摘要
设立外源添加0、10、20、30、40mg/kg镉胁迫处理,探讨不同镉胁迫浓度对2个姬松茸品种产量、品质、镉吸收的影响,并研究其防控技术。结果表明:不同镉胁迫浓度对姬松茸J37和J1子实体农艺性状的影响有差异,随着外源镉浓度的增加,其子实体的菌盖重量、菌柄重量、菌盖厚度、菌盖直径、菌柄长度、菌柄直径等6个指标均呈逐渐降低的趋势。J37和J1第一、二、三潮次子实体产量、粗蛋白含量则随镉浓度的增大而明显下降,外源添加0、10、20、30、40 mg/kg镉胁迫处理的J37第一潮子实体产量比J1分别提高32.5%、45.1%、31.0%、38.2%、36.5%;镉胁迫对J1与J37的粗蛋白含量影响敏感点分别为10 mg/kg和20 mg/kg;当镉浓度为20 mg/kg时,J1的多糖含量比J37高8.2%;当镉浓度依次增加时,J1的镉富集量均高于J37。10 mg/kg和20 mg/kg镉胁迫处理J1和J37后,施用45 mg/kg CaSO4,对镉胁迫的毒害缓解作用最佳,施钙肥对镉胁迫毒害的平均防控率分别达36.2%和47.6%。栽培基质中镉浓度达20mg/kg,是姬松茸耐受镉毒害的敏感节点或者转折阈值,其第一潮次产量下降幅度超过40%;姬松茸耐受生长基质镉胁迫浓度要控制在10 mg/kg范围内;姬松茸子实体重量或者菌盖直径、菌柄直径变小可作为生长前期镉胁迫产生毒害的直观判断依据。
Cadmium(Cd)accumulation is an important problem influencing Agaricus blazei industry.Therefore,breeding low-Cd content varieties and exploring Cd prevention and control technology in A.blazei were of great importance.In this study,the effect of Cd on their yield and cadmium absorption of two varieties of A.blazei J37 and J1 under Cd stress treatments were investigated.The effect of CaSO4application on cadmium absorption of A.blazei also was investigated.The effects of different Cd stress treatments on the traits of fruit bodies of J37 and J1strains.With the increase of exogenous Cd concentration,the pileus weight,stipe weight,pileus thickness,pileus diameter,stipe length,and stipe diameter decreased,respectively.The yield of J37 under different Cd stress increased by 32.5%,45.1%,31.0%,38.2%and 36.5%than those of J1 in the first tides,respectively.Moreover,the yield of J37 was also higher than that of J1 in the second and third tides.The sensitive Cd concentration on protein quality of J1 and J37 was 10 mg/kg and 20 mg/kg,respectively.Under 20 mg/kg Cd treatment,the polysaccharide content of J1 was 8.2%higher than that of J37.But the Cd accumulation in J1 was all higher than that of J37 with the increase of Cd stress.Under the conditions of 10 mg/kg and 20 mg/kg Cd stress,the effects of CaSO4application with 45 mg/kg on cadmium poisoning of J1 and J37 were the most obvious.The average control rate of cadmium poisoning by applying calcium fertilizer was 36.2%and 47.6%,respectively.Under the conditions of this experiment,20 mg/kg cadmium content in the culture was the sensitive node of A.blazei to tolerate cadmium poisoning,and the yield of A.blazei decreased by more than 40.0%in the first tide.When the Cd concentration in the culture was less than 10 mg/kg,A.blazei could tolerate Cd stress.Results also showed that the weight or cap diameter or stalk diameter might be used as a direct indicator for judging the Cd toxicity.
作者
陈华
刘朋虎
叶菁
林怡
翁伯琦
王义祥
CHEN Hua;LIU Penghu;YE Jing;LIN Yi;WENG Boqi;WANG Yixiang(Agricultural Ecology Institute,Fujian Academy of Agricultural Sciences,Fuzhou,Fujian 350003,China;National ResearchCenter of Fungus Engineering Technology,Fujian Agriculture and Forestry University,Fuzhou,Fujian 350002,China;Fujian KeyLaboratory of Agro-ecological Processes in Red Soil Hilly Region,Fuzhou,Fujian 350003,China)
出处
《热带作物学报》
CSCD
北大核心
2022年第12期2471-2481,共11页
Chinese Journal of Tropical Crops
基金
中央引导地方科技项目(No.2021L3021)
福建省科技厅农业引导性项目(No.2020N0007)
福建省红壤山地农业生态过程重点实验室开放课题(No.Aephrs-202001)。
关键词
姬松茸
镉胁迫
子实体
农艺性状
产量
镉含量
Agaricus blazei Murill
cadmium stress
sporocarp
agronomic trait
yield
cadmium content
