Salt tolerance at germination and early growth of two forage grasses growing in marshy habitats
Salt tolerance at germination and early growth of two forage grasses growing in marshy habitats
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DOI：
10.1016/j.envexpbot.2004.09.005
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发表时间：
2005-11-01
影响因子：
5.7
通讯作者：
Hinglajia, H
中科院分区：
文献类型：
--
作者：
Joshi, AJ;Mali, BS;Hinglajia, H
0-25 pptNaCl、KCl、MgCl_2、Na_2SO_4、MgSO_4和海水对两种盐沼草种种子萌发的影响，兔耳草和马德拉斯帕塔努斯孢子菌。在恒定（25 ℃）和交替（15 ℃/32 ℃）温度下进行检测。90%和99%的种子在蒸馏水中萌发，但在5 pptNaCl、KCl和8 dSm（-1）海水中没有记录到萌发。与对照相比，在16-48 dS m（-1）海水浓度下生长的70天龄幼苗的芽长和鲜重较小，但根长和干重较大。盐胁迫下，紫茎泽兰幼苗体内脯氨酸、苯丙氨酸、脯氨酸和谷氨酸含量均较高。lagopoides和S. madraspatanus，分别。葡萄糖和半乳糖在A.此外，S. madraspatanus在海水浓度下培养的幼苗中更大。(c)2004 Elsevier B. V.保留所有权利。
Effects of 0-25 ppt NaCl, KCl, MgCl2, Na2SO4, MgSO4 and seawater on seed germination in two salt marsh grasses viz., Aeluropus lagopoides Linn. and Sporobolus madraspatanus Bor. were examined at constant (25 degrees C) and alternating (15 degrees C/32 degrees C) temperatures. 90 and 99% seeds germinated in distilled water, but no germination was recorded beyond 5 ppt NaCl, KCl and 8 dS m(-1) seawater. As compared to the control, 70-day-old seedlings grown in 16-48 dS m(-1) seawater concentrations showed lesser shoot length and fresh weight, but greater root length and dry weight. Large amounts of proline and phenyalanine and proline and glutamic acid were recorded for salt treated seedlings of A. lagopoides and S. madraspatanus, respectively. Accumulation of glucose and galactose in A. lagopoides and additionally that of arabinose and rhamnose in S. madraspatanus was greater in seedlings raised in seawater concentrations. (c) 2004 Elsevier B.V. All rights reserved.