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当前位置: 首页 > 文章 > 连续3年UV-B辐射对33个割手密无性系成熟期锤度的影响 农业环境科学学报 2007,26 (03) 1014-1018
Position: Home > Articles > Effects of Three Years' Enhanced UV-B Radiation on Birxs of 33 Wild Sugarcane(Saccharum spontaneum L.) Clones at Ripening Stage Journal of Agro-Environment Science 2007,26 (03) 1014-1018

连续3年UV-B辐射对33个割手密无性系成熟期锤度的影响

作  者：
李元;祖艳群;秦丽;何永美;张翠萍;何丽莲
单  位：
云南农业大学资源与环境学院;云南农业大学农学与生物技术学院
关键词：
UV-B辐射;割手密;锤度;响应差异
摘  要：
在大田栽培和自然光条件下,研究了连续3年模拟紫外辐射(UV-B,280～315nm)增加对33个割手密无性系成熟期锤度的影响。结果表明:(1)UV-B辐射对割手密无性系锤度具有明显的影响;(2)33个割手密无性系锤度对UV-B辐射响应具有明显的差异,在2003年、2004年和2005年,锤度响应范围分别为-27.86%～69.90%、-28.88%～34.58%和-18.90%～26.21%;(3)割手密无性系锤度对UV-B辐射响应具有明显的年际间差异,从选择的10个无性系来看,从2003年、2004年到2005年,6个无性系锤度变化率增加,4个无性系锤度变化率下降。
译  名：
Effects of Three Years' Enhanced UV-B Radiation on Birxs of 33 Wild Sugarcane(Saccharum spontaneum L.) Clones at Ripening Stage
作  者：
LI Yuan1,ZU Yan-qun1,QIN Li1,HE Yong-mei1,ZHANG Cui-ping1,HE Li-lian2(1.College of Resources and Environment,Yunnan Agricultural University,Kunming 650201,China;2.College of Agronomy and Biotechnology,Yunnan Agricultural University,Kunming 650201,China)
关键词：
UV-B radiation;wild sugarcane(Saccharum spontaneum L.);birxs;response difference
摘  要：
Field studies were conducted for three consecutive years to determine the potential effect of enhanced ultraviolet-B(UV-B,280～315 nm) radiation on birxs(the total solvable material contents in cell) and the intraspecific variation of birxs of 33 wild sugarcane(Saccharum spontaneum L.) clones at ripening stage.Wild sugarcane clones were collected from original sites in China.The supplemental UV-B radiation was 5.00 kJ·m-2,simulating a depletion of 20% stratospheric ozone at Kunming(25 °N,1950 m).Out of 33 wild sugarcane clones tested,in general,ultraviolet-B radiation had significant effects on brixs,while intraspecific differences in brixs of wild sugarcane clones under UV-B radiation were observed in 2003,2004 and 2005,respectively.The responses of birxs to UV-B radiation varied with different years,being-27.86%～69.90%,-28.88%～34.58% and-18.90%～26.21% in 2003,2004 and 2005,respectively.Considering 10 wild sugarcane clones that were chosen from 33 tested clones in 2003,2004 and 2005,respectively,the birxs of 6 of them increased,and that of 4 of them decreased under UV-B radiation.Brixes were related with sensitivity of wild sugarcane clones to UV-B radiation.UV-B radiation decreased brixs in tolerant wild sugarcane clones that originated from regions with high UV-B ambient(high elevation),but increased that in sensitivity ones that originated from regions with low UV-B ambient(high elevation).

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