title: [Effects of calcium on biological characteristics of wheat seedlings under ultraviolet-B radiation stress].
abstract: Under simulated ultraviolet-B radiation (UV-B, 280-320 nm), effect of calcium on biological characteristics of wheat seedlings was studied with pot culture experiment. The results showed that the growth indexes of wheat seedlings on ground and underground in calcium concentration 2 mmol/L treated group were obviously reduced than that of wheat seedlings in control treated group (the descending range of 8.1%-36.1%) under UV-B stress (0.35 W/m2, 6 h per day, for 7 day). And the decreasing degree of growth indexes (3.2%-28.6%) for wheat seedlings in calcium concentration 6 mmol/L treated group were lower than in calcium concentration 2 mmol/L treated group. The experiment proved that calcium can mitigate the damage of ultraviolet-B radiation on wheat seedlings, and this effect was related to that calcium affected physiological and biochemical characteristics of wheat seedlings.
authors.affiliation: School of Biotechnology, Southern Yangtze University, Wuxi 214063.
authors.forename: Q
authors.initials: Q
authors.lastname: Zhou
authors.forename: X
authors.initials: X
authors.lastname: Huang
authors.forename: G
authors.initials: G
authors.lastname: Shi
authors.forename: Y
authors.initials: Y
authors.lastname: Dai
mesh_terms: D002118:Calcium / Q000494:pharmacology*; D002122:Calcium Chloride / Q000494:pharmacology; D002734:Chlorophyll / Q000528:radiation effects; D050901:Nitrate Reductase; D009565:Nitrate Reductases / Q000378:metabolism; D018517:Plant Roots / Q000187:drug effects / Q000502:physiology / Q000528:radiation effects; D011392:Proline / Q000378:metabolism; D012639:Seeds / Q000187:drug effects / Q000254:growth & development / Q000378:metabolism / Q000528:radiation effects; D014908:Triticum / Q000187:drug effects* / Q000254:growth & development / Q000378:metabolism / Q000528:radiation effects*; D014466:Ultraviolet Rays
chemical_list: D002734:Chlorophyll; D011392:Proline; D009565:Nitrate Reductases; D050901:Nitrate Reductase; D002122:Calcium Chloride; D002118:Calcium