条锈菌侵染对小麦光合作用和蒸腾作用的影响
毕业论文关键词：条锈菌;蒸腾作用;光合作用;小麦
Stripe Rust Effect of Infection on Photosynthesis and Transpiration of Wheat
Abstract: We use the photosynthesis cryoscope determination wheat in the research strip rust-fungus for the wheat photosynthesis and in the transpiration influence process the only photosynthesis speed, the intercellular space carbon dioxide density, the transpiration speed andtheblowhole leading value.The test result showed that,In other factors under the condition which the influence ignores to the experiment, invaded along with the strip rust-fungus dyes the degree increase wheat the photosynthesis and the transpiration occurs obviously changed.Experimental group wheat (strip rust-fungus invades wheat which dyes) the control group wheat (i.e. normal also has not invaded dyes strip rust-fungus wheat) only to photosynthesize the speed value to be smaller than, but experimental group wheat compared to control group wheat intercellular space space carbon density, transpiration speed, blowhole leading value big many, but moreover invades along with the strip rust-fungus dyes the degree differently the difference degree to be different.The wheat the strip rust-fungus coercion function influence, causes the wheat the photosynthesis efficiency to reduce obviously, also reduces to the moisture content use ability along with it.Not only this own moisture content reduces to wheat's physiological biochemistry metabolism is harmful, moreover also can cause the carbon assimilation to receive the inhibitory action.
Key words： Rust-fungus; Transpiration; Photosynthesis; Wheat
目 录
摘要 1
引言 2
1、实验材料与方法 3
2、实验步骤 3
2.1准备材料 3
2.2 仪器操作 4
3、实验结果 4
3.1 条锈菌的侵染对小麦光合作用的影响 4
3.1.1小麦净光合速率的变化情况 4
3.1.2小麦细胞间隙CO2浓度的变化情况 5
3.2条锈菌的侵染对小麦蒸腾作用的影响 6
3.2.1小麦蒸腾速率的变化情况 6
3.2.2小麦气孔导度的变化情况 7
4、结果讨论 7
参考文献 8
致谢 9
条锈菌侵染对小麦光合作用和蒸腾作用的影响引言
在中国农业发展的长远角度来看，小麦条锈菌对小麦是有害的生物。我们需要理解其基本理论，才能对症下药。我们主要研究条锈菌侵染对小麦光合作用和蒸腾作用的影响做系统分析，以求有理有据，然后应用到农业发展中，为我国农业生产做贡献。小麦条锈病是条锈菌在小麦体内产孢子时引起的气传叶部病害，而且条锈菌孢子会覆盖在小麦叶的叶片上使其光合作用和蒸腾作用生理活动产生变化[2]，抑制小麦的营养生长，如果条锈菌侵染严重的还会致使小麦局部或者小麦系统坏死直到停止生长[4]。所以研究条锈菌侵染对小麦光合作用和蒸腾作用的影响，对小麦减产的生理生化基础有重要意义[15]。贾明贵，商鸿生，李振岐等[1]研究发现，条锈菌侵染后小麦幼苗叶片净光合速率降低，条锈菌轻度侵染后小麦幼苗呼吸速率稍微降低，而条锈菌中度和重度侵染的小麦幼苗则会上升。杨小冰，曾士迈等[3]的研究表明条锈菌不同严重程度的侵染对光照强度变化的响应，发现严重度越高，残余健部光合作用极大值越低。条锈菌侵染后的小麦在光合作用、蒸腾作用和同化产物的输导糖代谢过程中的病理变化和库源关系失调儿使得小麦减产[5-8]。但是国际上在小麦的研究领域秆锈病、叶锈病和燕麦冠锈病的致病机理比较详细，而条锈菌的致病机理则比较少[9-11]。条锈菌至于小麦的致病机理对于我们来说就是不了解，但并不代表不存在，所以我们有必要进行条锈菌侵染小麦的病理代谢的基础性研究。
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