单 位：
中国热带农业科学院热带作物生物技术国家重点实验室;海南大学理工学院;海南大学园艺园林学院
摘 要：
通过对许树叶主要矿质元素的积累、叶片形态结构和叶绿素含量的研究发现:①许树叶片气孔频度由淡水培育时的163.5个.mm-2减少至盐水培育的115.7个.mm-2,其减少幅度约30%,以此减少水分的蒸腾而适应其盐境;同时也减少了一些依靠蒸腾力而被动吸收的无机盐在叶中的积累,如Ca2+减少了约61.3%。②许树叶子积累较高的Na、Cl,在盐水条件下叶子积累的Na与Cl分别为3.74%和1.277%,是淡水条件下叶子积累的Na、Cl的19.7倍、1.2倍。③淡水培育的许树叶含有较高的叶绿素,其Ca、Cb与Ca+b分别为10.213 mg.g-1干重、3.474 mg.g-1干重和13.684 mg.g-1干重,与淡土植物大青叶的叶绿素含量相当;盐水条件下,许树成熟叶片的叶绿素含量明显减少,其Ca、Cb与Ca+b比淡水条件下许树叶片的分别减少了53.75%、44.35%和51.37%;但为了适应强光照的阳生生境,Ca/Cb仍为2.44,表现出其对环境的适应。
译 名：
Preliminary study on salt-tolerant biological property of coastal plant Clerodendrum inerme
作 者：
SHAN Jia-lin1,3,YU lin2,ZHENG Xue-qin3(1.College of Horticulture and Landscape Architecture,Hainan University,Danzhou,Hainan 571737,China;2.College of Science and Technology,Hainan University,Danzhou,Hainan 571737,China;3.National Key Biotechnology Laboratory for Tropical Crops,Chinese Academy of Tropical Agriculture, Haikou,Hainan 571101,China)
关键词：
Clerodendrum inerme;coastal plant;salt-tolerant property;biology
摘 要：
Based on the study of the mineral element cumulation,morphological structure and chlorophyll content of Clerodendrum inerme leaves,the results showed as follows:① Compared with its higher stomatal frequency(163.5·mm-2) under fresh water condition,coastal plant C.inerme with 115.7·mm-2 of stomatal frequency under saline condition decreased by 30% of the stomatal frequency in adaptation to its habitat.Some minerals passively absorbed to decrease accumulation in the leaves,such as mineral Ca2+,it decreased by 61.3% of content in the leaves of C.inerme under saline condition.②Accumulation of elements such as Na,Cl,Ca,etc.in the leaves of C.inerme growing in saline soil were 3.74%(% of dried weight),1.277%,1.01%,respectively,but that in the leaves of C.inerme growing under fresh water condition are 0.19%,1.007%,2.61%,respectively.③C. inerme had higher chlorophyll contents under fresh condition,which chlorophyll Ca,chlorophyll Cb and chlorophyll Ca+b are 10.213 mg·g1(dried weight),3.474 mg·g-1 and 13.684 mg·g-1,respectively.In adaptation to saline condition,C.inerme lost 53.75% of chlorophyll 'a',44.35% of chlorophyll 'b' and 51.37% of chlorophyll 'a+b',compared with that survived under fresh water condition.The ratio of Ca to Cb kept 2.44 for adaptation to its sunny habitat.
