植物免疫诱抗剂对大豆苗期生长的影响
- Title:
- Effects of Plant Immune Inducers on Growth of Soybean Seedlings
- 摘要:
- 植物免疫诱抗剂具有诱导植物抗性和促进生长的作用，为比较8个不同植物免疫诱抗剂处理对大豆幼苗生长的影响差异，以浙鲜19为试验材料，对大豆幼苗的出苗率、株高、根长、叶长、叶宽、生物量等生物性状及叶片叶绿素相对含量（SPAD值）、多酚氧化酶（PPO）活性、苯丙氨酸解氨酶（PAL）活性等理化指标进行了测定。结果表明：不同植物免疫诱抗剂处理对大豆幼苗的生长表现各异，喷施海藻肥处理（HZF）可以增加出苗率、株高、鲜重生物量等指标，保康灵（BKL-2）处理对干重生物量的提高最为显著，达到1.91 g，喷施芸苔素内酯处理（YCS）可以明显增加大豆叶片SPAD值。所有处理中BKL-2处理的PPO和PAL活性相对于CK均有提高，分别提高41.18%和16.14%。BKL-2处理浓度4 g·L-1的效果优于2和6 g·L-1。BKL-2、HZF和MLT处理对大豆幼苗有明显的促生长作用，建议可在大豆生产上应用。
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