期刊论文

Effects of enhanced ultraviolet-B radiation on growth development and yield formation in rice (Oryza sativa L.)

中文

应用生态学报

Chinese Journal of Applied Ecology

1001-9332

2002

13

10

1278-1282

国家自然科学基金项目 (3 9970 44 1)； 教育部优秀年轻教师基金(2 0 0 0 11)； 福建省自然科学基金资助项目 (2 0 0 2 ) .；

本校为其他机构

在盆栽条件下,研究UV-B辐射(280～320nm)增强对3个不同类型水稻品种(组合)的生长发育及其产量构成的影响.结果表明,UV-B 辐射增强明显抑制水稻生长,使株高变矮、分蘖数减少、叶面积和干物质量下降,但其抑制程度依品种、水稻所处的生长阶段的不同而不同.株高在苗期下降幅度最大,为9.4%～12.2%;干物质量在分蘖期下降幅度最大,地下部和地上部干物质量分别下降45.3%～59.8%、54.9%～59.0%.增强的UV-B 辐射使水稻主茎不同叶位的出叶时间延迟,生育期延长.汕优63、南川、IR65600-85的抽穗时间分别比对照延迟2d、3d和7d,成熟期分别推迟3d、4d和9d.UV-B辐射增强明显降低水稻叶片的叶绿素和类胡萝卜素含量...

Effect of enhanced ultraviolet-B radiation (280-320 nm) on growth, development and yield formation in the three rice cultivars (Oryza sativa L.) under pot conditions were investigated. The results showed that enhanced ultraviolet-B radiation decreased rice height, tiller number, total leaf area and biomass, but the inhibitory rate varied in different cultivars and developmental stages. Plant height was decreased by 9.4%-12.2% in seedling stage, plant shoot and root of dry matter were decreased by 45.3%-59.8% and 54.9%-59.0% respectively in tillering period. The leaf emergence delayed, resultin...