盐胁迫对毛叶山桐子生长的影响
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摘要
在塑料大棚内采用盆栽试验法,以毛叶山桐子(Idesia polycarpa var.vestita)1年生苗为对象,研究盐胁迫对其生长的影响。结果表明:毛叶山桐子在Na Cl<0.25%胁迫下,幼苗的形态特征、株高和地径变化趋势与对照一致,生长影响不大;在NaCl≥0.25%胁迫下,9 d后大部分幼苗叶片萎蔫凋落,18 d后大部分植株死亡。所以,毛叶山桐子耐盐临界浓度在0.1%左右。
The research objective of this article is focused on the one-year-old seedlings Idesia polycarpa var. vestita,to study on the effects of those growth with the stress of different NaCl concentration by pot experiment in the plastic greenhouses. The results showed that the seedlings morphological characteristics,height and ground diameter variation of I. polycarpa var. vestita were consistent with the control,and the growth was almost unaffected under the NaCl concerntration(< 0. 25%). The leaves of seedling was wilting litter under the NaCl concerntration(≥ 0. 25%) after 9 days. Most of the seedlings were death after 18 days. So,salt tolerance of I. polycarpa var. vestita is in the 0. 1% or so.
The research objective of this article is focused on the one-year-old seedlings Idesia polycarpa var. vestita,to study on the effects of those growth with the stress of different NaCl concentration by pot experiment in the plastic greenhouses. The results showed that the seedlings morphological characteristics,height and ground diameter variation of I. polycarpa var. vestita were consistent with the control,and the growth was almost unaffected under the NaCl concerntration(< 0. 25%). The leaves of seedling was wilting litter under the NaCl concerntration(≥ 0. 25%) after 9 days. Most of the seedlings were death after 18 days. So,salt tolerance of I. polycarpa var. vestita is in the 0. 1% or so.
引文
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[2]黄广远.盐胁迫对臭椿生长与生理的影响[D].南京:南京林业大学,2012.
[3]杨少辉,季静,王罡.盐胁迫对植物的影响及植物的抗盐机理[J].世界科技研究与发展,2006,28(4):70-76.
[4]伍江波.施肥和盐胁迫对杜仲幼苗生长及生理影响研究[D].长沙:中南林业科技大学风景园林学院,2015.
[5]陈万超.三个杨树品种耐盐性和耐盐机制的比较研究[D].长春:东北师范大学,2007.
[6]刘志高,申亚梅,邵伟丽.盐胁迫对红叶石楠“红罗宾”幼苗生长与光合生理的影响[R].浙江:浙江农林大学园林学院,2012,32(3):238-242.
[7]古粹芝.中国植物志:第52卷第1分册[M].北京:科学出版社,1999.
[8]杨升,刘正祥,张华新,等.3个树种苗期耐盐性综合评价及指标筛选[J].林业科学,2013,49(1):91-98.