Growth and gas exchange parameters of Citrus plants stressed with different salts

Bañuls, Josefina; Serna, Maria Dolores; Legaz, Francisco; Talón, Manuel; Primo‐Millo, Eduardo

doi:10.1016/s0176-1617(97)80202-7

Cited by 123 publications

(92 citation statements)

References 24 publications

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“…Consequently, damage caused by salinity has been primarily associated with ion toxicity. It is generally accepted, however, that in citrus chloride (Cl -) accumulation (Cooper, 1961;Walker et al, 1982;Bañuls and Primo-Millo, 1995;1992;Bañuls et al, 1997;RomeroAranda et al, 1998;Moya et al, 2003) is rather more unfavorable than sodium (Na + ) build-up. Furthermore, a clear relationship between leaf Cl -concentration and defoliation has been established (Behboudian et al, 1986;Lloyd et al, 1989;Bañuls and Primo-Millo, 1992;Storey, 1995).…”

Section: Abiotic Constrains Influencing Citrus Fruitingmentioning

confidence: 99%

Physiology of citrus fruiting

Iglesias

Cercós

Colmenero‐Flores

et al. 2007

Braz. J. Plant Physiol.

Self Cite

309

232

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Citrus is the main fruit tree crop in the world and therefore has a tremendous economical, social and cultural impact in our society. In recent years, our knowledge on plant reproductive biology has increased considerably mostly because of the work developed in model plants. However, the information generated in these species cannot always be applied to citrus, predominantly because citrus is a perennial tree crop that exhibits a very peculiar and unusual reproductive biology. Regulation of fruit growth and development in citrus is an intricate phenomenon depending upon many internal and external factors that may operate both sequentially and simultaneously. The elements and mechanisms whereby endogenous and environmental stimuli affect fruit growth are being interpreted and this knowledge may help to provide tools that allow optimizing production and fruit with enhanced nutritional value, the ultimate goal of the Citrus Industry. This article will review the progress that has taken place in the physiology of citrus fruiting during recent years and present the current status of major research topics in this area. Key words: abiotic stresses, abscission, color break, flowering, fruit set, ripening Fisiologia da frutificação em citrus. Citrus é a principal fruteira no mundo, tendo, portanto, profundos impactos econômicos, sociais e culturais em nossa sociedade. Nos últimos anos, o conhecimento sobre a biologia reprodutiva de plantas tem aumentado consideravelmente, principalmente em função de trabalhos desenvolvidos com plantas-modelo. Todavia, a informação produzida nessas espécies nem sempre pode ser aplicada a citrus, fundamentalmente porque citrus é uma cultura arbórea perene com uma biologia reprodutiva muito peculiar e incomum. A regulação do crescimento e desenvolvimento do fruto em citrus é um fenômeno complexo e dependente de muitos fatores externos e internos que podem operar tanto seqüencialmente como simultaneamente. Os elementos e mecanismos pelos quais estímulos ambientes e endógenos afetam o crescimento do fruto vêm sendo interpretados, e esse conhecimento pode auxiliar a prover ferramentas que permitiriam otimizar a produção per se, além da obtenção de frutos com maior valor nutricional, o objetivo precípuo da Industria de Citrus. Neste artigo, revisam-se os avanços que vêm ocorrendo na fisiologia da frutificação de citrus durante os últimos anos; apresenta-se, também, o status atual de pesquisas mais relevantes nessa área. Palavras-chave: estresses abióticos, floração, maturação, vingamento de frutos

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Section: Abiotic Constrains Influencing Citrus Fruitingmentioning

confidence: 99%

Physiology of citrus fruiting

Iglesias

Cercós

Colmenero‐Flores

et al. 2007

Braz. J. Plant Physiol.

Self Cite

309

232

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“…The results of our study also showed that supplemental Ca reduced leaf Na (table IV). Calcium was found to be effective at reducing the transport of sodium from roots to leaves, thereby alleviating foliar injury in citrus grown under saline conditions [42,43].…”

Section: Calcium Contentmentioning

confidence: 99%

Calcium induces salinity tolerance in pistachio rootstocks

Tavallali¹,

Rahemi²,

Panahi³

2008

Fruits

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--Introduction. Saline soils may exert a different effect on seed germination and seedling growth. Materials and methods. The seeds of two rootstocks of pistachio (Pistacia vera), Ghazvini and Badami-e-zarand, were incubated at 20°C in the dark in a 150 mM NaCl solution or in 150 mM NaCl solutions amended with (50, 100 and 150) mM CaSO 4 . Seeds were planted in pots containing a mixture of garden soil, sand and compost (1/3 v/v) to investigate the effect of calcium sulphate on plants grown under salt stress. Irrigation water treatments were control (deionised water alone); salinity stress (150 mM NaCl); salinity with 50 mM CaSO 4 ; salinity with 100 mM CaSO 4 ; and salinity with 150 mM CaSO 4 . Results and discussion. In all treatments, both the final germination percentage and the final percentage of seeds with emerging seedlings longer than 20 mm were higher in the Ghazvini rootstock than in the Badami-e-zarand rootstock. Both the final germination percentage and the final percentage of seeds with emerging seedlings were significantly increased with increasing CaSO 4 concentration, except at the highest CaSO 4 concentration. The plants grown under 150 mM NaCl produced less dry matter and had lower chlorophyll content than those grown without NaCl. Supplementary CaSO 4 only at (50 and 100) mM concentrations ameliorated the negative effects of salinity on plant dry matter and chlorophyll content. Sodium (Na) concentration in plant tissues increased in both leaves and roots of plants under the NaCl treatment alone. The Ghazvini rootstock had much lower Na. Additions of CaSO 4 significantly lowered the concentration of Na in both leaves and roots. The Ghazvini rootstock was more tolerant to salinity than the Badami-e-zarand rootstock. The accumulation of Na in leaves and roots indicates a possible mechanism whereby cv. Ghazvini copes with salinity in the rooting medium, and/or may indicate the existence of an inhibition mechanism of Na transport to leaves. Concentrations of Ca and K were lower in the plants grown at high NaCl concentration than in those under the control treatment, and, for the cv. Ghazvini, these two element's concentrations were increased in both leaves and roots for the plants with calcium sulphate treatment; for the cv. Badamie-zarand, these concentrations were increased in only the roots.Iran Islamic Republic / Pistacia vera / germination / growth / osmotic stress / saline water / calcium sulphate / salt tolerance Le calcium induit une tolérance au sel dans les porte-greffes de pistachiers.Résumé --Introduction. Les sols salins peuvent exercer différents effets sur la germination des graines et sur la croissance des jeunes plantes. Matériel et méthodes. Les graines de deux porte-greffes de pistachiers (cultivars Ghazvini et Badami-e-zarand de Pistacia vera) ont été incubées à 20°C à l'obscurité dans une solution à 150 mM de NaCl ou dans des solutions de 150 mM de NaCl enrichies avec (50, 100, et 150) mM de CaSO 4 . Ces graines ont été plantées dans des pots contenant un mélange de so...

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“…Debido a la clara influencia del patrón sobre la absorción del Cl (Cooper, 1961;Walker et al, 1983;Levy et al, 1992;Bañuls et al, 1997), se analizó asimismo la concentración de este ión en las raíces finas de los árboles en todas las extracciones realizadas (Figura 16).…”

Section: Clorurounclassified

Estudio de la absorción y translocación del nitrógeno en cítricos en función del aporte estacional del abono nitrogenado mediante el uso de la técnica de dilución isotópica

Alcántara¹

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Dª Belén Martínez Alcántara, Ingeniera Agrónoma, ha realizado bajo nuestra dirección el trabajo que, con el título "Estudio de la absorción y translocación del nitrógeno en cítricos en función del aporte estacional del abono nitrogenado, mediante la técnica de dilución isotópica", presenta para optar al grado de Doctora Ingeniera Agrónoma.Para que así conste a los efectos oportunos, firman el presente documento en Moncada a 9 de marzo de 2010. Fdo. D. Francisco Legaz Paredes Fdo. Dª Ana Quiñones OliverA mis padres... AGRADECIMIENTOSAntes de poner el punto final a este documento, me gustaría dejar constancia del apoyo recibido, que de forma directa o indirecta tanto me ha ayudado en esta etapa, y del que sin duda me siento especialmente orgullosa.En primer lugar, mi agradecimiento es para mis directores de tesis, el Dr. Francisco Legaz, por su dedicación, por ser ejemplo de minuciosidad y perfeccionismo, gracias por todo el tiempo dedicado; a la Dra. Ana Quiñones, por su apoyo durante estos años, por su continuo ánimo y ayudarme a ver siempre el lado positivo. Gracias por la confianza que depositasteis en mí, pero sobre todo, gracias por vuestro cariño.Por supuesto, todo este trabajo no habría sido posible sin los compañeros delDepartamento de Citricultura, gracias por vuestra ayuda en los interminables arranques y en el día a día. A Pepa, gracias porque desde el primer momento has velado por mi y lo sigues haciendo; a Tere, por tu ironía y múltiples refranes; a Mª Carmen Prieto, por tu apoyo y comprensión y por los buenos momentos compartidos. A Bati, por la ayuda en el A Ángeles Calatayud, mi madrina de FIA, gracias por tu ayuda pero especialmente por tu apoyo e interés en todo momento. A Ramón Redondo, María de Castro y Fernando de la Rubia, por ser "el teléfono de la esperanza" en los momentos difíciles con la espectrometría de masas. A Emilio Carbonell y Jordi Pérez, por hacer "fácil" la estadística.A mis amigos, muy especialmente a mis incondicionales, Carolina y María, que habéis seguido con interés cada uno de mis pasos, animándome continuamente, me siento muy afortunada. A Pablo, porque se que puedo contar contigo.A Bosco, por tu infinita paciencia, por escucharme una y otra vez, por animarme siempre, aunque te lo haya puesto especialmente difícil este último año; y porque sí, sí que te lo imaginas…quién si no.A mi familia. A Jose Luis, que has seguido semanalmente mi evolución. A mi hermano, porque siempre estás ahí. Y sobre todo, y muy especialmente, a mis padres, porque si he llegado a completar este proceso ha sido, sin duda, gracias a vosotros.La verdadera ciencia enseña, por encima de todo, a dudar y a ser ignorante. Miguel de Unamuno RESUMENUna fertilización nitrogenada racional debe contemplar no sólo el aporte de una dosis ajustada a las necesidades del cultivo, sino que a su vez debe considerar la correcta distribución de ésta durante el periodo de abonado. Sin embargo, no se dispone de suficiente información del efecto que la distribución estacional del fertilizante tiene sobre la absorción y ...

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Growth and gas exchange parameters of Citrus plants stressed with different salts

Cited by 123 publications

References 24 publications

Physiology of citrus fruiting

Physiology of citrus fruiting

Calcium induces salinity tolerance in pistachio rootstocks

Estudio de la absorción y translocación del nitrógeno en cítricos en función del aporte estacional del abono nitrogenado mediante el uso de la técnica de dilución isotópica

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