Browsing by Subject "Leaf area"

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Growth in partially defoliated strawberry plants cultivated in the tropical highlands

Casierra Posada, Fánor; Torres, Israel D.; Riascos Ortíz, Donald H. (Bogotá : Universidad de Ciencias Aplicadas y Ambientales, 2012, 2012-07)

Debido a factores naturales o accidentales, las plantas pueden experimentar defoliación parcial. Se presentan los resultados de un experimento orientado a determinar el efecto de la defoliación parcial sobre el crecimiento ...
Growth of banana passionfruit seedlings (Passiflora tripartita var. mollissima (Kunth) L. H. Bailey) under saline stress

Casierra Posada, Fánor; Peña Olmos, Jaime E.; Tejedor, Edwin (Bogotá : Universidad de Ciencias Aplicadas y Ambientales, 2011, 2011-01)

High salinity in the root zone affects the growth of many plant species. soil salinity can lead to reduced emergence and low growth of seedlings. The objective of this study was to evaluate the growth ...

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Growth in partially defoliated strawberry plants cultivated in the tropical highlands
...
Casierra Posada, Fánor | 2012-07

Debido a factores naturales o accidentales, las plantas pueden experimentar defoliación parcial. Se presentan los resultados de un experimento orientado a determinar el efecto de la defoliación parcial sobre el crecimiento de plantas de fresa (Fragaria × ananassa Duch. cv. ‘Chandler’), realizado en Tunja, Colombia. Se aplicaron tres niveles de defoliación, de 0 (control), 38 y 67%, desde el inicio de la brotación de hojas luego del transplante. Se determinó la toma de agua, la distribución de materia seca en los diferentes órganos, el área foliar y el peso seco total. Con esta información, se calculó la relación de área foliar, la relación de peso foliar, las tasas de crecimiento absoluto y relativo, así como también la eficiencia en el uso del agua. Todas las variables evaluadas mostraron valores reducidos como consecuencia de la defoliación, lo que indica que las plantas de fresa son sensibles a niveles de defoliación por encima de 38%, con lo cual el crecimiento se ve seriamente comprometido.

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Growth of banana passionfruit seedlings (Passiflora tripartita var. mollissima (Kunth) L. H. Bailey) under saline stress
...
Casierra Posada, Fánor | 2011-01

High salinity in the root zone affects the growth of many plant species. soil salinity can lead to reduced emergence and low growth of seedlings. The objective of this study was to evaluate the growth of banana passion fruit (P. tripartitavar. mollissima (Kunth) L. H. Bailey) seedlings under saline stress. The salinity effect on growth and dry matter (DM) production of banana passionfruit seedlings was evaluated under greenhouse conditions at Tunja / Colombia. Plantlets were grown in plastic bags filled with soil and 0; 20; 40 and 80mM NaCl were added to the soil, which induced the following different electrical conductivity levels: 0.70; 2.38; 3.47 and 5.49 ds m-1 respectively. salt was added gradually to the soil, up to the mentioned concentration. Results indicate significant differences among treatments. Plants of the control treatment without salt had higher number of leaves, total stem + shoot length, specific leaf weight, leaf area and DM in relation to salt treated plants. Leaf area and DM production were drastically reduced by salinity, especially by 80mM NaCl. The DM partitioning was also affected by salinity, reducing dry matter accumulation in leaves and increasing the DM in petioles + stems + shoots and roots. The findings from the study indicate that banana passionfruit seedlings are moderately sensitive to salt stress.

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Browsing by Subject "Leaf area"

Growth in partially defoliated strawberry plants cultivated in the tropical highlands ﻿

Growth of banana passionfruit seedlings (Passiflora tripartita var. mollissima (Kunth) L. H. Bailey) under saline stress ﻿

Envíos recientes

Growth in partially defoliated strawberry plants cultivated in the tropical highlands

Growth of banana passionfruit seedlings (Passiflora tripartita var. mollissima (Kunth) L. H. Bailey) under saline stress

Growth in partially defoliated strawberry plants cultivated in the tropical highlands

Growth of banana passionfruit seedlings (Passiflora tripartita var. mollissima (Kunth) L. H. Bailey) under saline stress