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Study on Sa lt-tolerance Ability in Rooted Cuttings of D ifferent Ca suar ina Clones

  • Based on the characteristic that branchlets of Casuarina is capable of forming roots bywater culture, rooted cuttings of 9 Casuarina cloneswere immersed by various concentration of salt solutions for stress treatments, then6 physiological or biochemical variables related to salt stresswere measured, and salt2tolerance ability among different Casuarina cloneswere compared. The results showed that: The critical salt concentration that p revent rooted cuttings from rooting very significantly was 5—10 g·kg- 1. 3 variables, namely Fp ro, EC and POD activity were determined asmain app raising indexes that evaluating salt-tolerace ability of Casua rina clones by p rincipal componentanalysis. And 3 superior salt-tolerance Casua rina cloneswere selected by means of compositive evaluation.
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    Midgley S J, Turnbull, Johnston R D. Casuarina Ecology,Managementand Utilization[M]. CSIRO, Canberra, 1983
    [2] 仲崇禄,弓明钦,林什全,等. 接种菌根菌的木麻黄种源/家系苗的变异研究[J]. 林业科学研究, 2003, 16 (5) : 588 - 594

    [3] 康丽华. 人工接种弗兰克氏菌的木麻黄幼林施肥效应研究[J].林业科学研究, 2000, 13 (3) : 274 - 279

    [4] 陈洪,叶功富,林金顺,等. 模拟海风对木麻黄苗木生理生化特性影响的研究[J]. 防护林科技, 2000 (专刊) : 190 - 193

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    [6] 张志良,瞿伟菁. 植物生理学实验指导第三版[M]. 北京:高等教育出版社, 2002

    [7] 黄少伟,谢维辉. 实用SAS编程与林业试验数据分析[M]. 广州:华南理工大学出版社, 2001

    [8] 王春珍,李荫藩. 模糊隶属法在莜麦抗旱性鉴定中的应用[J]. 干旱地区农业研究, 1996, 14 (2) : 78 - 80

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    Rodriguez H G, Roberts J KM, Jordan W R, et al. Growth waterrelations and accumulation of organic and inorganic solutes in roots ofmaize seedlings during salt stress[J]. Plant physiol, 1997, 113: 881- 893
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    [11] 沈银柱,刘植义,张召铎,等. 诱发小麦成熟胚愈伤组织及其再生植株抗盐性变异的研究[J]. 遗传学报, 1993, 20 ( 3 ) : 253- 261

    [12] 龚 明. 盐胁迫下大麦和小麦等叶片脂质氧化伤害与超微结构变化的关系[J]. 植物学报, 1989, 31 (11) : 841 - 846

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Study on Sa lt-tolerance Ability in Rooted Cuttings of D ifferent Ca suar ina Clones

  • 1. Research Institute of Trop ical Forestry, CAF, Guangzhou 510520, Guangdong, China

Abstract: Based on the characteristic that branchlets of Casuarina is capable of forming roots bywater culture, rooted cuttings of 9 Casuarina cloneswere immersed by various concentration of salt solutions for stress treatments, then6 physiological or biochemical variables related to salt stresswere measured, and salt2tolerance ability among different Casuarina cloneswere compared. The results showed that: The critical salt concentration that p revent rooted cuttings from rooting very significantly was 5—10 g·kg- 1. 3 variables, namely Fp ro, EC and POD activity were determined asmain app raising indexes that evaluating salt-tolerace ability of Casua rina clones by p rincipal componentanalysis. And 3 superior salt-tolerance Casua rina cloneswere selected by means of compositive evaluation.

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