Pistillate Flower Abcission Symptoms of ’Serr’ Walnut (Juglans RegiaL.)

Pistillate Flower Abcission Symptoms of ’Serr’ Walnut (Juglans RegiaL.)

Pistillate flower abscission (PFA) severely affects walnut (Juglans regia L.) production, mainly of the cultivar ’Serr’. A study on symptoms of flower abortion in walnut ’Serr’, induced by excess or lack of pollen, was carried out following the evolution of fl...

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Autores principales: González R,Cristián, Lemus S,Gamalier, Reginato,Gabino
Lenguaje:English
Publicado: Instituto de Investigaciones Agropecuarias, INIA 2008
Materias:
lack of pollen
excess of pollen
pollination
Acceso en línea:http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392008000200008
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spelling oai:scielo:S0718-583920080002000082018-10-01Pistillate Flower Abcission Symptoms of ’Serr’ Walnut (Juglans RegiaL.)González R,CristiánLemus S,GamalierReginato,Gabino lack of pollen excess of pollen pollination Pistillate flower abscission (PFA) severely affects walnut (Juglans regia L.) production, mainly of the cultivar ’Serr’. A study on symptoms of flower abortion in walnut ’Serr’, induced by excess or lack of pollen, was carried out following the evolution of flowers and peduncles. Hand pollinated flowers, with different pollen concentrations: 0, 1, 5, 25, 50 and 100% pollen diluted (w/w) in talcum powder, showed external and internal abortion symptoms. External symptoms were recorded directly from the tree, while for internal symptoms, flower excisions stained with blue Toluidin-O at 0.05%, were analyzed under an optical microscope. Excess pollen abortion produced flowers with rapid damage. The growth rate was very low, involucre brightness was lost and the stigma turned necrotic, in contrast to the flower aborted from lack of pollen. Normal flowers continued growing to fruit harvest, without losing brightness. Excess pollen abortion induced flower drop, with or without attached peduncle. Two separation zones can be present: the distal and proximal areas of the peduncle. Peduncle scars allowed for differentiating abortion induced from excess or lack of pollen, or other reasons.info:eu-repo/semantics/openAccessInstituto de Investigaciones Agropecuarias, INIAChilean journal of agricultural research v.68 n.2 20082008-06-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392008000200008en10.4067/S0718-58392008000200008
institution Scielo Chile
collection Scielo Chile
language English
topic lack of pollen
excess of pollen
pollination
spellingShingle lack of pollen
excess of pollen
pollination
González R,Cristián
Lemus S,Gamalier
Reginato,Gabino
Pistillate Flower Abcission Symptoms of ’Serr’ Walnut (Juglans RegiaL.)
description Pistillate flower abscission (PFA) severely affects walnut (Juglans regia L.) production, mainly of the cultivar ’Serr’. A study on symptoms of flower abortion in walnut ’Serr’, induced by excess or lack of pollen, was carried out following the evolution of flowers and peduncles. Hand pollinated flowers, with different pollen concentrations: 0, 1, 5, 25, 50 and 100% pollen diluted (w/w) in talcum powder, showed external and internal abortion symptoms. External symptoms were recorded directly from the tree, while for internal symptoms, flower excisions stained with blue Toluidin-O at 0.05%, were analyzed under an optical microscope. Excess pollen abortion produced flowers with rapid damage. The growth rate was very low, involucre brightness was lost and the stigma turned necrotic, in contrast to the flower aborted from lack of pollen. Normal flowers continued growing to fruit harvest, without losing brightness. Excess pollen abortion induced flower drop, with or without attached peduncle. Two separation zones can be present: the distal and proximal areas of the peduncle. Peduncle scars allowed for differentiating abortion induced from excess or lack of pollen, or other reasons.
author González R,Cristián
Lemus S,Gamalier
Reginato,Gabino
author_facet González R,Cristián
Lemus S,Gamalier
Reginato,Gabino
author_sort González R,Cristián
title Pistillate Flower Abcission Symptoms of ’Serr’ Walnut (Juglans RegiaL.)
title_short Pistillate Flower Abcission Symptoms of ’Serr’ Walnut (Juglans RegiaL.)
title_full Pistillate Flower Abcission Symptoms of ’Serr’ Walnut (Juglans RegiaL.)
title_fullStr Pistillate Flower Abcission Symptoms of ’Serr’ Walnut (Juglans RegiaL.)
title_full_unstemmed Pistillate Flower Abcission Symptoms of ’Serr’ Walnut (Juglans RegiaL.)
title_sort pistillate flower abcission symptoms of ’serr’ walnut (juglans regial.)
publisher Instituto de Investigaciones Agropecuarias, INIA
publishDate 2008
url http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392008000200008
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AT lemussgamalier pistillateflowerabcissionsymptomsofrsquoserrrsquowalnutjuglansregial
AT reginatogabino pistillateflowerabcissionsymptomsofrsquoserrrsquowalnutjuglansregial
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