聚丙烯酰胺对几种植物种子萌发及生长的影响

Effects of polyacrylamide on germination and growth of several plant seeds.

用不同浓度聚丙烯酰胺溶液处理苜蓿、狗尾草、沙棘等8种草本、灌木植物种子发芽试验结果表明,聚丙烯酰胺溶液浓度为0.1～1.0g/kg时,对鸡眼草、沙棘、苜蓿、草木樨种子萌发有促进作用,对其幼苗苗高、根长的影响除个别有较小抑制作用外,均表现促进作用。当溶液浓度为0.5g/kg时,对兴安胡枝子种子幼苗的根系生长则表现出显著抑制作用,而对荆条种子萌发表现出极显著抑制作用。聚丙烯酰胺各处理浓度均对黄白草、狗尾草萌发表现出极显著或显著抑制作用,而对其幼苗苗高、根长表现出显著促进或较小的抑制作用。

The tests of germination and growth on the seeds of 8 herbaceous and fruticose plants ( Medicago satitia , Se-tria viridis , Hippophae rhamnoides et al.) treated with polyacrylamide (PHP) at different concentrations show that PHP can promote the germination of the seeds for Kurnmeroivia striata , Hippophae rhamnoides , Medicago saliva , Me-liloeus suaveolens at 0.1 - 1.0g/kg of the rate. It can also promote the germination of the seedlings and length of the roots except that individual treatment has less inhibition. PHP formulations may obviously inhibit the growth of roots of Lespe-deza dararica seedlings at 0. 5g/kg of the rate, and may also inhibit the germination of the seeds for Vitex chinensis. PHP may not only express the most significantly and notably inhibition to germination of Themedatriandra Forsk var japnica Makino , Setria viridis, but also significantly promote or has less inhibition to the height of the seedlings and the length of the roots, regardless of the rates.