Dissertation > Excellent graduate degree dissertation topics show

Effect of Chlorophyll Deficient and High Nitrogen on Soybean Photosynthesis Capacity

Author: ZhangXue
Tutor: XuXiaoMing
School: Nanjing Agricultural College
Course: Botany
Keywords: Soybean Chlorophyll a lack of mutant Net photosynthetic rate Heat dissipation Non-photochemical quenching High nitrogen Photosynthetic capacity
CLC: S565.1
Type: Master's thesis
Year: 2010
Downloads: 9
Quote: 0
Read: Download Dissertation


Soybean is an important food and oil crop. Increasing soybean yield is one of the most important breeding aims. About 95% of the crop dry matter comes from the photosynthetic assimilates. Therefore, to increase the light energy use during photosynthetic process is the key for further increasing crop yield and feeding the world’s increasing population. For many years, considerable researches have been carried out, either by conventional breeding methods or by gene transformations, to select and breed for genotypes with superior photosynthetic capacity.In this paper, the soybean varieties are a mutation dealed with EMS chemical mutagen and wild-type 86-4.The soybeans were cultivated with soil and midding as well as high nitrogen nutrient solutions.All the measurements were conducted in 4th health leaves of the main stem after one month. The results are as follows:chlorophyll content of the mutant leaves was significantly lower than that of wild-type, about one half of the wild-type’s, presenting a clear yellow bud traits. From the result of photosynthetic rate, we can see that photosynthetic rate of the mutant leaves was little lower that of wild-type. It is not proportionate with the decrease of chlorophyll content. Chlorophyll deficient induced a decrease of PS II reaction centers and electron transport rate. Furthermore, the energy used to thermal dissipation was lower than wild-type. But from the excitation energy capture by per PSII reaction centers, we can see, the ABS/RC, TR/RC, ET/RC were all increased in the mutant leaves. It is suggested that the mutant can compensate the deficiency of light energy by increasing the activation of PSII unit reaction centers, we also measured the three compositions of NPQ. The results showed that the relationship of primary and secondary of the three compositions of NPQ has changed in the mutant. The proportionmemt of the mutant depended on qT was increased in the higher light.After cultivating with high nitrogen, net photosynthetic rate were both increased in the wild type and the mutant soybeans,but the extent of increasement in the mutant was greater than the wild type. It is indicated that high nitrogen can increase the content of the cholophyll and photosynthetic capcity in the mutant more efficient than in the wild type, and have the potential of high yield.

Related Dissertations

  1. Analysis of Infrared Spectral Features and Identification of Al-responsive Genes in Small Black Soybean with Aluminum Stress,S529
  2. Genetic Model Analysis and QTL Mapping of Agronomic and Quality Traits in Soybean,S565.1
  3. Studieson Effects of Soybean Species on Yuba and Initial Establishment of Quality Evalution System for Yuba,TS214.2
  4. Study on Preparation of Biodiesel Catalyzed by Solid Base,TE667
  5. Study on Processing of Germinated Soybean Accumulating Peptides and Its Soybean Milk,TS214.2
  6. Studies on Effects of Soybean Species on North Tofu Quality and Methods of Evaluation in North Tofu,TS214.2
  7. Agrobacterium-mediated Transformation of GmWRKY21 into Soybean,S565.1
  8. Genetic Characterization and Differentiation of Natural Populations of Wild Soybean from Middle and Lower Valleys of Huanghe and Changjiang as Well as Their Genetic Relationship with the Cultivated Soybean,S565.1
  9. Mapping Quantitative Trait Loci and Domestication Analysis for Seed Size and Shape Traits in Soybean (Glycine Maxl.Merr.),S565.1
  10. Study on Heterosis and Genetic Basis of Soybean,S565.1
  11. Association between Leaf Pubescence Status and Resistance to Globular Stink Bug and Mapping Pubescence Gene in Soybean,S565.1
  12. Effect on Soybean Leaf Light Energy Distribution and Changes in the Characteristics of Anti-Photoinhibition in the Condition of Chlorophyll Defcient,S565.1
  13. Effects of Flooding Stress on Growth and Physiological Charcteristics of Soybean,S565.1
  14. Genetic Dissection and Elite Allele Identification of Seed Traits in Soybean Cultivars Released from Huanghuai Valleys and Southern China,S565.1
  15. The Genetic Transformation and Functional Analysis of GmFtsH,S565.1
  16. The cDNA-AFLP Analysis of Gene Differential Expression and RNA Editing of ATP6 Gene between Cytoplasmic Male Sterile Lines and Their Maintainer Lines in Soybean (Glycine max (L.) Merrill),S565.1
  17. Characterization of Population Structure and Linkage Disequilibrium of Chinese Soybean Landerace Population and QTL Association Analysis of Traits Related to Breeding for Soybeans,S565.1
  18. Development and Application of Biological Seed Coating Formulation for Soybean,S565.1
  19. Mechanisms of Alleviating Effect of Seed Soaking with Soybean Isoflavones on Glycine Max, Salt-born Glycine Soja and Their Hybrid Seedlings under Salt Stress,S565.1
  20. Genetic Diversity, Genetic Variance Association Mapping of Fresh Seed Quality Traits QTLs of G.Max in China,S565.1
  21. The Effects of Isoflavones in Soybean Straw on the Growth and meat Quality of Goat,S826.5

CLC: > Agricultural Sciences > Crop > Economic crops > Oil crops > Soybean
© 2012 www.DissertationTopic.Net  Mobile