In order to study the effects of plant growth regulator soaking on cotton(Gossypium hirsu-tum L.)seed germination and seedling growth,observe the regulatory effects of different plant growth regulators on cotton seed germination,Xinluzao57 was taken as the experimental material,and the seeds were soaked with water as the control.The seeds were soaked with three plant growth regulators,which were coronatin,knotamine and brassicin.The seed germination test was conducted by sand culture method,and the germination characteristics,agronomic traits and photosynthetic characteristics of each treatment were determined.The results showed that the germination rate,ger-mination potential and net photosynthetic rate of seedlings were increased by 17.91％,12.79％and 10.23％,respectively,compared with ck treatment with 0.01 µmol/L.10 μg/L brassicin could increase the germination rate and vigor index of cotton,compared with ck increased by 10.84％and 19.58％respectively.The photosynthetic rate and cotyledon SPAD value of cotton were increased by 15.06％and 15.33％,respectively,when treated with 150 mg/L arthropyl amine compared with ck.Principal component analysis showed that 0.01 μmol/L corynetin treatment had the best effect,followed by 10 μg/L brassicin treatment.In conclusion,the three plant growth regulators,including coronatin,nicotin and brassicin,all had different regulatory effects on cotton growth and develop-ment,among which 0.01 µmol/L coronatin treatment had the best effect on cotton seed germination and seedling growth,followed by 10 µg/L brassicin treatment.
关键词
棉花/植物生长调节剂/萌发/生长发育
Key words
cotton/plant growth regulator/germination/growth and development
维普
万方数据