【摘 要】
:
Researches on the relationship between photosynthesis and wheat yield have equally attracted the attention of both domestic and overseas scholars. No report has
【机 构】
:
College of Life Science,College English Department
论文部分内容阅读
Researches on the relationship between photosynthesis and wheat yield have equally attracted the attention of both domestic and overseas scholars. No report has existed so far on the study of the effects of exogenous chromosomes on photosynthesis using the substitution series as materials. In this research, Triticum aestivum cv. Chinese Spring-Lophopyrum elongatum (Host) A.L(o)ve disomic substitution series were used as materials and flag leaves as the measuring position. And the CI-310 Portable Photosynthesis System made by CID Co. in USA was used to measure the net rate of photosynthesis of flag leaves in different developing stages and also to correlate photosynthesis with yield. Results showed that, out of the whole developing stages, at the anthesis stage the line of DS2Ee (2A) had the highest photosynthetic rate, therefore it could be used in improving process of the character of kernel number. The flag leaves of DS4Ee (4A, 4B, 4D) lines demonstrated certain high net photosynthetic rate from heading to grain filling stage, so it is valuable in the researh of promoting the yield index like 1000-grain weight through improvement of the photosynthetic rate at grain filling stage.
其他文献
Ubiquitous computing systems typically have lots of security problems in the area of identity authentication by means of classical PKI methods. The limited comp
The compressive strength and flexural toughness as well as fracture energy of fiber reinforced high performance concrete(FRHPC)subjected to different high tempe
Many biodiversity indices were used to indicate the biological contamination degree in studies of lake water or seawater.Some were studied on biodiversity compa
The formation and development of corrosion products on carbon steel surface during the initial stage of atmospheric corrosion in a laboratory simulated environm
Using the grey correlation analysis, it can be concluded that the reactor pressure vessel wall temperature has the strongest effect on the passive residual heat
The formability of bake hardened steel (thickness 0.82 ram),and the extra galvannealed IF steel (thickness 0.82 ram) have been studied.The suitability of the ab
将代理缓存、补丁、和固定间隔组播结合起来用于分布式服务架构下的热点视频分发.在此架构下,我们假设从远端服务器到本地的代理服务和从本地的服务器到客户的路径上都具有组
近年来,随着经济发展和生活方式的改变,2型糖尿病(T2DM)发病率在我国呈现逐渐升高的趋势。T2DM是一种遗传因素和环境因素共同作用而形成的多基因遗传的复杂性疾病,并以胰岛素分
目的:探讨低温等离子微创技术在鼻瓣区狭窄手术中的临床应用。方法对30例鼻瓣区狭窄患者进行低温等离子微创技术治疗。结果全部手术过程顺利,术后患者鼻塞症状缓解显著,通气效果
介绍上海市名中医林水淼教授中医药治疗老年动脉粥样硬化的临床经验.林师将该病称为“脉劳”认为血脉当有劳,以延缓衰老为着眼点,从衰入手,还精为本,补益精血为其治疗的重要