| 低温胁迫下羊蹄甲和洋紫荆家系叶片相对电导率的变化 |
| |
| 作者姓名： | 王洋 魏丹 张梅兰 冯志坚 陈友光 张耕 |
| |
| 作者单位： | 广东省森林培育与保护利用重点实验室/广东省林业科学研究院;南雄市林业科学研究所;华南农业大学;广东如春生态集团有限公司 |
| |
| 基金项目： | 广州市科技计划项目(201904010397)。 |
| |
| 摘 要： | 羊蹄甲Bauhinia purpurea和洋紫荆Bauhinia variegata是羊蹄甲属常见的景观树种,为研究其不同家系的抗寒能力,利用电导法分别对半年生实生苗进行人工低温胁迫试验。结果表明:随着低温胁迫的加重,各家系的叶片相对电导率整体呈上升趋势,且不同家系叶片的相对电导率增长速率不同,表明低温胁迫下各家系叶片的质膜受损程度不同。结合其形态特征变化和后期恢复速度,发现羊蹄甲Y15、洋紫荆G48、G26、G34家系的叶片相对电导率上升幅度较小,低温胁迫后恢复生长情况良好,表明其抗寒性较强。
|
| 关 键 词： | 羊蹄甲 洋紫荆 家系 低温胁迫 相对电导率 |
Changes of Relative Conductance in Strains of Bauhinia purpurea and Bauhinia variegata under Cold Stress |
| |
| Authors: | WANG Yang WEI Dan ZHANG Meilan FENG Zhijian CHEN Youguang ZHANG Geng |
| |
| Institution: | (Guangdong Provincial Key Laboratory of Silviculture,Protection and Utilization/Guangdong Academy of Forestry,Guangzhou,Guangdong 510520,China;Nanxiong Academy of Forestry,Nanxiong,Guangdong 512400,China;South China Agricultural University,Guangzhou,Guangdong 510520,China;Guangdong Ruchun Ecological Group Co,Ltd,Guangzhou,Guangdong 510520,China) |
| |
| Abstract: | Bauhinia purpurea and B.variegata are common landscape tree species of Bauhinia.In order to study the cold resistance ability of different strains,artificial low temperature stress test was carried out by conductivity method on half year old seedlings respectively,and field test was carried out to screen strains with strong resistance.The results showed that with the increase of low temperature stress,the relative conductance of leaves of different strains showed an overall increasing trend and was different from each other,indicating that the damage degree of plasma membrane of leaves of each strain was different under low temperature stress.Combined with its morphological characteristics change,the relative conductance of leaves of B.purpurea Y15,B.variegata G48,G26 and G34 increased slightly,and the growth of leaves recovered well after low temperature stress,suggesting that they had better resistance to cold. |
| |
| Keywords: | Bauhinia purpurea Bauhinia variegate family cold resistance relative conductance |
| 本文献已被 CNKI 维普 等数据库收录！ |
|
