结实率低是限制该品种发挥增产潜力的主要限制因素。
The main limited factor of increasing yield was fruit rate too low.
五脉山黧豆的传粉系统不完善和虫害是结实率低的主要原因。
The faultiness of breeding system and pests destroying cause the low seed-set rate.
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.
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