摘要
为研究不同外源钙及其施用方式对小麦萌发期和苗期生长的抗旱性影响,以新春37号为材料,采用PEG-6000模拟干旱,对比糖醇钙、钙中钙、喜毛钙和索纳米等4种不同浓度外源钙在浸种与叶面喷施下的效应差异。结果表明,PEG-6000胁迫下,不同外源钙浸种与叶面喷施对小麦萌发期与幼苗期生长调控具有显著差异,并且随着处理浓度的增大呈先上升后下降的趋势。通过对各个处理及指标的耐旱隶属函数值进行加权得出综合评价值,喷施处理下的耐旱性评价总体优于浸种处理,其中PEG-6000胁迫下不同外源钙对小麦浸种各处理综合评价值均值为0.4350,而不同外源钙对小麦叶面喷施处理综合评价值均值为0.5163;浸种处理下,在100 mg/L喜毛钙处理浓度时,耐旱综合评价值为最高,属于强耐旱型;苗期叶面喷施处理下,在250 mg/L喜毛钙处理浓度时,耐旱综合评价值均为最高,属于强耐旱型。因此,在100 mg/L喜毛钙处理浓度下浸种和250 mg/L喜毛钙处理浓度下对小麦苗期叶面喷施对干旱胁迫的耐受性更好。
To study the effects of different exogenous calcium sources and their application methods on the drought resistance of wheat(Triticum aestivum L.)during the germination and seedling growth stages,using Xinchun No.37 as the material and PEG-6000 to simulate drought,the effect differences of four different concentrations of exogenous calcium sources,namely sugar alcohol calcium,calcium-in-calcium,Ximao calcium and Nano-sorghum,under seed soaking and foliar spraying were compared.The results showed that under PEG-6000 stress,different exogenous calcium seed soaking and foliar spraying had significant differences in the growth regulation of wheat during the germination and seedling stages,and showed a trend of first increasing and then decreasing with the increase of treatment concentration.The comprehensive evaluation value was obtained by weighting the drought tolerance membership function values of each treatment and index.The drought tolerance evaluation under the spray treatment was generally better than that under the seed soaking treatment.Among them,the average comprehensive evaluation value of different exogenous calcium sources for each treatment of wheat seed soaking under PEG-6000 stress was 0.4350,while the average comprehensive evaluation value of different exogenous calcium sources for wheat foliar spraying treatment was 0.5163.Under seed soaking treatment,the comprehensive evaluation value of drought tolerance was the highest at a treatment concentration of 100 mg/L of pile-loving calcium,which belonged to the strongly drought-tolerant type.Under the foliar spraying treatment at the seedling stage,the comprehensive drought tolerance evaluation value was the highest at the treatment concentration of 250 mg/L of pile-loving calcium,which belonged to the strong drought-tolerant type.Therefore,seed soaking at a concentration of 100 mg/L of pile-tolerant calcium and foliar spraying at a concentration of 250 mg/L of pile-tolerant calcium during the seedling stage showed better tolerance to drought stress.
作者
梁晶
张军高
龚静云
周小云
张少民
周广威
雷斌
LIANG Jing;ZHANG Jungao;GONG Jingyun;ZHOU Xiaoyun;ZHANG Shaomin;ZHOU Guangwei;LEI Bin(Institute of Agricultural Resources and Environment,Xinjiang Academy of Agricultural Sciences/Xinjiang Crop Chemical Control Engineering Technology Research Center,Urumqi 830091,China)
出处
《种子》
北大核心
2025年第6期165-174,共10页
Seed
基金
黄土高原特色作物优质高效生产省部共建协同创新中心开放课题(SBGJXTZXKF-9)
农业农村部荒漠绿洲作物生理生态与耕作重点实验室开放课题(25107020-202203)
新疆维吾尔自治区重点研发项目(2022B02001-2)
新疆维吾尔自治区科技支疆项目(2022E02002)。
关键词
小麦
钙
干旱
浸种
喷施
苗期
Triticum aestivum L.
calcium
drought
soaking seeds
spraying
seedling stage
