本试验通过红肉火龙果和白肉火龙果花的外形、花粉粒大小和生活力的差异比较，探究红肉火龙果授粉结实率低的原因。
To find the reason of low seed-setting of red Pitaya, it compared flower shape, pollen size and pollen viability between red pitaya and white pitaya flower.
火龙果按其果皮果肉颜色可分为红皮白肉、红皮红肉、黄皮白肉3大类。
Pitaya fruit according to their skin colour can be divided into the red one white meat, red one red meat, yellow skin white meat 3 kinds big.
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