文献类型：期刊文献

英文题名：Growth and physiological responses to NaHCO 3 stress and comprehensive evaluation on saline-alkaline tolerance in Leuce clones at seedling stage

作者：Yang C.-B.[1] Ni H.-J.[2] Li S.-W.[3] Yao J.-X.[3] Zheng Z.-M.[4] Tian S.-Y.[5] Jiao X.-J.[6]

第一作者：Yang C.-B.

通信作者：Li, S.-W.[3]

机构：[1]China National Bamboo Research Center, Chinese Academy of Forestry, Hangzhou, 310012, China;[2]Forestry College, Shangdong Agricultural University, Taian, Shangdong 271018, China;[3]Shandong Academy of Forestry, Key Laboratory for Genetic Improvement in Forest Trees of Shandong Province, Ji'nan, 250014, China;[4]Shenxian County State-owned Maxi Tree Farm of Shandong, Shenxian, Shangdong 252400, China;[5]Guanxian County State-Owned Nursery of Shandong, Guanxian, Shangdong 252500, China;[6]Shandong Muping Forestry Bureau, Muping, Shangdong 264100, China

年份：2016

卷号：52

期号：10

起止页码：1555-1564

外文期刊名：Zhiwu Shengli Xuebao/Plant Physiology Journal

收录：Scopus(收录号：2-s2.0-85013040801)

语种：英文

外文关键词：Growth; Leuce; NaHCO3 stress; Physiological index

摘要：In order to explore the responses of white poplar clones to NaHCO3 stress and select superior clones with characteristics of fast-growth and strong saline-alkaline resistance, the growth and physiological characteristics of eight white poplar clones grown in pots under 0, 30, 60 and 90 mmol·L-1 NaHCO3 stresses were investigated. The results showed that the growth of above-ground and root were inhibited apparently under NaHCO3 stress. The two clones 26 and 89 showed the fast-growth. The chlorophyll content decreased obviously in all clones, and the chlorophyll content of clone 26 and 89 showed the smallest decline under NaHCO3 stress. The content of the proline in eight clones showed the trend of increasing gradually with the increase of NaHCO3 concentration, and that of clone 26 and 89 was significantly higher than the other clones. The cell membrane permeability and MDA content had a steady increase with the increase of NaHCO3 concentration, and that of clone 26, LM50 and 89 was significantly lower than others under the same stress. SOD activity firstly increased and then decreased, and that of clone 26 and 89 was always higher than the other clones. Under 90 mmol·L-1 NaHCO3 stress, the height increment and the basal diameter increment had a significantly correlation with all the physiological indexes. It indicated that using the growth and physiological indexes to evaluate the salt-resistance of eight clones could therefore reflect the response of NaHCO3 stress. Through principal component analysis, the sequence of salt resistance in eight clones was as follows: 26>89>LM50>150>Z3>27>1316>Y3. Therefore, it was preliminarily considered that clone 26 and 89 had significant saline-alkaline resistance and fast-growing, which could be used as the important testing materials for afforestation in saline area and breeding resource in resistance research. ? 2016, Science Press. All right reserved.