| dc.contributor | | en-US |
| dc.creator | Sotomayor, Carlos | |
| dc.creator | Norambuena, Paulina | |
| dc.creator | Ruiz, Rafael | |
| dc.date | 2010-04-30 | |
| dc.date.accessioned | 2021-01-18T16:30:04Z | |
| dc.date.available | 2021-01-18T16:30:04Z | |
| dc.identifier | https://www.rcia.uc.cl/index.php/ijanr/article/view/192 | |
| dc.identifier.uri | https://revistaschilenas.uchile.cl/handle/2250/161901 | |
| dc.description | The effect of foliar boron treatments on fruit growth and seed development in Actinidia deliciosa, cv. Hayward, was studied. The distal leaves (BH) or flowers (BF) of a shoot were sprayed with 500 mg L-1 boric acid during the flowering period. The mobility of boron from the leaves to the flowers through the phloem was determined by spraying only the leaves. From 0 to 96 h after treatment, leaves and flowers were sampled and total boron was assessed. At harvest time, fruit weight and diameter plus seed weight and number were measured for the different treatments. The weight of fruits growing from shoots with boron-treated leaves were 14.1% higher than the control, while the weight of fruits derived from boron-treated flowers was 17% higher than that of fruits from untreated flowers. Regarding fruit length, significant differences between boron treatments and the control were observed, with an 8.2% and 8.5% increase for BH and BF treatments, respectively. No significant differences were found in fruit diameter. Fruits grown from shoots with boron-treated leaves had 43% more seeds than fruit grown from untreated control shoots, while fruits resulting from boron-treated flowers had 44% more seeds. This demonstrates the positive effect of boron treatment in seed production. No differences were observed in seed weight between treatments. The correlation coefficient between seed number and fruit weight was r2 = 0.1294 for BF, r2 = 0.1298 for BH and r2 =0.0002 for the control. There was no variation in non-treated leaves and flowers with respect to boron concentration for a 96 h time period. On the contrary, in sprayed leaves boron levels reached up to 16 mg kg-1 between 24 and 48 h and slightly decreased after 96 h, demonstrating the boron absorption capacity of leaves. In the flowers from the shoots with boron-treated leaves, there was a significant 14 mg kg-1 increase in boron concentration from 24 to 96 h, showing boron mobility from leaves to flowers. Se estudió el efecto de aplicaciones foliares de ácido bórico 0.5 g L-1 sobre el crecimiento del fruto de kiwi (Actinidia deliciosa), cv. Hayward y el desarrollo de semillas. Las aplicaciones fueron realizadas sobre hojas distales de brotes (BH) o sobre flores (BF). Se buscó también establecer la movilidad del boro desde hojas a flores con aplicaciones realizadas solamente sobre hojas distales de brotes florales. Eentre 0 y 96 hs post-aplicación se realizaron análisis químicos tanto en hojas como flores, con y sin tratamiento foliar, para determinar boro total. Een la cosecha se midió peso y diámetro de frutos y número y peso de semillas según tratamiento. Eel peso de frutos del tratamiento BH superó significativamente al testigo en 14,1 %, en tanto los del tratamiento BF alcanzaron un 17,3 % más. Los tratamientos BF y BH aumentaron significativamente el diámetro de frutos en un 8,2 y 8,5%, respecto del testigo. No se encontraron diferencias estadísticas entre tratamientos respecto a diámetro ecuatorial. Los frutos del tratamiento BH produjeron 43% más semillas que el testigo, mientras que los del tratamiento BF las incrementaron en 44%, ambos aumentos significativos. Eesto indicaría el efecto favorable del boro aplicado en la producción de semillas. No hubo diferencias entre tratamientos en peso individual de semillas. La correlación entre número de semillas y peso del fruto respectivo fue de r2 = 0,1294 para BF, r2 = 0,1298 para BH y r2 = 0,0002 para el testigo. las hojas sin aplicación de boro (testigos), durante 96 horas, no hubo variaciones en la concentración de boro total, tanto en hojas como en flores. las hojas tratadas, el nivel de boro subió significativamente en 16 mg kg-1 después de 24 h, manteniéndose así hasta 48 horas. cuanto al boro aplicado en hojas distales, y medido en las flores del mismo brote, el nivel subió significativamente en 14 mg kg-1 a las 24 h y hasta las 96 h. demostraría la eventual movilidad floemática del boro entre hojas y flores. | en-US |
| dc.format | | |
| dc.language | eng | |
| dc.publisher | Pontificia Universidad Católica de Chile | en-US |
| dc.relation | https://www.rcia.uc.cl/index.php/ijanr/article/view/192/144 | |
| dc.source | International Journal of Agriculture and Natural Resources; Vol 37, No 1 (2010); 133-141 | en-US |
| dc.source | International Journal of Agriculture and Natural Resources; Vol 37, No 1 (2010); 133-141 | es-ES |
| dc.source | 2452-5731 | |
| dc.source | 2452-5731 | |
| dc.subject | | en-US |
| dc.subject | Boric acid, boron, fruit weight, kiwifruit, seed number, seed weight, Acido bórico, boro, kiwi, número de semillas, peso de semillas, peso de frutos. | en-US |
| dc.title | Boron dynamics related to fruit growth and seed production in kiwifruit (Actinidia deliciosa, cv. Hayward). | en-US |
| dc.type | info:eu-repo/semantics/article | |
| dc.type | info:eu-repo/semantics/publishedVersion | |
| dc.type | | en-US |
| dc.type | | es-ES |
