He-Ne Laser-Induced Improvement in Biochemical, Physiological, Growth and Yield Characteristics in Sunflower (Helianthus annuus L.)
He-Ne Laser-Induced Improvement in Biochemical, Physiological, Growth and Yield Characteristics in Sunflower (Helianthus annuus L.)
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DOI：
10.1111/j.1751-1097.2011.00974.x
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发表时间：
2011-11-01
影响因子：
3.3
通讯作者：
Ahmad, Muhammad Raza
中科院分区：
文献类型：
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作者：
Perveen, Rashida;Jamil, Yasir;Ahmad, Muhammad Raza
用能量为0、100、300和500mJ的低功率连续波He-Ne激光照射向日葵种子，研究其对向日葵的各项生化、生理、生长和产量参数的影响。试验采用完全随机设计(CRD)，由4个重复组成，在温室条件下进行。种子经He-Ne处理后，其光合速率(A)、蒸腾速率(E)、内源CO_2浓度(C-I)、气孔导度(g(S))、叶绿素a和b含量、相对膜透性和叶片水势(psi(W))、渗透压(psi(S))和膨胀势(psi(P))、相对含水量和叶面积均显著高于对照。超氧化物歧化酶、过氧化物酶和过氧化氢酶的活性以及总可溶性蛋白、丙二醛、脯氨酸和叶片总酚的含量也随着激光处理的增加而增加。向日葵的地上部鲜干质量、根鲜干重、根长、地上部长度、单株叶数和茎粗等生长参数也显著增加。激光处理还增加了地上部和根部K、Ca、Mg的含量，总体上增加了28.12%。
The water-soaked seeds of sunflower were exposed to low power continuous wave He-Ne laser irradiation of energies 0, 100, 300 and 500 mJ to evaluate the effect on various biochemical, physiological, growth and yield parameters of sunflower. The experiments which consisted of four replicates arranged in a completely randomized design (CRD) were carried out under the greenhouse conditions. The physiological attributes like, photosynthetic rate (A), transpiration rate (E), intrinsic CO2 concentration (C-i), stomatal conductance (g(s)), chlorophyll a and b contents, relative membrane permeability and leaf water (psi(w)), osmotic (psi(s)) and turgor (psi(p)) potentials, relative water contents and leaf area increased significantly as compared to control due to He-Ne treatment of seeds. The activities of superoxide dismutase, peroxidase and catalases and contents of total soluble proteins, malondialdehyde, proline and leaf total phenolic also increased due to laser treatment. Significant increase in growth parameters of sunflower like shoot fresh and dry masses, root fresh and dry masses, root and shoot lengths, number of leaves per plant and stem diameter has also been observed. The contents of K, Ca and Mg in shoot and root were also increased and an overall increase of up to 28.12% was observed due to laser treatment.