摘要
对大田栽培条件下人工模拟的UV-B辐射滤减环境对晚稻品种“协优432”的叶绿素含量、株高、内源激素吲哚乙酸(IAA)、脱落酸(ABA)、赤霉素(GA3)、玉米素(Zeatin)含量的影响研究结果表明,在正常日光处理组与UV-A滤光组之间叶绿素a含量变化显著;正常日光处理组与UV-A滤光组、UV-A+UV-B滤光组之间株高无明显变化。UV-A+UV-B滤光组IAA、GA3、Zeatin含量分别比正常日光处理组降低了40.42%、48.60%、36.21%;分别比UV-A滤光处理组降低了36.52%、70.94%、54.54%。单因素方差分析及多重比较结果显示,UV-A+UV-B滤光组与正常日光处理组之间IAA、GA3含量差异显著;UV-A+UV-B滤光组与UV-A滤光处理组之间GA3、Zeatin含量差异显著。UV-A+UV-B滤光组ABA含量比正常日光处理组降低了29.74%,比UV-A滤光处理组降低了5.19%,经单因素方差分析后发现差异不显著。
The effects of artificially simulated UV-B radiation reduction under field conditions at Qianyanzhou region of Jiangxi Province on the growth and the contents of chlorophyll and endogenesis hormones, indoleacetic acid （ IAA）, abscisic acid （ABA） ,gibberellinA3 （GA3 ） and zeatin （Z）, of rice variety ＇ Xieyou 432＇ were studied. The results indicate that the UV-B radiation reduction induces the contents of chlorophyll change significantly, but no difference among the ambient control and treatments of UV-A and UV-A ＋ UV-B is observed. The contents of IAA, GA3 and Z with the UV-A ＋ UV-B treatment are significantly lower than those of ambient control, decreasing by 40.42 %, 48.60 %, 36.21%, respectively . Compared with the UV-A treatment the contents of IAA, GA3 and Z in the UV-A ＋ UV-B treatment are decreased by 36.52 %, 70.94 % and 54.54 %, respectively. The ABA content of UV-A ＋ UV-B treatment decreases by 29.74 % compared with that of the ambient control,and by 5.19 % compared with the UV-A treatment. The results also indicate that reduced UV-B radiation has changed the contents of the four endogenesis hormones of the investigated rice cultivar, and accordingly may have adverse effects on the process of growth and development of rice.
出处
《中国生态农业学报》
CAS
CSCD
2006年第3期122-125,共4页
Chinese Journal of Eco-Agriculture
基金
国家自然科学基金(30170152)
中国科学院地理科学与资源研究所知识创新工程领域前沿项目(CXIOG-C02-01)资助
关键词
水稻
大田条件
UV—B辐射滤减
生长
内源激素
Rice （ Oryza sativa L. ）, Field conditions, UV-B radiation reduction, Growth, Endogenesis hormone
