Effects of Plant Immune Inducers on Growth of Soybean Seedlings
Plant immune inducers have the effects of inducing plant resistance and promoting growth,in order to compare the effects of eight different plant immune-inducing treatments on the growth of soybean seedlings,taking Zhexian 19 as material,the biological traits such as seedling emergence rate,plant height,root length,leaf length,leaf width,biomass,and physicochemical indexes such as leaf chlorophyll relative content(SPAD)value,polyphenol oxidase(PPO),and phenylalanine ammonia-lyase(PAL)activities,were measured.The results showed that the growth performance of soybean seedlings varied with different plant immune inducer treatments.Spraying seaweed fertilizer treatment(HZF)could increase the indexes of seedling emergence rate,plant height,and fresh weight biomass,and the treatment BKL-2 had the most significant increase in dry weight biomass with the value of 1.91 g.Spraying brassinolide treatment(YCS)could significantly increase the value of SPAD in soybean leaves.The treatment BKL-2 was an increase in all treatments on PPO activity and PAL activity relative to CK with 41.18％and 16.14％,respectively.The plant immune inducer concentration of 4 g·L-1 in treatment BKL-2 was better than 2 and 6 g·L-1.BKL-2,HZF and MLT treatments had significant growth promoting effects on soybean seedlings and are suggested to be applied in soybean production.
国家科技期刊平台
NSTL
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