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Study on the Biological Characteristics and Water Use Pattern of Malus Toringoides in Western Sichuan

Author: WangHaiYing
Tutor: XuQing
School: Chinese Academy of Forestry
Course: Botany
Keywords: Change叶海棠 Phenotypic variation Soil properties Fruit and leaf nutrient composition analysis Water Use
CLC: S661.4
Type: Master's thesis
Year: 2010
Downloads: 24
Quote: 0
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Abstract


Becomes \the economic and ecological value. Change \Begonia water use patterns were studied in order to lay the foundation for the efficient and sustainable use of this excellent resource. The main conclusions are as follows: 1) the phenotypic indicators of different populations there are significant differences; the Gumby, jade wheat than and Ran Liu three populations of plant height, diameter at breast height, crown traits, Turkoglu populations blades traits, as well as jade wheat than the populations of fruit traits relatively excellent; indicators there is a greater variation within populations and among populations, other indicators were tested variation greater than ranks among populations, in addition to the wide crown and leaves within-group variation; plant height, diameter at breast height, leaf area, leaf length, leaf width, the longitudinal axis of the fruit weight, fruit horizontal axis, fruit was negatively correlated with latitude, fruit, leaf traits and longitude were positively correlated, crown, leaf and fruit traits was significantly negatively correlated with altitude. Take the the UPGMA law, the threshold 4.34 for five populations Euclidean distance is divided into three categories. 2) Luhuo region becomes \Five populations, the best the Turkoglu soil physical structure. The distribution of soil nutrients between the five populations showing different differentiation characteristics, Gumby total N, total P, available K content was significantly higher than in other populations; grid color available P, available N and available K in 5 the relatively low populations; contingent Liu of organic matter, available N, and available P content are the lowest. Overall Luhuo regional total N, total K, organic matter and available nutrient content in the lower level, the total P content is low. Soil trace elements, Ca and Fe content was significantly higher than the other; higher levels of selenium, 0.21 mg · kg-1. The correlation between soil nutrients, total nitrogen and organic matter content, available nitrogen, available potassium was positively correlated with organic matter content and available potassium was positively correlated with the pH value was negatively correlated with total N, available P. Principal component analysis showed that the change \3) phenotypic indicators of soil chemical properties of the different levels of change \fruit horizontal axis, vertical axis and fruit seed weight has a significant positive correlation; available N content was significantly positively correlated with leaf area; total Ca and Fe content and leaves wide significant positive correlation; the full Mg content and leaves several phenotypic indicators The performance of the negative correlation; Mn content tree several phenotypic indicators showed negative correlation; Na content with the fruits of several phenotypic indicators were negatively correlated; different levels of soil nutrients on tree growth differences , 10-40cm soil layer of nutrient indicators with tree phenotype indicators. Physical properties of soil layers phenotypic indicators of change \4) change \Mn and P elements in the fruit was highly significant positive correlation with soil in full Mn. Full of fruit leucine and soil N, available K was a significant positive correlation; isoleucine the Ile and soil total Ca was highly significant positive correlation the tyrosine Tyr and soil Ca was significantly negatively correlated; refined threonine the Arg, serine Ser, glycine Gly soil Mn was significantly negatively correlated. Fruit in the glucose content and soil in the full-N, total P content was significantly positive related, fruit total sugar content and soil total K content was significantly significant negative correlation; fruit polysaccharides and soil quality of the water content was a significant positive correlation fruit fructose and soil density, non-capillary void volume was significantly negatively correlated, the fruit vitamin B2 and soil density, volumetric water content was a significant positive correlation was significantly negatively correlated with the volume of soil aeration degree. Different soil levels of nutrients in the fruit nutrients differences ,10-60cm of soil nutrients greatest impact on fruit mineral element content. 5) two crabapple fruit contains abundant nutrients and mineral elements, fruit Vc content were 2.433mg · kg-1 and 2.133 mg · kg-1, VB2 content was 3.00mg · kg-1 and 2.30 mg · kg-1, total sugar content of 19.045% and 19.163%, respectively. Change \Two alpine crabapple fruit Mn elements, aspartic acid and cystine content difference reached a significant level. Change \The average content of up to 14865.105 mg · kg-1 and 6340.29 mg · kg-1. Two alpine leaf protein content of sugar, glucose significantly different mineral elements except Cu, Mn, Na, S element, the other element content difference reached a significant level. The preliminary study found the change \6) the main source of variable the \rate from 21.95% to 60.01% the Emei Berberis 20.08% to 35.40%; 13.37mm after a precipitation during the rainy season, variable Ye Haitang the precipitation utilization rate of 43.97 percent to 68.51 percent, and Emei Berberis 30.91% to 72.55%; becomes \associated plant Emei Berberis.

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