13种优良绿化攀缘植物对干旱胁迫的生理响应

为弥补国内在园林绿化攀援植物抗旱能力方面的研究空白，为园林绿化实践提供优良抗旱攀援植物品种，试验以叶片保水力、可溶性糖含量和游离脯氨酸含量等生理生态学指标，对项目组从资源圃中27科共54种攀援植物中筛选出的13种综合性状优良的攀援植物品种，在干旱胁迫下的生理响应进行了研究。研究结果表明，不同供试攀援植物品种在干旱胁迫下表现出来的反应差异比较明显，其中耐旱性最强和耐旱性最弱的材料在许多指标上的差异达到了1倍左右甚至更大，而且具有一定的规律。对13个供试攀援植物品种在抗旱性方面的综合表现进行了模糊评价，初步确定鸡蛋果、红萼龙吐珠、美丽赪桐、金银花、麻雀花、星果藤和清明花等7个品种为比较抗旱的品种，同时也具有较为优良的景观性状，可供将来生产实践中推广应用。

Physiological Response to Drought Stress of 13 Excellent Greening Climbing Plants

In order to make up the gaps of study in the drought resistance of greening climbing plants and provide climbing plants with excellent drought resistance for landscape greening,physiological response to drought stress of 13 excellent greening climbing plants,which were sieved from 54 species of 27 families in the resource repository,was studied in the test,using the indexes of leaf water retention,soluble sugar content and free proline content.The results showed that the difference of physiological response to drought stress among the 13 plants was significant,of which many indicators between the plant with the best drought resistance and the worst one had difference more than one times.After evaluating the comprehensive performance of 13 test plants using fuzzy function,Passiflora edulia Sims,Clerodendrum speciosum,Clerodendrum splendens,Lonicera japonica Thunb.,Aristolochia ringens,Tristellateia australasiae A.and Beaumontia grandiflora Wall.were considered to have relatively better drought resistance while also had excellent landscape characters,which were worth to spread in the future.