Stigmatic receptivity of peach flowers submitted to heat stress
Document title: Stigmatic receptivity of peach flowers submitted to heat stress
Journal: Acta scientiarum. Agronomy
Database: PERIÓDICA
System number: 000460046
ISSN: 1679-9275
Authors: 1
1
1
2
3
Institutions: 1Empresa Brasileira de Pesquisa Agropecuaria, Clima Temperado, Pelotas, Rio Grande do Sul. Brasil
2Texas A&M University, Department of Horticultural Sciences, College Station, Texas. Estados Unidos de América
3Universidade Federal de Pelotas, Departamento de Matematica e Estatistica, Capao do Leao, Rio Grande do Sul. Brasil
Year:
Volumen: 42
Country: Brasil
Language: Inglés
Document type: Artículo
Approach: Experimental, analítico
English abstract Because of climatic changes, the cultivation of temperate climate plants such as peach in subtropical climates has become a challenge. In these areas, temperatures exceeding 25°C often occur during the pre-flowering and flowering phases. The high temperature causes damages by acting during the early stages of pollen-pistil interaction processes. The objective of this work was to evaluate the stigmatic receptivity of peach flowers at 18°C and 30°C. The pollen adherence was evaluated as well as the germination and presence of pollen tubes in the transmitting tissue of the style. The genotypes responded differently to temperature. ‘Granada,’ ‘Diamante’, and ‘Sensação’ had a stigmatic receptivity that was less affected when flowers were exposed to the higher temperature. Most genotypes showed a reduction in the number of pistils with pollen tubes growing in the style, particularly when pollination was delayed
Disciplines: Agrociencias,
Biología
Keyword: Frutales,
Reproducción y desarrollo,
Durazno,
Prunus persica,
Viabilidad del polen,
Tubo polínico,
Floración,
Estrés térmico
Keyword: Fruit trees,
Reproduction and development,
Peach,
Prunus persica,
Pollen viability,
Pollen tube,
Flowering,
Heat stress
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