河南农业科学2025，Vol.54Issue(5)：41-48,8.DOI:10.15933/j.cnki.1004-3268.2025.05.005
褪黑素对干旱胁迫下马铃薯生长发育、光合特性和产量的影响
Effects of Melatonin on Growth,Photosynthetic Characteristics and Yield of Solanum tuberosum L.under Drought Stress
摘要
Abstract
The 10%PEG6000 solution was employed to simulate drought stress,and the effects of melatonin concentrations[0(CK),50(W1),100(W2),150(W3),200(W4)μmol/L]on the growth,photosynthetic characteristics and yield of potato(Solanum tuberosum L.)were studied under drought stress,so as to provide theoretical guidance for cultivation of potato under drought stress.The results showed that different concentrations of melatonin could promote the growth and development of potato under drought stress,and then increase the yield.With the increase of melatonin concentration,growth and development,photosynthetic characteristics and yield of potato increased first and then decreased,and W2 treatment was the highest.Compared with CK,the plant height,stem diameter,leaf thickness and root length of W2 treatment increased by 24.79%,13.89%,61.11%and 29.95%at 17 d after spraying,respectively;Dry weight and fresh weight of root,dry and fresh weight of aboveground part increased by 36.95%,23.32%,156.52%and 42.05%,respectively;SPAD value,net photosynthetic rate(Pn),stomatal conductance(Gs),intercellular CO₂concentration(Ci)and transpiration rate(Tr)increased by 63.60%,41.34%,30.45%,44.73%and 114.56%,respectively;Yield per plant and tuber number per plant increased by 71.04%and 150.00%,respectively.In conclusion,melatonin can promote the growth and development,increase the yield of potato under drought stress,and 100 μmol/L melatonin has the best effect.关键词
马铃薯/褪黑素/干旱胁迫/生长发育/产量Key words
Solanum tuberosum L./Melatonin/Drought stress/Growth and development/Yield分类
农业科技引用本文复制引用
范志远,尉辉,赫宇恒,顾城志,李锦超,冯春静,刘素慧..褪黑素对干旱胁迫下马铃薯生长发育、光合特性和产量的影响[J].河南农业科学,2025,54(5):41-48,8.基金项目
山东农业工程学院校级高层次人才科研项目(2024GCCZR-25) （2024GCCZR-25）
