辣椒杂志2026，Vol.24Issue(1)：20-24,41,6.
褪黑素引发对辣椒种子萌发特性及幼苗干旱胁迫的缓解研究
Effects of Melatonin Priming on Seed Germination Characteristics and Drought Stress Alleviation in Pepper Seedlings
摘要
Abstract
To explore the alleviating effect of melatonin on drought stress in pepper(Capsicum annuum L.),this study simulated a drought environment using PEG-6000 and determined the indicators of seed germination and seedling growth of pepper under different concentrations of melatonin priming.The results showed that melatonin priming treatment outperformed the control(CK)in germination rate,germination potential and germination index.Drought stress(DS)significantly reduced plant height(8.36±0.13 cm),fresh weight per plant(0.22±0.01 g),dry weight per plant(0.03±0.001 7 g),chlorophyll a(1.21±0.12 mg/g),chlorophyll b(0.39±0.05 mg/g)and total chlorophyll(1.60±0.13 mg/g)contents of pepper seedlings(P<0.05).Under the 150 μmol/L melatonin concentration(MT3)treatment,plant height(10.27±0.25 cm),fresh weight per plant(0.45±0.03 g),dry weight per plant(0.07±0.004 8 g),activities of SOD(269.57±37.12 U/g FW),POD(137.36±11.85 U/g FW)and CAT(103.30±2.65 U/g FW),as well as soluble sugar content(2.77±0.31 mg/g FW)of pepper seedlings all reached the maximum values except for CK,while the MDA content(5.38±0.79 nmol/g FW)was the minimum except for CK.The results indicated that melatonin priming can significantly promote pepper seed germination and alleviate the effects of drought stress on pepper seedlings possibly by coordinating the antioxidant system and osmotic regulation.关键词
褪黑素/辣椒/引发/干旱胁迫Key words
melatonin/pepper/priming/drought stress引用本文复制引用
李金玲,梁增文,梁溪原,杨朝霞,梁友忠,郑冬贺,信国滨,袁艳芳,贺秀英,张宝玺..褪黑素引发对辣椒种子萌发特性及幼苗干旱胁迫的缓解研究[J].辣椒杂志,2026,24(1):20-24,41,6.基金项目
山东省技术创新引导计划(中央引导地方科技发展资金)"设施辣椒优质高效栽培技术集成与示范"项目(YDZX2023091) （中央引导地方科技发展资金）
