Pollen-tube growth behaviour in ‘Chanee’ and ‘Monthong’ durians (Durio zibethinus L.) after selfing and reciprocal crossing
Pollen-tube growth behaviour in ‘Chanee’ and ‘Monthong’ durians (Durio zibethinus L.) after selfing and reciprocal crossing
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自交和互交后“Chanee”和“Monthong”榴莲 (Durio zibethinus L.) 的花粉管生长行为
DOI：
10.1080/14620316.2007.11512313
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发表时间：
2007
期刊：
影响因子：
--
通讯作者：
T. Chang
中科院分区：
文献类型：
--
作者：
K. Lo;I. Chen;T. Chang
总结两个榴莲品种，“Monthong”和“Chanee”，进行了调查，在雌蕊授粉后的过程和自花授粉或正反交后坐果的百分比。每个品种的花粉粒在柱头上都能正常萌发并向下生长。在所有处理中，穿透胚珠的百分比超过40%。然而，在'Chanee'自花授粉后坐果率极低。2002年和2003年，'Chanee'自花授粉后35 d的坐果率为0%，而'Monthong' 2002年为6.9%，2003年为23.6%。异花授粉后坐果率显著提高。根据花粉管生长行为和自花授粉和两个杂交组合之间的果实下降的不同步性，可能是“Monthong”和“Chanee”榴莲具有合子后障碍自交，特别是在“Chanee”。
Summary Two durian cultivars, ‘Monthong’ and ‘Chanee’, were investigated with respect to post-pollination processes in the pistil and the percentages of fruit set after self-pollination or reciprocal crossing. Pollen grains from each cultivar germinated normally on both stigmas and grew downwards healthily. The percentage of penetrated ovules exceeded 40% in all treatments. However, fruit set after self-pollination in ‘Chanee’ was extremely low. The percentage of fruit set in ‘Chanee’ 35 d after self-pollination (DAP) was 0% in 2002 and 2003, while that of ‘Monthong’ was 6.9% in 2002, and 23.6% in 2003. The percentage of fruit-set after cross-pollination was significantly higher. On the basis of pollen-tube growth behaviour and the non-synchronisation of fruit drop between self-pollination and the two cross combinations, it may be that ‘Monthong’ and ‘Chanee’ durians possess post-zygotic barriers to selfing, especially in ‘Chanee.’