"title":"Interaction patterns on populations of two clonal species in restoring succession series in a degraded meadow in Northeast China","authors":"Jian Zhang, Yf Yang, Hy Li, W. Sun","doi":"10.32604/PHYTON.2017.86.163","DOIUrl":"https://doi.org/10.32604/PHYTON.2017.86.163","url":null,"abstract":"Community succession is an orderly replacementprocess between dominant species of such community. The mutualpopulations changes of two clonal plant species, Leymus chinensis andKalimeris integrifolia, were analyzed during a process of restorationsuccession in a degraded meadow in Northeast China. It was basedon the methods of space-for-time substitution and continuous samplingin different mixed ratios of community sections. The resultsshowed that the two species populations adjusted the size of rametsto ensure a relatively stable number in the mixed community. Thefluctuation and instability were more obvious in the K. integrifoliathan in the L. chinensis population. While density/biomass of K. integrifoliashowed a linear decrease, there was a concomitant L. chinensispopulation increase from the middle to the end of the growing periods.The density and taproot biomass of the K. integrifolia populationdecreased logarithmically with increases in the biomass/cumulativerhizome length of the L. chinensis population during the late and endperiods of the growing season. With the progress of succession, K.integrifolia will be eventually replaced by L. chinensis. However, K.integrifolia would be a companion species in the community for along time.","PeriodicalId":20184,"journal":{"name":"Phyton-international Journal of Experimental Botany","volume":"86 1","pages":"163-170"},"PeriodicalIF":1.7,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89259086","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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