“坐果”是农林行业的专用术语，通俗的讲就是植株授粉，胚珠受精。初步形成结果条件的意思。坐果与结果概念不同前者多指早期的胚的膨大，后者多指胚发育到后期形成果实。授粉受精后子房受花粉分泌的生长素的作用开始膨大并稳定的过程。
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CPPU是一种新型植物生长调节剂，具有促进细胞分裂、促进座果、诱导单性结实等特点，在农业、园艺等领域有广泛的应用。
The CPPU is a kind of novel plant growth regulator which has higher activities in promoting cell division, fruit setting and inducing parthenocarpy.
叶片较小，适应性广，极易座果。
Blade is lesser, wide adaptability, extremely easy fruit-set.
叶片的过氧化氢酶活性与座果率呈负相关。
It showed the negative correlation between the catalase activity and fruit-bearing rate.
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