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The effect of three plant bioregulators on pollen germination, pollen tube growth and fruit set in almond [Prunus dulcis (Mill.) D.A. Webb] cvs. Non Pareil and Carmel Electron. J. Biotechnol.
Maita,Segundo; Sotomayor,Carlos.
Background In commercial almond [Prunus dulcis (Mill.) D.A. Webb] orchards in Chile, the percentage of fruit set is low and commonly reaches 5–30%. As almond trees bloom during a cool period and also suffer from self-incompatibility, any factor that can improve pollination, pollen germination and pollen tube growth or extend the effective pollination period, such as the application of plant bioregulators (PBRs), should be beneficial for fruit production. Results Three plant bioregulators (PBRs): brassinolide (BL), gibberellic acid (GA3) and kinetin (KN) were evaluated for pollen germination and pollen tube growth in vitro, as well as for fruit set in almond cultivars Non Pareil and Carmel, in central Chile, during the 2013 and 2014 seasons. For pollen...
Tipo: Journal article Palavras-chave: Fruit set; Plant bioregulators; Pollen germination; Pollen tube growth; Prunus dulcis.
Ano: 2015 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582015000500010
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Efficacy and mode of action of blossom thinners on "Fuji More" apple trees. Repositório Alice
MARCHIORETTO, L. de R.; RUFATO, A. de R.; AMARAL, L. O. do; RIBEIRO, A. M. A. de S..
The objective of this study was to investigate the mechanism of action of the treatments: Ammonium thiosulfate (ATS), benzyladenine (BA), GA4+7+BA, foliar fertilizer, lime sulphur (LS), LS+mineral oil, mineral oil, NAA, urea, and vegetal oil in the interaction of these treatments with: 1) pollen grain germination, 2) stigma/style pollen tube (PT) development, and 3) the effectiveness of the treatments in field conditions on decreasing crop load and enhancing fruit quality of "Fuji More" apple trees. In experiment 1 it was evaluated the effect of the treatments in inhibiting the in vitro pollen germination of "Maxi Gala" apples. In Experiment 2 it was evaluated in vivo "Maxi Gala" pollen germination in "Fuji" pistils to assess the effect of the treatments...
Tipo: Artigo de periódico Palavras-chave: Pollen tube stoppage; Pollen tube growth; Thinning; Alternative; Full bloom; Mechanism of action.
Ano: 2019 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1102756
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A new case of late-acting self-incompatibility in Capparis L. (Brassicaceae): C. jacobinae Moric. ex Eichler, an endemic andromonoecious species of the Caatinga, Pernambuco State, Brazil Acta Botanica
Primo,Luis Miguel; Machado,Isabel Cristina.
We studied the reproductive system of Capparis jacobinae Moric ex Eichler (Brassicaceae), based on controlled hand-pollination and observation of pollen tube growth made in a fluorescence microscope. Of 105 self-pollinated flowers only one produced fruits (success = 0.95%), all the other flowers abscised at the same time, between the eighth and tenth day after anthesis. Nevertheless, self- and cross-pollinated pollen tubes reached the micropyle. The rate of penetrated ovules in self-pollinated flowers was lower during the first 24 h after pollination; thereafter this rate was similar between self- and cross-pollinated flowers for treatments of 48 h, 72 h and 96 h after pollination. In addition, we carried out two indirect estimates of the reproductive...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Andromonoecy; Capparaceae; Pollen-ovule ratio; Pollen tube growth; Sexual system.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062009000300016
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