CAJ | 학술논문

以海南本地高种与文椰2号矮种2个有代表性的椰子品种幼苗为试材,在温室大棚条件下,采用盆栽土培法,研究不同浓度海水对2种椰子幼苗叶片相对含水量、丙二醛、可溶性糖、脯氨酸、K＋、Na＋含量及K＋/Na＋值等生理特性的影响。结果表明：低浓度海水灌溉（30%）,2种椰子幼苗长势良好,叶片相对含水量、可溶性糖、脯氨酸、K＋、Na＋含量及K＋/Na＋值等生理特性与对照相比无明显差异。随着海水浓度的升高,2种椰子幼苗各项指标与对照组的差异逐渐明显。高浓度海水灌溉（90%）时,海南本地高种与文椰2号叶片相对含水量及K＋/Na＋值均显著降低,脯氨酸、可溶性糖、Na＋含量显著升高;海南本地高种较文椰2号Na＋含量变化幅度大,K＋/Na＋值下降更剧烈,而文椰2号矮种叶片相对含水量下降趋势更为明显、可溶性糖含量变化幅度更大,脯氨酸变化趋势相近。2种椰子幼苗中丙二醛含量变化均较为复杂,呈现先升高后降低再升高的趋势。
이해남본지고충여문야2호왜충2개유대표성적야자품충유묘위시재,재온실대붕조건하,채용분재토배법,연구불동농도해수대2충야자유묘협편상대함수량、병이철、가용성당、포안산、K＋、Na＋함량급K＋/Na＋치등생리특성적영향。결과표명：저농도해수관개（30%）,2충야자유묘장세량호,협편상대함수량、가용성당、포안산、K＋、Na＋함량급K＋/Na＋치등생리특성여대조상비무명현차이。수착해수농도적승고,2충야자유묘각항지표여대조조적차이축점명현。고농도해수관개（90%）시,해남본지고충여문야2호협편상대함수량급K＋/Na＋치균현저강저,포안산、가용성당、Na＋함량현저승고;해남본지고충교문야2호Na＋함량변화폭도대,K＋/Na＋치하강경극렬,이문야2호왜충협편상대함수량하강추세경위명현、가용성당함량변화폭도경대,포안산변화추세상근。2충야자유묘중병이철함량변화균교위복잡,정현선승고후강저재승고적추세。
A pot experiment was carried out with two coconut cultivars（Hainan Tall,Wenye 2 Dwarf） seedlings irrigated with different dilutions of seawater for 60 days in order to investigate the effects of salinity stress on several physiological parameters,such as leaf relative water content（LRWC）,leaf proline,malondialdehyde（MDA）,soluble sugars（SS）,K＋,Na＋ contents and K＋/Na＋ ratio.Results revealed that both the two coconut seedlings grew well,irrigated by low concentration seawater（30%）.All physiological parameters expect MDA had no obvious significance compared with control groups.However,the indexes became more obvious along with the seawater concentration increased.The high salinity stress affected negatively both the cultivars.LRWC,K＋/Na＋ ratio decreased obviously,Proline,SS and Na＋ content increased apparently in both cultivars.Hainan Tall had more increase in Na＋ content and decrease in K＋/Na＋ ratio.Whereas there were more reduction of RLWC and more addition of SS in Wenye 2 declined more dramatically,SS increased more quickly compared with Hainan Tall.Changes of Proline had similar trend.The variation of MDA was complex in both cultivars,which ascended firstly,then declined and ascended again.