不同缺素处理对贵州地方水稻品种光合生理特征影响的研究  

Study on the Effect of Different Element Deficiency on the Physiological Characteristics of Local Rice in Guizhou

作　　者：段勇华[1] 赵德刚[1,2] 

机构地区：[1]贵州大学生命科学学院,贵阳550025 [2]贵州大学贵州省农业生物工程重点实验室,贵阳550025

出　　处：《种子》2011年第7期8-12,共5页Seed

基　　金：科技部国家科技支撑计划项目(2007BAD59B06);国家转基因新品种培育重大专项(2008ZX08010-003);贵州大学研究生创新基金项目(校研农2009017)

摘　　要：以从江红皮糯、榕江矮糯、惠水黑糯、从江黑糯、苟央当和黎平无名禾6份贵州地方水稻以及常规品种EY 105为材料,采用营养液培养法,3叶1心期分别进行氮、磷、钾、钙、镁、铁、硫、锌、铜等元素缺乏处理,研究不同营养元素缺乏对供试水稻品种的叶绿素含量(Chl)气孔导度(Gs)和净光合速率(Pn)的影响。结果表明,除惠水黑糯叶片叶绿素含量在缺磷处理升高外,其他缺素处理时水稻叶片叶绿素含量均下降。不同缺素处理对不同水稻品种气孔导度的影响存在差异。除缺钾、磷外其他各种缺素处理下,水稻叶片净光合速率较完全营养液处理降幅差异显著。叶片气孔导度变化与净光合速率变化表明,净光合速率降低不仅与气孔导度下降有关,还与其他非气孔因素有关。综合各指标分析,惠水黑糯、从江红皮糯、从江黑糯和榕江矮糯相对其他品种对不同缺素胁迫具有较强抵抗能力。Six Guizhou local rice Congjiang Red Waxy,Rongjiang short waxy,Huishui Black waxy,Congjiang Black Waxy,Gouyangdang and Liping Wuminghe and conventional variety EY 105 were cultured in solution medium,and studied the effects on chlorophyII content,stomatal conductance and net photosynthetic rate during rice three leaves stage.The results showed that the leaf chlorophyll contents decreased in different nutrient deficiency except Huishui Black waxy increasing in P nutrient deficiency.It was different that changes of leaf stomatal conductance under different nutrient deficiency treatment.Except K and P nutrient deficiencies,the changes of leaf net photosynthetic rate and stomotal conductance in nutrient deficiency were significantly different with that in the full nutrient element solution.The changes of leaf net photosynthetic rate changes were related with the leaf stomatal conductance and other non-stomatal factors.Huishui Black waxy,Congjiang Black Waxy,Congjiang Red Waxy and Rongjiang short waxy had stronger resistance to nutrient deficiency stress than that of other rice varities.

关 键 词：水稻 缺素处理 叶绿素含量 净光合速率 气孔导度 

分 类 号：S511[农业科学—作物学]