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引用次数: 0
摘要
中盐水被认为是饲用高粱(sorghum bicolor × sorghum bicolor nothosubsp)等作物的潜在灌溉资源。Drummondii)在干旱易发地区。然而,盐度如何影响高粱的生长和潜在毒性尚未完全了解。高粱能产生氰化葡萄糖苷苦胆碱,这种物质会导致放牧动物氰化氢(氢氰酸)中毒。为了解决这个问题,进行了两个温室实验。试验1评价了高粱对一系列盐处理(0、12.5、25、50、100和150 mM NaCl)的耐性。试验2通过不浇水(干旱)、淡水灌溉和50 mM NaCl灌溉三种处理,评估中度盐水灌溉是否能缓解高粱的干旱胁迫。两组疗程均为7周。在试验1中,尽管在NaCl浓度高达50 mM时高粱能够阻止钠进入蒸腾叶片,但低至25 mM NaCl显著降低了生物量。叶面苦胆素浓度与盐度呈正相关,超过了≥12.5 mM NaCl对牛的安全阈值。在试验2中,中盐水有效缓解了高粱的干旱胁迫,与50 mM NaCl处理相比,干旱处理显著降低了高粱的生长和光合作用。虽然干旱期间适度的盐水灌溉可以促进高粱的生存和生长,但应监测其氰苷浓度,以确保放牧动物的安全。
期刊介绍:
Plant Biology is an international journal of broad scope bringing together the different subdisciplines, such as physiology, molecular biology, cell biology, development, genetics, systematics, ecology, evolution, ecophysiology, plant-microbe interactions, and mycology.
Plant Biology publishes original problem-oriented full-length research papers, short research papers, and review articles. Discussion of hot topics and provocative opinion articles are published under the heading Acute Views. From a multidisciplinary perspective, Plant Biology will provide a platform for publication, information and debate, encompassing all areas which fall within the scope of plant science.