Effects of NaCl Stress on Photosynthesis of Three Bamboos

采用盆栽试验法,对花叶唐竹(SInObAMbuSA TOOTSIk f.luTEOlO-AlbO-STrIATA)、小琴丝竹(bAMbuSA MulTIPlEX‘AlPHOnSE-kArr’)和刺黑竹(CHIMOnObAMbuSA nEOPurPurEA)进行不同浓度盐(nACl)胁迫(Ck、0.1%、0.3%、0.5%、0.7%、1.0%)处理,用美国lI-COr公司生产的lI-6400便携式光合作用分析系统测定其各项光合作用相关指标,分析研究其中重要的4项指标:净光合速率(Pn)、气孔导度(gS)、胞间二氧化碳浓度(CI)和蒸腾速率(E),以探究nACl胁迫对3种竹子叶片光合作用的影响。结果表明:低盐胁迫(0.1%nACl处理)提高了小琴丝竹和刺黑竹叶片净光合速率、气孔导度和蒸腾速率,而对花叶唐竹影响不大,但随着盐胁迫浓度的增加,3种竹类植物叶片的净光合速率、气孔导度和蒸腾速率呈逐渐下降的趋势;3种竹类植物胞间二氧化碳浓度随盐胁迫浓度的提高变化规律不明显。Four important indices of photosynthesis,including net photosynthetic rate(Pn),stomatal conductance(Gs),transpiration rate(E) and intercellular CO2(Ci) of the three bamboos of Sinobambusa tootsik f.luteolo-albostriata,Bambusa multiplex ‘Alphonse-karr’ and Chimonobambusa neopurpurea were studied by LI-6400 Portable Photosynthesis System and treatments by different concentrations of NaCl(CK-0.0%,S1-0.1%,S2-0.3%,S3-0.5%,S4-0.7% and S5-1.0%) in order to discuss the effects of NaCl stress on the photosynthesis of bamboos.The results showed that: low concentrations of NaCl stress(0.1%) promoted the Pn,Gs and E of Bambusa multiplex ‘Alphonse-karr’ and Chimonobambusa neopurpurea,but little effect on Sinobambusa tootsik f.luteolo-albo-striata;from 0.3% NaCl stress to 1.0% NaCl stress,with the increasing of salinity,Pn,Gs and E of all three bamboos were decreased;Ci of all three bamboos was not in good relationship with the increasing of salinity.厦门市科学技术局科研项目(No.3502Z20102003); 厦门市市政园林局科研项目(No.YK-2000-02

Study on the Nutrient Content of Bamboo Leaves and Soil in Coastal Region of Fujian

第一作者简介：陈松河，男， 1968年出生，福建长泰人，研究员，硕士生导师，硕士，主要从事园林植物（竹类）分类、栽培与抗逆性研究。通信地址： 361003厦门市思明区虎园路 25号， Tel：0592-2039619，E-mail：[email protected]。[中文文摘]为了研究福建滨海地区竹类叶片与土壤养分状况,对福建滨海3地厦门园博苑百竹园、莆田赤港华侨农场竹园和莆田湄洲岛竹类植物叶片和土壤养分进行实地调查取样分析。结果表明:3地17种竹类成熟叶片和衰老叶片氮(N)、磷(P)含量存在显著差异,且存在明显的地域性差异;竹类生长土壤氮(N)含量均值大小依次为厦门园博苑0.3697mg/g、莆田赤港0.2820mg/g、莆田湄洲岛0.1921mg/g;磷(P)含量均值大小依次为莆田湄洲岛0.3926mg/g、厦门园博苑0.3134mg/g、莆田赤港0.2152mg/g;莆田赤港和莆田湄洲岛10种竹类成熟叶片叶绿素a含量(Ca)和叶绿素b含量(Cb)均值比达到2.17,Ca和Cb间经11种单因子模型拟合,最优的拟合方程为:YA=0.9699+3.7374B-0.7166B2+0.0439B(3A代表Ca,B代表Cb),相关系数的平方达0.934,呈极显著相关关系;竹类植物盐害等级为0级的有5种,盐害等级为1级的有10种,盐害等级为2级的有2种,盐害等级为3级以上的未见。[英文文摘]In order to study nutrient status in bamboo leaves and soil,3 coastal region in Fujian, Xiamen Garden & Flower Expo (XMYB), Farm for Returned Overseas Chinese in Putian (PTCG) and Meizhou Island of Putian (PTMZ) were studied in this paper by field investigation and sampling analysis. The results were shown as follows: the content N and content P in mature and senescent of 17 species leaves in 3 coastal region were significant difference, also significant difference in region. The average value content N of bamboo soil inXMYB, PTCG, PTMZ were 0.3697, 0.2820, 0.1921 mg/g in turn. The average value content P of bamboo soil inPTMZ, XMYB, PTCG were 0.3926, 0.3134, 0.2152 mg/g in turn. The proportion of 10 mature bamboo speciesaverage value between content Ca and content Cb was 2.17, through 11 models of single factor analysis, the relation between the bamboo’s chlorophyll a content and chlorophyll b content accorded with model cubic: YA= 0.9699 + 3.7374B-0.7166B2 + 0.0439B3 (A stands for content Ca, B stands for content Cb), the square of itscorrelation coefficient was 0.934, it was very significant. Bamboo salt damage 0 degree had 5 species, 1 degreehad 10 species, 2 degree had 2 species, no species in 3-5 degree.厦门市科学技术局科研项目“竹类植物耐盐机理与筛选应用研究”(3502Z20102003);厦门市市政园林局科研项目“竹类植物在观赏园艺上的应用研究”(YK-2000-02

Studies on the Seed Ingredients and Characteristics of Bambusa multiplex cv. Alphonse-Karr

对小琴丝竹种子成分和特性进行了系统研究。结果表明:(1)小琴丝竹种子成分含量分别为可溶性蛋白40.694 Mg/g、可溶性糖14.670 MMOl/g、游离脯氨酸0.292 Mg/g、超氧化物歧化酶(SOd)164.522 u、过氧化物酶(POd)51.389 u/(g.MIn)、过氧化氢酶(CAT)19.947 Mg/g、丙二醛(MdA)0.064μMOl/g;(2)小琴丝竹的果实为颖果。带稃片种子细狭长圆形,长1.5~2.2 CM,直径2.0~3.0 MM,紫灰色;去稃片种子为细长椭圆形,长0.9~1.3 CM,直径1.6~2.8 MM,棕褐色;(3)小琴丝竹种子的净度为90.07%、千粒重46.000 g、含水量达16.7%;(4)种子发芽率试验表明:随着播种时间的推移或nACl溶液处理浓度的提高,种子发芽率急剧下降。厦门市科学技术局科研项目(编号:3502Z20102003);厦门市市政园林局科研项目“竹类植物在观赏园艺上的应用研究”(编号:YK-2000-02