川北山区马铃薯开花与产量研究

Study on the Potato's Blossomand Yield in North Sichuan Mountain Area

为了研究川北山区特殊地理条件下马铃薯开花和产量之间的关系,对川北山区122份马铃薯材料完全随机试验。分析表明,开花率与单株薯块重和每公顷产量呈极显著正相关,讨论认为,由于地理纬度的不同,可能与川北马铃薯生育期特殊性有关,在夏至前后,日照时间变化趋势由短到长(开花诱导信号)变为由长到短(结薯诱导信号),导致在短时间内马铃薯开花和结薯的光诱导信号均形成;这也可能与马铃薯开花和结薯对光周期诱导反应机理趋同有关,同一光周期信号导致开花诱导信号因子和结薯诱导信号因子在同一时间段内产生。聚类分析表明,122份马铃薯材料可以分为5类。

In order to study the relationship between the blossom and yield of potato under the specialgeographical condition of north Sichuan mountain, completely random test of 122 potato materials in northSichuan mountain area, showed the blossom rate significantly positive correlation with the tuber weight ofsingle plant and the production per hectare. We think, due to the difference of geographical latitude, this mightbe related to the special potato growth period of north Sichuan, around the summer solstice, the sunshine timechanges from short to long（blossom induction signal） returned to from long to short（tuber inducing signal）,resulted tuberization and blossom light induced signals were both formed in a short period of time; but alsomight be related to the convergence of the blossom and tuberization photoperiod induced reaction mechanism,the same light cycle signal causes the both induction signal factors of tuberization and blossom at the sametime. Clustering analysis showed that, 122 potatomaterialscouldbedivided into 5categories.