| There is a long history of willow cultivation in our country, with fast-growing, water wet,strong resistance,easy to breed,rich genetic variation and other characteristics. To explore the excellent willow resources, development and utilization of their genetic and breeding potential,we conducted a survey of willow germplasm collection and evaluation of salt tolerance.On this basis,select some willow germplasm potential of saline-alkali salt tolerance studies conducted by measuring its growth and p Hysiological and biochemical indicators to evaluate the salt tolerance ability to salt tolerance breeding ability of the willow germplasm resources,while providing a theoretical basis for the willow salt tolerance.The main conclusions are as follows:1. In many parts of the investigation,we collected a total of 356 parts of willow germplasm,the establishment of two willow germplasm bank,located in Shandong Ji′nan and Hebei Haixing.67 parts by willow germplasm external morp Hology were observed,according to a variety of quality in the natural state of salinity stress performance, which can be divided into three levels:Level I:salt tolerance ability of such germplasm, including: A88, A10, B115, B113, B110,B0; Level II :the ability to moderate salt tolerance of such germplasm,the main A16, A44,A27, A81, B13, B3, B40, B56, A6, A64, B20, A39, etc;Level III: germplasm salt tolerance of such poor performance,including A95, B77, B43, A93 and so on.2.The measurement results of growth indexes and physiological parameters(1) With the increase of salt(base) degrees,height increment of various nature have a certain degree of increase in the amount of growth after more than a little at first and trends;based on experimental observations and experimental data analysis, pot experiment results to:A10> A88> A16> A81> A87> A44> A27> A40> A95; hydroponics test measurement results(in part) as:B115> B111> A88> B113> B0> A10> A16(2) With the increase of salt(base) degrees,diameter increment of various nature have a certain degree of increase in the amount of growth after more than a little at first and trends;based on experimental observations and experimental data analysis, pot experiment results to:A10> A16> A88> A87> A95> A44> A81> A40> A27; hydroponics test measurement results(in part) as:B115> B113> A88> B0> B111> A10> A16> A44.(3) With the increase of salt, alkalinity,a variety of quality membrane permeability have a certain degree of increase, and salt,a negative correlation between alkalinity;based on experimental observations and experimental data analysis, pot experiment results:A88> A44>A10> A16> A27> A81> A87> A40> A95; hydroponic experiments,hydroponics test measurement results(in part) as:B115> A88> A44> B111> B113> A10> B110> A16.(4) With the increase of salt, alkalinity, SOD activities of various nature have a certain degree of increase, and salt, a positive correlation between alkalinity; based on experimental observations and experimental data analysis, pot experiment results: A10> A44> A88> A16>A87> A27> A40> A81> A95; hydroponic experiments, some willow germplasm SOD activity size: A88> B0> B113> B115> B111> A10> A16> A44.(5) With the increase of salt, alkalinity, POD activities of various nature have a certain degree of increase, and salt, a positive correlation between alkalinity; based on experimental observations and experimental data analysis, pot experiment results: A88> A10> A16> A44>A87> A27> A81> A40> A95; hydroponic experiments, some willow germplasm POD activity size: A88> B115> B113> B111> B110> A10> B0> A16> A44.(6) With the increase of salt, alkalinity, MDA concentration of various nature have a certain degree of increase, and salt, a negative correlation between alkalinity; based on experimental observations and experimental data analysis, pot experiment results: A88 >A10> A16> A44> A27> A87> A40> A81> A95; hydroponic experiments, some willow germplasm MDA content size: B115> B113> B111> A88> B110> A10> B0> A16> A44.(7) With the increase of salt, alkalinity, CAT activities of various nature have a certain degree of increase, and salt, a positive correlation between alkalinity; based on experimental observations and experimental data analysis, pot experiment results: A10> A88> A16> A40>A44> A87> A27> A81> A95; hydroponic experiments, some willow germplasm of CAT activity size: B115> A88> B111> A10> B110> B113> B0> A44> A16.(8) With increasing salinity, root activity of various nature have a certain degree of increase, and salt, a negative correlation between alkalinity; based on experimental observations and experimental data analysis, part of the root activity willow germplasm size Size It is: B115> A88> B111> A10> B110> B113> B0> A44> A16.3. Evaluation Results(1) The Introduction of germplasm physiological parameters were measured to 67 found that a variety of physiological and biochemical quality trends showed a similar regularity.Relative conductivity,MDA concentration,root activity was negatively correlated with their saline-alkali resistance,SOD activity,POD activity,CAT activity was positively associated with their salt tolerance.(2) The variance of the physiological indices of various qualitative analysis conducted showed that the relative conductivity between germplasm,SOD activity,POD activity,MDA content, CAT activity,root activity were significant or very significant difference.(3)In the pot experiment, saline-alkali resistance test for the strength of the order of 9willow germplasm as: A88> A10> A16> A44> A87> A27> A81> A40> A95. |
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