Effects of heat stress on germination and tube growth of stored pollen in Actinidia eriantha
Effects of heat stress on germination and tube growth of stored pollen in Actinidia eriantha
复制标题
热应激对毛花猕猴桃贮藏花粉萌发和花管生长的影响
DOI：
10.1080/01140671.2016.1159580
复制
发表时间：
2016-01-01
影响因子：
1.3
通讯作者：
Xu, X.
中科院分区：
文献类型：
--
作者：
Seyrek, U. A.;Tao, J.;Xu, X.
猕猴桃具有很高的商业价值，尤其富含维生素C。猕猴桃的成功坐果取决于包括花粉萌发和花粉管生长在内的几个生殖过程。以25个野生毛花猕猴桃品种为材料，研究了高温胁迫（27、30、33和36 ℃）对毛花猕猴桃花粉萌发和花粉管生长的影响。在施加热胁迫之前，将花粉在-20 ° C下储存6个月。结果表明，各处理中基因型间差异较大。8个基因型对发芽率的降低无显著影响。有些基因型的试管生长反应不稳定。MH 22、MH 30和MH 58被评价为更耐受的基因型。而MH 48和MH 67是最敏感的两种基因型。研究高温胁迫对花粉萌发和花粉管生长的影响，将有助于新品种的选育，鉴定出的耐高温基因型可用于未来的育种计划。
Kiwifruit has a high commercial value and is especially rich in vitamin C. Successful fruit set in kiwifruit depends on several reproductive processes including pollen germination and pollen tube growth. In this study, we investigated impacts of heat stress temperatures (27, 30, 33 and 36 degrees C) on pollen germination and pollen tube growth of 25 wild genotypes of Actinidia eriantha. Before heat stress application, pollens were stored at -20 degrees C for 6 months. The results showed great variation among genotypes in each treatment. Eight genotypes showed no significant change in the reduction of germination percentage. Some genotypes gave unsteady response in tube growth. MH22, MH30 and MH58 were evaluated as more tolerant genotypes. In contrast, MH48 and MH67 were the two most sensitive genotypes. The research of heat stress impact on pollen germination and pollen tube growth will be helpful for breeding new varieties and the identified tolerant genotypes can be used in future breeding programmes.