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首页> 外文期刊>Acta Horticulturae >Effects of Temperature on Pollen Viability and Stigma Receptivity in E. japonica 'Dawuxing'
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Effects of Temperature on Pollen Viability and Stigma Receptivity in E. japonica 'Dawuxing'

机译：温度对日本大五行花粉生活力和柱头容忍度的影响

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摘要

A series of experiments were carried out to determine the effects of temperature on pollen viability and stigma receptivity in E. japonica 'Dawuxing'. Flowering shoots of 'Dawuxing' loquat were held at temperatures ranging from 5 to 30°C. At low temperature (5°C), blooming and pollen grain dehiscence were delayed, but pollen viability was relatively high (55%) up to the 7th day, and ovule viability exceeded 90%. Blooming and pollen grain dispersion were promoted at temperature of 25-30°C, resulting in faster pollen germination but decreased stigma receptivity and viability (6.39%) of pollen grains cultured at 30°C, 7 days after anthesis (DAA). Stigma receptivity decreased in flowers at 30°C and 3 DAA, and there was no stigma receptivity at 5 DAA. These results indicated that flowers at the balloon stage might achieve pollination and fertilization upon weather improvement after cold and wet conditions.
机译：进行了一系列实验，以确定温度对粳稻“大五星”花粉活力和柱头接受性的影响。将“大五星” lo的开花枝保持在5至30°C的温度下。在低温（5℃）下，开花和花粉粒开裂被延迟，但直到第7天花粉活力仍较高（55％），胚珠活力超过90％。在花期后7天（DAA），在30°C下培养的花粉颗粒在25-30°C的温度下会促进花粉和花粉的散布，从而加快花粉的萌发速度，但降低其柱头接受性和活力（6.39％）。花朵在30°C和3 DAA下的柱头接受度降低，在5 DAA下没有柱头接受度。这些结果表明，在寒冷和潮湿的条件下，天气改善后，气球期的花朵可能会实现授粉和施肥。

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