烟草科技Issue(1)：14-21,53,9.DOI:10.16135/j.issn1002-0861.20160103
人工遮光对不同烤烟品种（系）生长发育和光合特性的影响
Effects of artificial shading on growth, development and photosynthetic characteristics of different varieties of flue-cured tobacco
摘要
Abstract
In order to investigate the effects of light stress on the early flowering of flue-cured tobacco, the effects of artificial shading on the growth, development and photosynthetic characteristics of flue-cured tobacco cv. K326 and anti-early flowering flue-cured tobacco line HY06 were studied via field experiments. The results showed that after growing under 44% of natural light intensity for 30 days, 1) the growth of flue-cured tobacco was significantly influenced by shading. The plant height and stalk circumference of the two varieties decreased significantly, although the plant height of HY06 was taller; 2) the flower budding of the flue-cured tobacco was significantly affected by the shading treatment. The number of effective leaves at the budding stage of the two varieties were reduced remarkably, with HY06 displayed more than the other variety; the flower budding stage was also delayed; 3) shading significantly decreased the net photosynthetic rate, stomatal conductance and photosynthetic oxygen evolution rate of the tobacco leaves and significantly increased intercellular CO2 concentration. The contents of chlorophyll and carotenoid, net photosynthetic rate and chlorophyll b synthesizing capability of HY06 were higher than those of K326. These results indicate that new anti-early flowering line HY06 possesses a better adaptability for weak light.关键词
烤烟/遮光/品种(系)/生长发育/光合特性Key words
Flue-cured tobacco/Shading/Variety (line)/Growth and development/Photosynthetic characteristic分类
农业科技引用本文复制引用
刘柏林,李俊业,陈建军,宋丹妮,李淮源..人工遮光对不同烤烟品种（系）生长发育和光合特性的影响[J].烟草科技,2016,(1):14-21,53,9.基金项目
国家烟草专卖局重点科技项目“耐低温抗早花烤烟新品种选育及遗传生理机理研究”（中烟办［2010］2号，110200902043）；广东省烟草专卖局（公司）科技项目“广东浓香型特色优质烟叶开发”（粤烟科［2011］28号，201101）；“优质烤烟理想生育进程的研究与应用”（粤烟科［2014］1号，201311）；“优质烟叶精准水肥管理技术的规模应用与示范”（粤烟科［2014］1号，201312）。 （）
