Effect of drought stress on growth indicators of Cyperus esculentus L.during seedling stage
SUN Rui
WANG Rui
GAO Haijuan
WANG Ruoding
LI Wei
ZHANG Jun
LI Shasha
LIU Jielin
Abstract：The experiment used four Cyperus esculentus L.varieties(Heiyousha No.2,HB002,Xiaochangli,and NM001)as experimental materials.Polyethylene glycol 6000(PEG-6000)was employed to simulate drought stress to investigate the effects of different PEG-6000 concentrations(0%,10%,20%,and 30%)on the seedling growth of different varieties of Cyperus esculentus L.The indexes of plant height,leaf length,leaf width,stem diameter,fresh seedling weight,and tillering number per plant were measured at seedling stage,and the drought-resistant ability of Cyperus esculentus L.was analyzed.The results showed that PEG-6000 treatment reduced plant height and leaf length in Heiyousha No.2,NM001,and Xiaochangli to varying degrees.With the increase of PEG-6000 concentration,the leaf width and stem diameter of Heiyousha No.2 and Xiaochangli decreased first,then increased and then decreased.The stem diameter of Xiaochangli treated with PEG-6000 concentration was the lowest,and the stem diameter of Xiaochangli treated with CK and 10%PEG-6000 treatment was extremely lower than that of other varieties(P<0.01).The fresh weight of Xiaochangli treated with CK and 10%PEG-6000 was extremely lower than that of other varieties at the same concentration(P<0.01).The fresh weight of Xiaochangli treated with 20%and 30%PEG-6000 was significantly lower than that of other varieties(P<0.05).Under 30%PEG-6000 treatment,the fresh seedling weight of HB002 was significantly higher than that of Heiyousha No.2 and NM001(P<0.05),and extremely higher than that of Xiaochangli(P<0.01).Principal component analysis ranked the drought resistance of the four varieties as:HB002>NM001>Heiyousha No.2>Xiaochangli.The study shows that HB002 exhibits optimal growth under simulated drought conditions,making it a high-quality drought-tolerant germplasm for tiger nut.
Keywords：Cyperus esculentus L.growth indicatorsdrought resistancedrought stress
Publication Date：2025-03-16
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 91-96 )