CN110121978A - A kind of identification method of Wheat Cultivars germination period salt tolerance - Google Patents
A kind of identification method of Wheat Cultivars germination period salt tolerance Download PDFInfo
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- A01C1/00—Apparatus, or methods of use thereof, for testing or treating seed, roots, or the like, prior to sowing or planting
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Abstract
The invention discloses a kind of identification methods of Wheat Cultivars germination period salt tolerance, belong to agricultural technology application field.The identification method of Wheat Cultivars germination period salt tolerance of the invention is the germination percentage of wheat seed, germinating energy, root long, first leaf length, coleoptile length, shoot dry matter, Miao Xianchong, root dry weight, dry matter Transport Rate under four various concentrations measured, calculate its relative value and weighted average, the weighted average of each index are imported into overall target calculation formula, and calculate comprehensive salt tolerance index.The identification method systematicness of Wheat Cultivars germination period salt tolerance of the present invention is strong, easy to operate, wide adaptability and comprehensive strong, more accurate compared with evaluation of the salt tolerant Subordinate function value method for wheat germination phase salt tolerance, as a result relatively reliable.
Description
Technical field
The invention belongs to agricultural technology application fields, and in particular to a kind of identification of Wheat Cultivars germination period salt tolerance
Method.
Background technique
The salinization of soil and Secondary Saline problem, have become the resource restriction of world's Irrigation farming sustainable development because
Element.In the existing arable land in the world, there are about 3.4 hundred million hm2Solonchak and 5.6 hundred million hm2Soda-saline soil, account for the 60% of total cultivated area, I
The salt-soda soil of state accounts for about the 20% of cultivated area.The salinization of soil and the Secondary Saline heavy losses caused by agricultural production,
It is one of the ecocrisis of facing mankind.Research of the domestic and foreign scholars to crops Saline alkali tolerance to enhancing plant salt endurance, mentions
High crop yield and improvement varieties in saline-alkali areas ecological environment play important function.Numerous salt-soda soils by the way of in, sieve
Selecting New salt-tolerant cultivar is to improve and utilize one of most economical effective method in salt-soda soil.
Wheat is that most important cereal crops, the gross area, total output and total trade occupy cereal crops in the world
First, there is 1/3 or more population using wheat as main food.Under identical conditions, the Seedling height rate and product of wheat breed itself
The salt resistance ability of kind is positively correlated.Seedling height rate dilutes salinity under condition of salt stress, mitigates salt damage, when soil salt is more than one
When fixed limit is spent, wheat growth is suppressed, here it is the Salt Strees Conditions salt damage caused by wheat, gently then growth and development by shadow
Ring, it is heavy then cause wheat death.Therefore, influence of the research Soil Salt Stress to wheat is the important of current Saline soil agriculture development
One of project.
The method of identification salt tolerance of crop has at present: patent " a kind of seed plant sprouting stage Salt-Tolerance Identification method ", application
Number: 201710138050.X；Patent " a kind of method of cotton seeds Salt-Tolerance Identification ", application number: 201811460623.1；Specially
Sharp " a kind of identification method of wheat sprouting stage salt tolerance ", application number: 201410006260.X；Measurement exists in the prior art in these
Index is single, and the salt tolerance for evaluating wheat has certain one-sidedness, and salt concentration gradient is few, has certain limitation,
The synthesis sprouting state of crop under multilevel condition of salt stress is not can reflect.
Summary of the invention
Aiming at the problems existing in the prior art, the purpose of the present invention is to provide one kind sets about from multilevel, multifactor,
Systemic strong, easy to operate, wide adaptability and comprehensive strong, result is accurately the same as the identification side of wheat breed germination period salt tolerance
Method.
In order to achieve the above object, the technical solution adopted by the present invention are as follows:
A kind of identification method of Wheat Cultivars germination period salt tolerance, steps are as follows:
(1) measurement of wheat relative germination rate and relative germination rate to be measured
According to every liter of distilled water add respectively 4.68g, 9.36g, 14.04g NaCl be configured to 80mmol/L, 160mmol/L,
240mmol/L NaCl solution, respectively with 0mmol/L, 80mmol/L, 160mmol/L, 240mmol/L NaCl solution processing to
Wheat seed is surveyed, 21 DEG C of constant temperature in the light incubator is set and is placed under room temperature after dark culturing 24 hours, is divided after three days
Not Ce Ding control group and processing group germination percentage, germinating energy is measured after seven days, and calculate wheat breed to be measured 0mmol/L,
Relative germination rate and relative germination rate under the processing of 80mmol/L, 160mmol/L, 240mmol/L NaCl solution:
Germination percentage (%)=(M1/M) × 100%；
Germinating energy (%)=(M2/M) × 100%；
In formula:
M1 --- all normal germination seed grain numbers；
M2 --- the normal germination seed grain number in germinating energy number of days；
M --- for planting experimentally seed number；
Relative germination rate (%)=processing germination percentage/control germination percentage × 100%；
Relative germination rate (%)=processing germinating energy/control germinating energy × 100%；
(2) wheat germination phase salt stress to be measured handles opposite root long, opposite first leaf length, opposite coleoptile length and measures
Wheat seed to be measured is handled with 0mmol/L, 80mmol/L, 160mmol/L, 240mmol/L NaCl solution, is placed in
21 DEG C of constant temperature in illumination box is placed under room temperature after dark culturing 24 hours, randomly selects 5 from each processing after seven days
Strain wheat seedling, measures the root long, first leaf length and coleoptile length of control group and processing group respectively, and calculates opposite root long, phase
To first leaf length, opposite coleoptile length；
(3) wheat germination phase salt stress to be measured handles opposite shoot dry matter, opposite seedling fresh weight, opposite root dry weight and measures and transport
Rate measurement
Wheat seed to be measured is handled with 0mmol/L, 80mmol/L, 160mmol/L, 240mmol/L NaCl solution, is placed in
21 DEG C of constant temperature in illumination box is placed under room temperature after dark culturing 24 hours, randomly selects 5 from each processing after seven days
After measuring control group and the seedling fresh weight of processing group, it is remaining to weigh shoot dry matter, root dry weight and seed after 37 DEG C of drying for strain wheat seedling
Dry weight, and calculate opposite shoot dry matter, opposite seedling fresh weight, opposite root dry weight and dry matter Transport Rate；
Dry matter Transport Rate=(root dry weight+shoot dry matter)/(root dry weight+shoot dry matter+seed residue dry weight)；
(4) wheat germination phase salt tolerance comprehensive identification
Measure the germination percentage of wheat seed under aforementioned four various concentration, germinating energy, root long, first leaf length, plumule
Length, shoot dry matter, Miao Xianchong, root dry weight, dry matter Transport Rate number it are as follows: X in sequence1、X2、X3、X4、X5、X6、X7、X8、
X9, its relative value and weighted average are calculated, using Principal Component Analysis by X1~X9Weighted average be directed respectively into following public affairs
Formula obtains overall target: Y1, Y2, Y3:
Y1=-0.087X1-0.066X2+0.22X3+0.269X4+0.274X5+0.253X6-0.042X7+0.088X8+
0.146X9；
Y2=0.384X1+0.405X2+0.139X3+0.014X4+0.025X5+0.002X6+0.259X7+0.193X8+
0.089X9；
Y3=-0.323X1-0.267X2-0.097X3-0.123X4-0.238X5-0.055X6+0.504X7+0.409X8+
0.501X9；
By above-mentioned Y1、Y2And Y3Value imports comprehensive salt tolerance index formula, calculates the comprehensive salt tolerance index of wheat samples to be measured:
Comprehensive salt tolerance index Y=0.36746Y1+0.2502Y2+0.11925Y3；
(5) wheat germination phase salt tolerance grade scale
| Rank | Salt tolerance | Y value |
| I | It is high resistance to | 6.412-7.462 |
| II | In it is resistance to | 4.889-6.038 |
| III | It is low resistance to | 3.400-4.645 |
| IV | It is sensitive | 1.877-3.158 |
The above-mentioned synthesis salt tolerance index Y being calculated is corresponded into wheat germination phase salt tolerance grade scale, is obtained to be measured small
The salt tolerance of wheat sample.
The advantages of technical solution of the present invention:
The identification method systematicness of Wheat Cultivars germination period salt tolerance of the present invention is strong, easy to operate, wide adaptability and
Comprehensive strong, the Salt Tolerance of whole system keeps the selection result relatively reliable all under controlled condition, using limited interior
Space carries out the preliminary screening of lot of materials, accelerates salt tolerant breeding process.
Salt tolerant Subordinate function value method is also a kind of preferable salt tolerance integrated evaluating method, and the method for the present invention is subordinate to compared with salt tolerant
Membership fuction value method is more accurate for the evaluation of wheat germination phase salt tolerance, as a result relatively reliable, and the method for the present invention is more applicable in
In the quick and precisely screening of wheat germination phase salt tolerance.
The method of the present invention uses each index relative value, can objectively react the extent of damage of the wheat under salt stress, disappear
Except the ecology development difference of inter-species, comprehensive difference in conventional identification method is overcome, identification result inaccuracy not can be carried out salt tolerant
The disadvantages of prediction, and found by the correlation analysis that wheat under salt stress respectively sprouts character, third day under salt stress
Opposite root long and first leaf it is long it is significant be positively correlated, can also be mainly by the therefore when field test is not easy to measurement root system
The salt tolerance of the research evaluation wheats of the characters factor such as a piece of leaf length.
Specific embodiment
Term as used in the present invention generally has those of ordinary skill in the art usual unless otherwise specified
The meaning of understanding.
Combined with specific embodiments below, and referring to the data further detailed description present invention.Following embodiment only be
It illustrates the present invention, rather than limits the scope of the invention in any way.
Embodiment
A kind of identification method of Wheat Cultivars germination period salt tolerance, steps are as follows:
(1) measurement of wheat relative germination rate and relative germination rate to be measured
According to every liter of distilled water add respectively 4.68g, 9.36g, 14.04g NaCl be configured to 80mmol/L, 160mmol/L,
240mmol/L NaCl solution, respectively with 0mmol/L, 80mmol/L, 160mmol/L, 240mmol/L NaCl solution processing to
Wheat seed is surveyed, 21 DEG C of constant temperature in the light incubator is set and is placed under room temperature after dark culturing 24 hours, is divided after three days
Not Ce Ding control group and processing group germination percentage, germinating energy is measured after seven days, and calculate wheat breed to be measured 0mmol/L,
Relative germination rate and relative germination rate under the processing of 80mmol/L, 160mmol/L, 240mmol/L NaCl solution:
Germination percentage (%)=(M1/M) × 100%；
Germinating energy (%)=(M2/M) × 100%；
In formula:
M1 --- all normal germination seed grain numbers；
M2 --- the normal germination seed grain number in germinating energy number of days；
M --- for planting experimentally seed number；
Relative germination rate (%)=processing germination percentage/control germination percentage × 100%；
Relative germination rate (%)=processing germinating energy/control germinating energy × 100%；
(2) wheat germination phase salt stress to be measured handles opposite root long, opposite first leaf length, opposite coleoptile length and measures
Wheat seed to be measured is handled with 0mmol/L, 80mmol/L, 160mmol/L, 240mmol/L NaCl solution, is placed in
21 DEG C of constant temperature in illumination box is placed under room temperature after dark culturing 24 hours, randomly selects 5 from each processing after seven days
Strain wheat seedling, measures the root long, first leaf length and coleoptile length of control group and processing group respectively, and calculates opposite root long, phase
To first leaf length, opposite coleoptile length；
(3) wheat germination phase salt stress to be measured handles opposite shoot dry matter, opposite seedling fresh weight, opposite root dry weight and measures and transport
Rate measurement
Wheat seed to be measured is handled with 0mmol/L, 80mmol/L, 160mmol/L, 240mmol/L NaCl solution, is placed in
21 DEG C of constant temperature in illumination box is placed under room temperature after dark culturing 24 hours, randomly selects 5 from each processing after seven days
After measuring control group and the seedling fresh weight of processing group, it is remaining to weigh shoot dry matter, root dry weight and seed after 37 DEG C of drying for strain wheat seedling
Dry weight, and calculate opposite shoot dry matter, opposite seedling fresh weight, opposite root dry weight and dry matter Transport Rate；
Dry matter Transport Rate=(root dry weight+shoot dry matter)/(root dry weight+shoot dry matter+seed residue dry weight)；
(4) wheat germination phase salt tolerance comprehensive identification
Measure the germination percentage of wheat seed under aforementioned four various concentration, germinating energy, root long, first leaf length, plumule
Length, shoot dry matter, Miao Xianchong, root dry weight, dry matter Transport Rate number it are as follows: X in sequence1、X2、X3、X4、X5、X6、X7、X8、
X9, its relative value and weighted average are calculated, using Principal Component Analysis by X1~X9Weighted average be directed respectively into following public affairs
Formula obtains overall target: Y1, Y2, Y3:
Y1=-0.087X1-0.066X2+0.22X3+0.269X4+0.274X5+0.253X6-0.042X7+0.088X8+
0.146X9；
Y2=0.384X1+0.405X2+0.139X3+0.014X4+0.025X5+0.002X6+0.259X7+0.193X8+
0.089X9；
Y3=-0.323X1-0.267X2-0.097X3-0.123X4-0.238X5-0.055X6+0.504X7+0.409X8+
0.501X9；
By above-mentioned Y1、Y2And Y3Value imports comprehensive salt tolerance index formula, calculates the comprehensive salt tolerance index of wheat samples to be measured:
Comprehensive salt tolerance index Y=0.36746Y1+0.2502Y2+0.11925Y3；
(5) wheat germination phase salt tolerance grade scale
| Rank | Salt tolerance | Y value |
| I | It is high resistance to | 6.412-7.462 |
| II | In it is resistance to | 4.889-6.038 |
| III | It is low resistance to | 3.400-4.645 |
| IV | It is sensitive | 1.877-3.158 |
The above-mentioned synthesis salt tolerance index Y being calculated is corresponded into wheat germination phase salt tolerance grade scale, is obtained to be measured small
The salt tolerance of wheat sample.
Comparative example
Subordinate Function is to the identification method of Wheat Cultivars germination period salt tolerance, and steps are as follows:
Using the method in embodiment obtain the relative germination rate of wheat seed under four various concentrations, relative germination rate,
It is opposite root long, opposite first leaf length, opposite coleoptile length, opposite shoot dry matter, opposite seedling fresh weight, opposite root dry weight, relatively dry
Substance transportation rate；And calculate the membership function value of above-mentioned 9 indexs:
U(Xj)=[Xij- Xjmin]/[Xjmax- Xjmin], j=1,2,3 ...
In formula: U (Xj)) be j-th of index membership function value, XijFor the salt tolerant efficiency of i-th of material, j-th of index；
XjmaxAnd XjminThe maximum value and minimum value for j-th of the index drought resistance coefficient in material of respectively respectively participating in the experiment；
The membership values of each salt-tolerance index for the Wheat Cultivars that the above method obtains are added up, are sought average
Number is to get comprehensive salt tolerant efficiency out；Comprehensive salt tolerant efficiency corresponds to wheat germination phase salt tolerance grade scale, obtains wheat sample to be measured
The salt tolerance of product.The synthesis salt tolerant efficiency of each wheat breed is bigger, and salt tolerance is stronger.
Subordinate Function grade scale
| Rank | Salt tolerance | Comprehensive salt tolerant efficiency |
| I | It is high resistance to | ≥0.7 |
| II | Salt tolerant | ≥0.6 |
| III | In it is resistance to | ≥0.4 |
| IV | It is low resistance to | ≥0.3 |
| V | It is sensitive | < 0.3 |
As a result with analysis
Table 1 is for trying wheat breed
Wheat respectively sprouts the relative value of character under 2 condition of salt stress of table
The variance analysis that 3 wheat of table responds salt stress
Wheat respectively sprouts the related coefficient of character under 4 salt stress of table
For * at 0.01 rank (double tails), correlation is significant.
* at 0.05 rank (double tails), correlation is significant.
Wheat respectively sprouts the significance analysis and relative value of character under 5 salt stress of table
Wheat respectively sprouts the relative value of character under condition of salt stress after table 6 weights
73 principal component characteristic values of table and contribution rate of accumulative total
Each Factor load-matrix of table 8
Each component vector matrix of table 9
The main composition Y value of each wheat breed of table 10 and salt tolerance sequence
The germination period Salt-Tolerance Identification result of 11 40 parts of Wheat Germplasm Resources of table
| Salt tolerant classification | Kind number |
| Ⅰ | 1,2,20,24 |
| Ⅱ | 4,5,6,9,13,14,15,16,18,19,21,30,39,40 |
| Ⅲ | 3,8,10,11,12,17,22,23,25,26,27,32,33,35,36,38 |
| Ⅳ | 7,28,29,31,34,37 |
As shown in table 10, table 11, the present embodiment method has carried out germination period Salt-Tolerance Identification to 40 parts of materials of participating in the experiment, discovery
Participated in the experiment wheat germplasm Y value difference is obvious, suitable for the overall merit of wheat germination phase salt tolerance, in the 40 portions of wheats participated in the experiment
Identify 4 parts of I grade of resistance to wheat germplasms of height in kind altogether, resistance to wheat germplasm in 14 parts II grade, 16 parts of III grade of low resistance to wheat germplasms, 6
IV sensitive wheat germplasm of part, accounts for 10%, 35%, 40%, the 15% of wheat germplasm of participating in the experiment respectively.This is mostly drought resisting with material of participating in the experiment
Salt-enduring cultivars are consistent, and further illustrating the technology can be used for identifying Wheat Germplasm Resources germination period salt tolerance.
Subordinate Function
Wheat respectively sprouts the membership function value of character under 12 condition of salt stress of table
The comprehensive salt tolerant efficiency of each wheat breed of table 13 and salt tolerance sequence
The germination period Salt-Tolerance Identification result of 14 40 parts of Wheat Germplasm Resources of table
As shown in table 13, table 14, germination period Salt-Tolerance Identification has been carried out to 40 parts of materials of participating in the experiment using Subordinate Function, has been sent out
The existing comprehensive salt tolerant efficiency value difference of participated in the experiment wheat germplasm is different obviously, suitable for the overall merit of wheat germination phase salt tolerance,
Identify 1 part of I grade of resistance to wheat germplasm of height in the 40 parts of wheat breeds participated in the experiment altogether, 3 parts of II grade of Salt-tolerant Wheat germplasm, in 20 parts III grade
Resistance to wheat germplasm, 8 part of IV low resistance to wheat germplasm, 8 parts of sensitive wheat germplasm, account for respectively wheat germplasm of participating in the experiment 2.5%, 7.5%,
50%, 20%, 20%.
Subordinate Function compared with the method for the present invention, the method for the present invention for the evaluation more of wheat germination phase salt tolerance subject to
Really, for example, green wheat No. 6, it is small lay down 60 and to melt No. 3 be the preferable wheat breed of known salt tolerance on mountain, reflected using the method for the present invention
It is fixed they belong to I grade high resistance to wheat germplasms, and use membership function rule by green wheat No. 6 with it is small lay down 60 be classified as it is resistance in III level
Wheat germplasm.
The above described is only a preferred embodiment of the present invention, being not that the invention has other forms of limitations, appoint
What those skilled in the art changed or be modified as possibly also with the technology contents of the disclosure above equivalent variations etc.
Imitate embodiment.But without departing from the technical solutions of the present invention, according to the technical essence of the invention to above embodiments institute
Any simple modification, equivalent variations and the remodeling made, still fall within the protection scope of technical solution of the present invention.
Claims (1)
1. a kind of identification method of Wheat Cultivars germination period salt tolerance, it is characterised in that: steps are as follows:
(1) measurement of wheat relative germination rate and relative germination rate to be measured
According to every liter of distilled water add respectively 4.68g, 9.36g, 14.04g NaCl be configured to 80mmol/L, 160mmol/L,
240mmol/L NaCl solution, respectively with 0mmol/L, 80mmol/L, 160mmol/L, 240mmol/L NaCl solution processing to
Wheat seed is surveyed, 21 DEG C of constant temperature in the light incubator is set and is placed under room temperature after dark culturing 24 hours, surveyed after three days
Determine the germination percentage of control group and processing group, measure germinating energy after seven days, and calculates wheat breed to be measured in 0mmol/L, 80mmol/
L, the relative germination rate and relative germination rate under the processing of 160mmol/L, 240mmol/L NaCl solution:
Germination percentage (%)=(M1/M) × 100%；
Germinating energy (%)=(M2/M) × 100%；
In formula:
M1 --- all normal germination seed grain numbers；
M2 --- the normal germination seed grain number in germinating energy number of days；
M --- for planting experimentally seed number；
Relative germination rate (%)=processing germination percentage/control germination percentage × 100%；
Relative germination rate (%)=processing germinating energy/control germinating energy × 100%；
(2) wheat germination phase salt stress to be measured handles opposite root long, opposite first leaf length, opposite coleoptile length and measures
Wheat seed to be measured is handled with 0mmol/L, 80mmol/L, 160mmol/L, 240mmol/L NaCl solution, is placed in illumination
21 DEG C of constant temperature in incubator is placed under room temperature after dark culturing 24 hours, after seven days from it is each processing randomly select it is 5 plants small
Wheat seeding, measures that the root long of control group and processing group, first leaf be long and coleoptile length respectively, and calculates opposite root long, opposite the
A piece of leaf length, opposite coleoptile length；
(3) wheat germination phase salt stress to be measured handles opposite shoot dry matter, opposite seedling fresh weight, opposite root dry weight measurement and Transport Rate and surveys
It is fixed
Wheat seed to be measured is handled with 0mmol/L, 80mmol/L, 160mmol/L, 240mmol/L NaCl solution, is placed in illumination
21 DEG C of constant temperature in incubator is placed under room temperature after dark culturing 24 hours, after seven days from it is each processing randomly select it is 5 plants small
After measuring control group and the seedling fresh weight of processing group, it is dry to weigh shoot dry matter, root dry weight and seed residue after 37 DEG C of drying for wheat seeding
Weight, and calculate opposite shoot dry matter, opposite seedling fresh weight, opposite root dry weight and dry matter Transport Rate；
Dry matter Transport Rate=(root dry weight+shoot dry matter)/(root dry weight+shoot dry matter+seed residue dry weight)；
(4) wheat germination phase salt tolerance comprehensive identification
Measure the germination percentage of wheat seed under aforementioned four various concentration, germinating energy, root long, first leaf length, coleoptile length, bud
Dry weight, Miao Xianchong, root dry weight, dry matter Transport Rate number it are as follows: X in sequence1、X2、X3、X4、X5、X6、X7、X8、X9, meter
Its relative value and weighted average are calculated, using Principal Component Analysis by X1~X9Weighted average be directed respectively into following formula and obtain
Obtain overall target: Y1, Y2, Y3:
Y1=-0.087X1-0.066X2+0.22X3+0.269X4+0.274X5+0.253X6-0.042X7+0.088X8+0.146X9；
Y2=0.384X1+0.405X2+0.139X3+0.014X4+0.025X5+0.002X6+0.259X7+0.193X8+0.089X9；
Y3=-0.323X1-0.267X2-0.097X3-0.123X4-0.238X5-0.055X6+0.504X7+0.409X8+0.501X9；
By above-mentioned Y1、Y2And Y3Value imports comprehensive salt tolerance index formula, calculates the comprehensive salt tolerance index of wheat samples to be measured:
Comprehensive salt tolerance index Y=0.36746Y1+0.2502Y2+0.11925Y3
(5) wheat germination phase salt tolerance grade scale
The above-mentioned synthesis salt tolerance index Y being calculated is corresponded into wheat germination phase salt tolerance grade scale, obtains wheat sample to be measured
The salt tolerance of product.
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| ZA2020/03311A ZA202003311B (en) | 2019-06-04 | 2020-06-03 | Method for identifying salt tolerance of different wheat cultivar in germination period |
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| CN111855751A (en) * | 2020-08-14 | 2020-10-30 | 南通大学 | Method for rapidly evaluating salt tolerance of willow variety based on resistance value |
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| CN111855751A (en) * | 2020-08-14 | 2020-10-30 | 南通大学 | Method for rapidly evaluating salt tolerance of willow variety based on resistance value |
| CN111855751B (en) * | 2020-08-14 | 2021-02-19 | 南通大学 | Method for rapidly evaluating salt tolerance of willow variety based on resistance value |
| CN113615421A (en) * | 2021-09-17 | 2021-11-09 | 上海市农业科学院 | Method for screening salt-resistant materials in germination period of highland barley |
| CN114375789A (en) * | 2022-01-10 | 2022-04-22 | 河北科技师范学院 | Comprehensive evaluation method for salt and alkali tolerance of wild soybean |
| CN116410985A (en) * | 2022-11-21 | 2023-07-11 | 青岛农业大学 | Wheat TaNF-YB3D gene, alternative splicing form and application thereof |
| CN116250479A (en) * | 2023-02-15 | 2023-06-13 | 青岛农业大学 | Screening method of novel salt-tolerant selenium-rich wheat germplasm |
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| CN110121978B (en) | 2021-04-13 |
| ZA202003311B (en) | 2021-07-28 |
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