scholarly journals Correlative control of early stages of flower bud initiation in 'bourse' shoots of apple (Malus x domestica Borkh. cv. Golden Delicious)

1989 ◽  
Vol 46 (Supplement) ◽  
pp. 44s-46s ◽  
Author(s):  
J. Escobedo ◽  
J. Crabbé
2016 ◽  
Vol 39 (1) ◽  
pp. 17-24
Author(s):  
Agustín Rascón-Chu ◽  
Ana-Luisa Martínez-López ◽  
Elizabeth Carvajal-Millán ◽  
Karla G. Martínez-Robinson ◽  
Alma C. Campa-Mada

El raleo de frutos es una práctica común en los huertos de manzana (Malus x domestica Borkh.) para obtener frutos de mayor tamaño y promover el retorno de la floración. Esta práctica genera manzanas inmaduras y de diámetro pequeño (10 a 40 mm) que son utilizadas ocasionalmente como alimento para ganado. La utilización de la manzana de raleo como fuente alternativa de pectina podría incrementar la rentabilidad de los huertos y el desarrollo de nuevos procesos de transformación. La pectina es un polisacárido localizado en la pared celular de los tejidos vegetales, que se ha extraído de distintas fuentes y utilizado exitosamente en la industria alimentaria. Este trabajo de investigación tuvo como objetivo extraer la pectina de manzanas de raleo de las variedades Golden Delicious (GD) y RedChief Delicious (RChD), y determinar las propiedades gelificantes del polisacárido. La pectina fue extraída mediante hidrólisis ácida controlada, con un rendimiento de 12 y 11 % (p/p) para GD y RChD, respectivamente. Las pectinas obtenidas fueron desesterificadas por vía alcalina y presentaron grados de esterificación de 35 % (GD) y 42 % (RChD). Ambas pectinas formaron geles iónicos inducidos por calcio, con una elasticidad de 147 y 90 Pa para GD y RChD, respectivamente, a una concentración de polisacárido de 2 % (p/v). La pectina desesterificada de manzanas inmaduras de raleo presenta propiedades físico-químicas y gelificantes que podrían ser de interés para las industrias alimentaria, farmacéutica y cosmética.


2016 ◽  
Vol 209 ◽  
pp. 187-191 ◽  
Author(s):  
Anne-Sophie Poisson ◽  
Patricia Berthelot ◽  
Camille Le Bras ◽  
Agnès Grapin ◽  
Emilie Vergne ◽  
...  

HortScience ◽  
1998 ◽  
Vol 33 (3) ◽  
pp. 553b-553
Author(s):  
Esmaeil Fallahi

Early thinning of apples is important because of its impact on fruit size and next season's flower bud initiation. In the past, apple cultivars were often sprayed with the blossom thinner sodium dinitro-ortho-cresol(Elgetol) during full bloom, followed by a post-bloom application of a fruit thinner such as carbaryl with or without naphthalene acetic acid (NAA). Elgetol was removed from the market in 1989 because of the high cost of re-registration. Full-bloom sprays of sulfcarbamide (Wilthin), pelargonic acid (Thinex), and endothalic acid (Endothal), ammonium thiosulfate (ATS) or petal fall spray of carbaryl (Sevin XLR Plus) were developed as replacements for Elgetol. Hydrogen cyanamide (HC) and other chemicals have been used to eliminate or to reduce chilling requirements of peaches grown under the warm desert conditions. HC applied at “pink bloom” stage was observed to reduce the number of open blooms in `Florda Prince' peach; therefore, it was first used for blossom thinning in this cultivar in Arizona. Later, HC was also found to be an effective blossom thinner for plums in Idaho. HC has recently been found to effectively thin apple and peach blossoms. Armothin has also been an effective blossom thinner for peach in California.


2019 ◽  
Vol 252 ◽  
pp. 229-237 ◽  
Author(s):  
Raffaele Testolin ◽  
Serena Foria ◽  
Irina Baccichet ◽  
Rachele Messina ◽  
Francesco Danuso ◽  
...  

1987 ◽  
Vol 65 (1) ◽  
pp. 137-142 ◽  
Author(s):  
Saïda Ammar ◽  
Abdellatif Benbadis ◽  
Bal Krishna Tripathi

Flower bud initiation in 5-month-old seedlings of date palm (Phoenix dactylifera L. var. Deglet Nour) was studied under controlled conditions. Normally inflorescence formation in mature plants takes 8 to 10 years. In juvenile plants inflorescence formation was induced in a 16-h day at 28 °C, by a combination of 6-benzylaminopurine, indoleacetic acid, and glucose or sucrose. The present investigation has determined favourable cultural conditions for floral induction in date palm in vitro at a very early stage of ontogeny. Both male and female flowers were induced on young plants. Floral induction usually occurred only when root formation was completely inhibited. The apparent antagonism between root formation and floral development suggests a possible competition in the young plant for growth substances, although production of floral inhibitory substances from the root cannot be precluded. These observations on the induction of precocious flowering in date palm seedlings suggest a model of development, corresponding to neoteny, of this tree as an herb.


2013 ◽  
Vol 40 (4) ◽  
pp. 297-303
Author(s):  
Young Soon Kwon ◽  
Seong Youl Choi ◽  
Mi Jung Kil ◽  
Bong Sik You ◽  
Jae A Jung ◽  
...  

2020 ◽  
Vol 76 (3) ◽  
pp. 137-148
Author(s):  
Danuta Raj ◽  
Izabela Fecka ◽  
Aneta Starzec

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