Exploration on the improvement of lower light intensity and red light in wheat breeding
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摘要：
高光效育种是提高小麦单产的重要途径,弱光和红光利用是小麦光能利用改良的核心内容之一.研究基于新乡地区的光照条件,分析了百农矮抗58、百农4199、百农160、周麦22等不同小麦品种越冬期和灌浆期的光照强度,检测了苗期的叶色,并在灌浆初期和中期利用红光及蓝光照射叶色不同的品种,检测了光合效率,分析了不同品种的叶绿素a与叶绿素b的比值.结果表明小麦越冬期光照强度显著低于灌浆期,可见光7种光质中,红光比例最高且上午(7:00-9:00)和下午(17:00-19:00)比例增加.苗期百农160和百农4199叶色最深,宝丰7228颜色最浅,差异极显著.红光处理的小麦旗叶光合效率高于蓝光,百农4199的光合效率均显著高于矮早781和宝丰7228,但叶绿素a与叶绿素b的比值显著低于矮早781和宝丰7228,蓝光下不同品种旗叶光合效率和叶绿素a与叶绿素b的比值差异不显著.
Improving photosynthetic efficiency is an important way to increase wheat yield.Enhancing utilization of lower light and red light contributes to raise photosynthetic efficiency.Based on to the light conditions of Xinxiang,the light intensity at different development stage and the seedling leaf color of wheat varieties were investigated.Further,under the red light and blue light,the photosynthetic efficiency of different cultivars was detected.The results showed that the proportion of red light was the highest in visible lights,increasing from AM 7:00-9:00 and PM 17:00-19:00.The light intensity of overwintering stage was significantly lower than that of grain filling stage.At seedling stage,the leaf colors of Bainong 160 and Bainong 4199 were significantly darker than that of Bainong AK58.The photosynthetic efficiency of flag leaf under red light was higher than that of blue light,and the photosynthetic efficiency of Bainong 4199 was significantly higher than that of Aizao 781 and Baofeng 7228,however,The ratio of chlorophyll a to chlorophyll b was significantly lower than that of Aizao 781 and Baofeng 7228.Under blue light,no significant difference was detected between the photosynthetic efficiency and the ratio of chlorophyll a to chlorophyll b of flag leaf in different varieties.
作者：
王玉泉 杨紫君 赵丽敏 冯素伟 丁位华 金立桥 李淦 王昱洁 茹振钢
Wang Yuquan;Yang zijun;Zhao Limin;Feng Suwei;Ding Weihua;Jin Liqiao;Gan Li;Wang Yujie;Ru Zhengang(Henan Key Laboratory of Hybrid Wheat,School of Science and Technology,Henan Institute of Science and Technology,Xinxiang 453003,China;Shenqiu Agriculture Bureau,Shenqiu 466300,China)
机构地区：
河南科技学院河南省杂交小麦重点实验室 沈丘县农业农村局
出处：
《betway官方app 学报：自然科学版》 CAS 北大核心 2022年第6期15-21,F0002,共8页
Journal of Henan Normal University(Natural Science Edition)
基金：
国家重大科技专项(2020ZX08009-08B) 河南省科技攻关项目(212102110053).
关键词：
光照强度 高光效 弱光 光质 叶绿素
intensity of light high photosynthetic efficiency lower light intensity light quality chlorophyll
分类号：
Q945.1 [生物学—植物学]
