LED光质对油茶苗生长和光合特性的影响  

Effects of Light Qualities on Growth and Photosynthetic Characteristics of Camellia oleifera Cutting Stocks

作　　者：龚洪恩[1,2] 丁怡飞 姚小华[1] 王开良[1] 龙伟[1] GONG Hong-en;DING Yi-fei;YAO Xiao-hua;WANG Kai-liang;LONG Wei(Research Institute of Subtropical Forestry, Chinese Academy of Forest1T, ttangzhou 311400, Zhejiang, China;The Experimental Centre of Subtropical Forestry, Chinese Academy of Forestry, Fenyi 336600, Jiangxi, China)

机构地区：[1]中国林业科学研究院亚热带林业研究所,浙江杭州311400 [2]中国林业科学研究院亚热带林业实验中心,江西分宜336600

出　　处：《林业科学研究》2018年第2期176-182,共7页Forest Research

基　　金：浙江省农业(林业)新品种选育重大科技专项"木本粮油树种种质创制与新品种选育"课题(2016C02056-6);中国林业科学研究院院基金重点项目"油茶提质增效关键技术研究"(CAFYBB2017ZA004-1);中国林业科学研究院亚热带林业研究所基金项目"木本油料重要育种资源创新与评价利用"(RISFZ-2016-03)

摘　　要：[目的]探寻适合油茶苗培育的最佳LED光质配比。[方法]以2年生长林4号油茶扦插苗为试材,LED白光为对照,研究LED红光、蓝光及其复合光对油茶苗生长和光合特性的影响。[结果]表明:L1(红光)处理下,油茶苗高生长量最大,但表观量子效率、光补偿点和胞间CO2浓度最小;L7(蓝光)处理下,油茶苗光补偿点最高,但高生长量、干物质含量、壮苗指数、气孔导度和蒸腾速率最小;L6(10%红光+90%蓝光)处理下,油茶苗地径生长量、干物质含量、壮苗指数、光合色素含量、表观量子效率、最大净光合速率、暗呼吸速率、气孔导度、蒸腾速率、实际光能转换效率和相对电子传递速率均最大;L4(50%红光+50%蓝光)处理下,油茶苗地径生长量、光合色素含量、最大净光合速率、实际光化学效率和相对电子传递速率均最小,且非光化学淬灭系数最大。[结论]与对照及其它处理相比,L6(10%红光+90%蓝光)处理更利于长林4号油茶苗生长和光合能力的提高,是培育油茶壮苗较为理想的光质。[ Objective ] To find the best combination of LED light quality for Camellia oleifera cutting stock. [ Method ] Effects of red LED, blue LED and their composite light on the growth and photosynthetic characteristics of C. oleifera were studied taking two-years-old cutting stocks of Changlin-4 C. oleifera as test materials and white LED as control. [ Result] Under the irradiation of L1 （red light）, the height increment of C. oleifera stocks was the high- est, but the apparent quantum efficiency, light compensation point and intercellular COg concentration were the low- est. Treated with L7 （blue light）, the C. oleifera stocks had the highest light compensation point, and the lowest height increment, dry matter content, sound stock index, stomatal conductance and transpiration rate. The diameter increment, dry matter content, sound stock index, photosynthetic pigment content, apparent quantum efficiency, maximum net photosynthetic rate, respiration rate, stomatal conductance, transpiration rate, light energy conversion efficiency and relative electron transport rate of C. oleifera were the highest under the irradiation of L6 （ 10% red lights ＋ 90% blue lights）. While the diameter increment, photosynthetic pigment content, maximum net photosyn- thetic rate, light energy conversion efficiency and relative electron transfer rate of which all were the lowest with the treatment of L4 （50% red lights ＋ 50% blue lights）, furthermore, the non photochemical the highest. [Conclusion] Compared with the control and other treatments, L6 （10% lights） is the ideal light quality to cultivate sound cutting stocks of C. oleifera, which growth and photosynthetic capacity of Changlin-4 C. oleifera stocks. quenching coefficient was red lights ＋ 90% blue is more conducive to the

关 键 词：LED 光质 油茶 生长 光合特性 

分 类 号：S794.4[农业科学—林木遗传育种]