Experimental Analysis of the Fertilization Process

Weterings, Koen; Russell, Scott D.

doi:10.1105/tpc.016873

Cited by 165 publications

(135 citation statements)

References 104 publications

(140 reference statements)

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“…Despite significant advances in our understanding of guidance mechanisms for the pollen tube and the transcriptional activity of the gametes [2][3][4], our knowledge on the actual mechanism of fertilization remains extremely limited. A remarkable recent study has shown, however, that the fusion between the sperm cells and the female gametes involves the conserved protein GENERATIVE CELL SPECIFIC 1 (GCS1) [5 ].…”

Section: Introductionmentioning

confidence: 99%

Endosperm: an integrator of seed growth and development

Berger

Grini

Schnittger

2006

Current Opinion in Plant Biology

167

107

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Section: Introductionmentioning

confidence: 99%

Endosperm: an integrator of seed growth and development

Berger

Grini

Schnittger

2006

Current Opinion in Plant Biology

167

107

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“…A estos factores se unen escasos estudios de investigación que permitan generar variedades y tecnologías, para garantizar un incremento cualitativo y cuantitativo de las cosechas (Hernández & Marrero, 2006;Peña, 2006). La fertilización se encuentra entre las prácticas de manejo que más influyen en el éxito del cultivo del gladiolo para flor de corte (Micheli, 1998), y se hace necesario que los fertilizantes se apliquen no solo en las dosis correctas (Segura et al, 2000;Weterings & Russell, 2004;Stewart et al, 2005), sino que las dosificaciones se distribuyan o ajusten a los requerimientos de la planta en cada fase de crecimiento y desarrollo (Gowda et al, 1988;Toledo et al, 2002).…”

Section: Introductionunclassified

Niveles de nitrógeno y su fraccionamiento en el cultivo del gladiolo para suelos Ferralíticos Rojos

Díaz

González

Hurtado³

et al. 2008

Pesq. agropec. bras.

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Nitrógeno en el cultivo del gladiolo 2 1 Niveles de nitrógeno y su fraccionamiento en el cultivo del gladiolo para suelos Ferralíticos RojosMaría Isabel Hernández Díaz (1) , Virginia Marrero González (1) , Mayra González Hurtado (2) , Julia Mirta Salgado Pulido (1) Términos para indexación: Gladiolo, floricultura, nutrición mineral. Nitrogen levels and their fractioning in gladiolus cultivation for Ferralitic Red soilsAbstract -The objective of this study was to evaluate growing nitrogen levels and application time of the nitrogen fertilizer in gladiolus cultivation. The experiment was carried out at No differences between nitrogen doses and fertilizer application time in quality variables of spikes and corms were observed. Nevertheless, with the variant 70 kg ha -1 of N, one half applied in plantation and the other half applied 60 days later, a higher spike percentage of commercial categories and a lesser number of stems of inferior quality were obtained. As for the plantation nutritional state, there is a positive relation between the applied nitrogen levels and the foliar content of this element.

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“…Reproduction in seed plants is a process requiring precise interactions between the sporophyte and gametophyte that require synchrony and communication (Weterings and Russell 2004). Between these organisms, barriers can be present to prevent self-fertilization.…”

Section: Discussionmentioning

confidence: 99%

“…This suggests a tendency to accept only one pollen tube to penetrate the ovule through the micropyle in vitro. Such selection is not a characteristic particular to Brachiaria but is considered as an important mechanism for preventing polyspermy and heterofertilization, the fertilization of the egg and central cells by sperm cells of different pollen tubes (Weterings and Russell 2004). However, in Gasteria the opening of the micropyle enlarges before fertilization and permits multiple penetrations (Willemse 1999).…”

Section: Discussionmentioning

confidence: 99%

“…Within the female gametophyte, the synergids are important in pollen tube attraction and pollen tube guidance and opening before fertilization (Jensen and Fisher 1968;Kapil and Bhatnagar 1975;Mogensen 1978, Van Went andWillemse 1984;Russell 1992;Weterings and Russell 2004;Dresselhaus 2006;Dresselhaus and Márton 2009). In maize, it was suggested that not only the synergids but also the egg cell could be involved in micropylar pollen tube guidance (Márton et al 2005).…”

Section: Discussionmentioning

confidence: 99%

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Toward in vitro fertilization in Brachiaria spp.

et al. 2010

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Brachiaria are forage grasses widely cultivated in tropical areas. In vitro pollination was applied to accessions of Brachiaria spp. by placing pollen of nondehiscent anthers on a solid medium near isolated ovaries. Viability and in vitro germination were tested in order to establish good conditions for pollen development. Comparing sexual to apomictic plants, apomictic pollen has more abortion after meiosis during the microspore stage and a lower viability and, of both types, only some plants have sufficient germination in a high sugar concentration. Using in vitro pollination with the sexual plant, the pollen tube penetrates into the nucellus and micropyle, but the embryo sac degenerates and collapses. In the apomictic B. decumbens, in vitro pollination leads to the transfer of the sperm nuclei into the egg cell and the central cell. The results are discussed according to normal fertilization and barriers in sexual and apomictic plants.

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Experimental Analysis of the Fertilization Process

Cited by 165 publications

References 104 publications

Endosperm: an integrator of seed growth and development

Endosperm: an integrator of seed growth and development

Niveles de nitrógeno y su fraccionamiento en el cultivo del gladiolo para suelos Ferralíticos Rojos

Toward in vitro fertilization in Brachiaria spp.

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