PAPILLAR INTEGRITY AS AN INDICATOR OF STIGMATIC RECEPTIVITY IN KIWIFRUIT (ACTINIDIA-DELICIOSA)
PAPILLAR INTEGRITY AS AN INDICATOR OF STIGMATIC RECEPTIVITY IN KIWIFRUIT (ACTINIDIA-DELICIOSA)
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DOI：
10.1093/jxb/46.2.263
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发表时间：
1995-02-01
影响因子：
6.9
通讯作者：
HERRERO, M
中科院分区：
文献类型：
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作者：
GONZALEZ, MV;COQUE, M;HERRERO, M
柱头接受性是限制猕猴桃坐果的主要因素。这项工作的目的是了解是什么决定了这个物种的柱头接受性的停止。通过柱头维持花粉萌发的能力分析了猕猴桃的柱头受感性，柱头受感性与柱头发育和退化有关。猕猴桃花的柱头有一个乳突状的表面，从花期开始被丰富的渗出物覆盖，乳突是单细胞的，含有许多酚类沉积物。在花的一生中，这些乳突逐渐失去肿胀，而柱头分泌增加，直到花后5天，乳突开始破裂，乳突内容物被释放到萌发培养基中。花期柱头接受度较高，持续4 d，花期5 d后柱头接受度急剧下降，2 d后柱头接受度为零。柱头接受性的模式与乳突完整性的模式非常吻合，表明柱头接受性依赖于这种完整性。由于乳头完整性可以很容易地评估柱头臂，这一标准可以作为一个快速的方法来估计柱头接受性。
Stigmatic receptivity is a major factor limiting fruit set in kiwifruit (Actinidia deliciosa). The aim of this work was to know what determines the cessation of stigmatic receptivity in this species. Stigmatic receptivity has been analysed in kiwifruit through the capacity of the stigma to sustain pollen germination and has been related to stigmatic development and degeneration. The stigma of kiwifruit flowers has a papillate surface which from anthesis is covered with an abundant exudate, Papillae are unicellular and contain a number of phenolic deposits. During the lifetime of the flower these papillae gradually lose turgidity, while stigmatic secretion increases until 5 d after anthesis when papillae start rupturing and the papillar content is liberated into the germination medium. Stigmatic receptivity is high at anthesis and lasts for the next 4 d. However, it drastically decreases 5 d after anthesis and it is nil 2 d later. The pattern of stigmatic receptivity closely fits that of papillar integrity, indicating that stigmatic receptivity relies on this integrity. Since papillar integrity can easily be evaluated in stigmatic arms, this criterion can be used as a quick method to estimate stigmatic receptivity.