【摘要】 HCl、NaOH、Na2CO3、NaCl、赤霉素(GA3)、芸薹素内酯(BR)浸种处理,探讨溶液浓度、浸种时间对野慈姑(Sagittaria trifolia Linn.)种子萌发的影响。结果表明,NaOH溶液浸种处理可以作为快速解除野慈姑种子休眠、提高发芽率的方法,最佳处理为25%NaOH溶液浸种4 h,可使野慈姑种子萌发率达73.00%。HCl溶液浸种处理仅能解除部分野慈姑种子的休眠,20%HCl溶液浸种4 h野慈姑种子的发芽率最高,为48.33%。Na2CO3、NaCl、GA3、BR溶液浸种处理,野慈姑种子的最高发芽率分别仅为10.33%、9.33%、11.33%、9.67%,不能用于解除野慈姑种子的休眠。更多还原

【Abstract】 The effect of solution concentration of HCl,NaOH,Na2CO3,NaCl,gibberellic acid( GA3) and brassinolide( BR) and seed soaking time on the germination of Sagittaria trifolia was studied. Soaking the seeds in 25% NaOH for four hours was the fastest method to break dormancy and increase germination rate to 73%. Soaking in 20% HCl also for four hours partly broke dormancy and improved germination to 48%. The highest S. trifolia germination rate obtained by soaking the seed in GA3,Na2CO3,BR,and NaCl was 11%,10%,10%,and 9% respectively,but these chemicals were not suitable for breaking dormancy.更多还原