彭佃亮 唐玉海 张敬敏 王兴翠 杨文霞 李美芹

摘    要：为探究日光温室早春茬马铃薯的化控抗逆生产效果，以田园1号和希森6号马铃薯品种为材料，通过现蕾期叶面喷施100 mg·L-1多效唑与50 mg·L-1赤霉素，研究其对马铃薯块茎淀粉合成和积累的影响。结果表明，喷施多效唑显著提高了马铃薯块茎生长过程中蔗糖合成酶及蔗糖转化酶活性，而赤霉素则降低了马铃薯块茎的蔗糖合成酶及蔗糖转化酶活性，进而改变了马铃薯块茎蔗糖及还原糖含量;多效唑显著提高了马铃薯块茎产量及淀粉含量，而赤霉素处理结果与之相反：其中多效唑处理分别使田园1号、希森6号产量增加20.48%、21.95%，赤霉素处理分别使2个品种产量降低13.86%、24.91%。喷施外源多效唑与赤霉素通过调节马铃薯块茎合成酶活性进而调控马铃薯块茎淀粉积累及产量。

关键词：马铃薯;化控物质;温室;淀粉;产量

中图分类号：S532 文献标志码：A 文章编号：1673-2871（2021）11-080-05

Effect of exogenous application of PP333 and GA3 on starch synthesis and accumulation of the potato in greenhouse

PENG Dianliang， TANG Yuhai， ZHANG Jingmin， WANG Xingcui， YANG Wenxia， LI Meiqin

（Facility Horticulture Laboratory of Universities in Shandong/Weifang University of Science and Technology， Shouguang 262700， Shandong， China）

Abstract： In order to explore the chemical control and stress resistance production of early spring potato in solar greenhouse， the potato varieties Tianyuan 1 and Xisen 6 were used to study the effects of 100 mg·L-1 paclobutrazol and 50 mg·L-1 gibberellin on the starch synthesis and accumulation of potato tuber. The results showed that， compared with the control， the activities of sucrose synthetase and sucrose invertase were significantly increased with the application of paclobutrazol， and the activities of that were decreased using gibberellin， then the contents of sucrose and reducing sugar in potato tubers were changed; The yield of Tianyuan No. 1 and Xisen No. 6 was increased by 20.48% and 21.95% using paclobutrazol treatment， and the yield of the two varieties was reduced by 13.86% and 24.91% using gibberellin. Spraying exogenous paclobutrazol and gibberellin regulates potato tuber starch accumulation and yield by regulating potato tuber starch synthase activity.

Key words： Potato; Chemical control substance; Greenhouse; Starch; Yield

馬铃薯是菜粮兼备的农作物，对保障我国的粮食安全与丰富百姓菜篮子具有重要意义[1]。日光温室栽培是我国园艺作物重要的栽培方式之一，日光温室蔬菜栽培模式解决了我国北方地区冬春蔬菜生产及供应难题[2]。日光温室栽培马铃薯具有控制种薯退化、增强种性、减轻病虫害发生等优势。由于日光温室形成了特殊的小气候，低温弱光双重胁迫成为日光温室马铃薯冬春设施栽培生产的重要限制因素[3]。

淀粉是马铃薯块茎的主体成分，马铃薯淀粉的合成积累除受马铃薯品种特性影响外，还受外界环境与栽培技术措施的显著影响[4-7]。……