Saline irrigation improves survival of forage sorghum but limits growth and increases toxicity

IF 4.2 3区 生物学 Q1 PLANT SCIENCES
Plant Biology Pub Date : 2025-03-12 DOI:10.1111/plb.70009
E. Fu, H. Myrans, R. M. Gleadow
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引用次数: 0

Abstract

Abstract Image

盐水灌溉提高了饲用高粱的成活率,但限制了其生长并增加了毒性。
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。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Plant Biology
Plant Biology 生物-植物科学
CiteScore
8.20
自引率
2.60%
发文量
109
审稿时长
3 months
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.
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