title: [Dynamic studies on photosynthetic and growth characteristics of Angecila dahurcia].
abstract: Photosynthetic and growth characteristics of Angelica dahurica were studied in order to clarity the relations of photosynthesis, growth and root dry weight, and provide a theoretical basis for its cultivation. Photosynthesis and growth indexes were meas- ured every 25 days. The contents of chlorophyll a, b, a + b, soluble protein and the activities of Hill reaction, Ca(2+)-ATPase, Mg(2+)-ATPase had an increasing trend; They had the highest value in leaf high-speed growth period. Then, they were decreased in root high- speed growth period. The root dry weight showed negative corelation with photosynthetic characteristics indexes except stomatal con- ductance, however, the negative corelation only from net photosynthetic rate and Ca(2+)-ATPase were significant. The vegetative growth period of spring sowing A. dahuricia was divided into three phases: seedling period, leaf high-speed growth period and root high-speed growth period. The root dry weight showed a significantly positive corelation with the root diameter, leaf dry weight, shoot dry weight, aboveground dry weight. There was the competitive relation between aboveground and underground, so underground growth could be es- timated from leaf area and shoot dimeter.
authors.forename: Qing
authors.initials: Q
authors.lastname: Yang
authors.forename: Jing-Shi
authors.initials: JS
authors.lastname: Li
authors.forename: Yan-Fang
authors.initials: YF
authors.lastname: Liu
authors.forename: Jin-Ling
authors.initials: JL
authors.lastname: Han
authors.forename: Yan-Ling
authors.initials: YL
authors.lastname: Qi
authors.forename: Yan-Sheng
authors.initials: YS
authors.lastname: Li
authors.forename: Qian
authors.initials: Q
authors.lastname: Cui
authors.forename: Wen-Po
authors.initials: WP
authors.lastname: Wang
mesh_terms: D000251:Adenosine Triphosphatases / Q000378:metabolism; D029969:Angelica / Q000201:enzymology / Q000254:growth & development* / Q000378:metabolism*; D002734:Chlorophyll / Q000378:metabolism; D010788:Photosynthesis; D010940:Plant Proteins / Q000378:metabolism; D018517:Plant Roots / Q000254:growth & development; D012621:Seasons
chemical_list: D010940:Plant Proteins; D002734:Chlorophyll; D000251:Adenosine Triphosphatases