CN111587629B - Peanut seed initiation method for improving drought resistance - Google Patents
Peanut seed initiation method for improving drought resistance Download PDFInfo
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- CN111587629B CN111587629B CN202010460117.3A CN202010460117A CN111587629B CN 111587629 B CN111587629 B CN 111587629B CN 202010460117 A CN202010460117 A CN 202010460117A CN 111587629 B CN111587629 B CN 111587629B
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- 241001553178 Arachis glabrata Species 0.000 title claims abstract description 77
- 235000020232 peanut Nutrition 0.000 title claims abstract description 72
- 235000017060 Arachis glabrata Nutrition 0.000 title claims abstract description 62
- 235000010777 Arachis hypogaea Nutrition 0.000 title claims abstract description 62
- 235000018262 Arachis monticola Nutrition 0.000 title claims abstract description 62
- 238000000034 method Methods 0.000 title claims abstract description 15
- 230000000977 initiatory effect Effects 0.000 title abstract description 14
- IXVMHGVQKLDRKH-VRESXRICSA-N Brassinolide Natural products O=C1OC[C@@H]2[C@@H]3[C@@](C)([C@H]([C@@H]([C@@H](O)[C@H](O)[C@H](C(C)C)C)C)CC3)CC[C@@H]2[C@]2(C)[C@@H]1C[C@H](O)[C@H](O)C2 IXVMHGVQKLDRKH-VRESXRICSA-N 0.000 claims abstract description 51
- IXVMHGVQKLDRKH-KNBKMWSGSA-N brassinolide Chemical compound C1OC(=O)[C@H]2C[C@H](O)[C@H](O)C[C@]2(C)[C@H]2CC[C@]3(C)[C@@H]([C@H](C)[C@@H](O)[C@H](O)[C@@H](C)C(C)C)CC[C@H]3[C@@H]21 IXVMHGVQKLDRKH-KNBKMWSGSA-N 0.000 claims abstract description 51
- 230000008641 drought stress Effects 0.000 claims abstract description 33
- 238000002791 soaking Methods 0.000 claims abstract description 23
- 238000009331 sowing Methods 0.000 claims abstract description 12
- 230000017260 vegetative to reproductive phase transition of meristem Effects 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 239000002689 soil Substances 0.000 claims description 11
- 241000196324 Embryophyta Species 0.000 abstract description 18
- 230000000694 effects Effects 0.000 abstract description 15
- 229930002875 chlorophyll Natural products 0.000 abstract description 6
- 235000019804 chlorophyll Nutrition 0.000 abstract description 6
- ATNHDLDRLWWWCB-AENOIHSZSA-M chlorophyll a Chemical compound C1([C@@H](C(=O)OC)C(=O)C2=C3C)=C2N2C3=CC(C(CC)=C3C)=[N+]4C3=CC3=C(C=C)C(C)=C5N3[Mg-2]42[N+]2=C1[C@@H](CCC(=O)OC\C=C(/C)CCC[C@H](C)CCC[C@H](C)CCCC(C)C)[C@H](C)C2=C5 ATNHDLDRLWWWCB-AENOIHSZSA-M 0.000 abstract description 6
- 230000012010 growth Effects 0.000 abstract description 5
- 230000037452 priming Effects 0.000 abstract description 5
- 150000001647 brassinosteroids Chemical class 0.000 abstract description 3
- 230000001737 promoting effect Effects 0.000 abstract description 2
- 238000002474 experimental method Methods 0.000 description 13
- 238000012360 testing method Methods 0.000 description 9
- 235000013399 edible fruits Nutrition 0.000 description 6
- 230000000243 photosynthetic effect Effects 0.000 description 6
- 238000011282 treatment Methods 0.000 description 6
- 230000029553 photosynthesis Effects 0.000 description 5
- 238000010672 photosynthesis Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 230000009418 agronomic effect Effects 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000002068 genetic effect Effects 0.000 description 2
- 150000002632 lipids Chemical class 0.000 description 2
- 102000004169 proteins and genes Human genes 0.000 description 2
- 108090000623 proteins and genes Proteins 0.000 description 2
- 235000007328 Hericium erinaceus Nutrition 0.000 description 1
- 102000003992 Peroxidases Human genes 0.000 description 1
- 230000036579 abiotic stress Effects 0.000 description 1
- 238000005842 biochemical reaction Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000003306 harvesting Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 108040007629 peroxidase activity proteins Proteins 0.000 description 1
- 230000008635 plant growth Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000009758 senescence Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C1/00—Apparatus, or methods of use thereof, for testing or treating seed, roots, or the like, prior to sowing or planting
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Environmental Sciences (AREA)
- Pretreatment Of Seeds And Plants (AREA)
Abstract
The invention discloses a peanut seed initiation method for improving drought resistance, which is characterized in that peanut seeds are placed in a brassinolide solution with the concentration of 0.05-0.20ppm for soaking for at least 8 hours, and then sowing is carried out. Under drought stress, brassinosteroids have more obvious effect of promoting peanut growth and quality; preferably, the method is that after sowing, the peanuts grow to the flowering period, drought stress is carried out for 7 days or 14 days, and normal watering is carried out for the rest period. Under drought conditions, the seed priming method provided by the invention can improve the plant height of peanut plants, increase the chlorophyll content, improve the peanut yield, comprise the single plant fruiting number, the hundred-kernel weight and the kernel yield, and have no influence on the quality of kernels (comprising the oil content and the protein content).
Description
Technical Field
The invention belongs to the technical field of seed processing, and particularly relates to a peanut seed initiating method for improving drought resistance.
Background
Peanut is one of the most important oil crops in the world, and China is the world where peanut is produced. The yield area of more than 70% of peanuts in China is threatened by drought of different degrees throughout the year. Drought is one of the major limiting factors affecting peanut yield and kernel quality.
Mild drought stress increases peanut economic yield and increases its harvest index, but the degree of drought stress aggravates to moderate drought stress (hereinafter simply referred to as drought) and the opposite trend is seen. The drought stress influences the phenotype change, physiological and biochemical reaction and the like of peanuts, and common evaluation indexes comprise biological yield related indexes, physiological and biochemical indexes such as photosynthesis, peroxidase, permeable substances and the like, and important agronomic characters and the like.
The response of different peanut varieties to drought is different, the drought stress reduces the plant height, leaf area coefficient, overground part and pod dry weight of the peanut at different growth periods to different degrees, and the reduction amplitude is increased along with the extension of the treatment time, so that the physiological characteristics, agronomic characters and yield of the peanut are influenced.
The drought in seedling stage has minimal effect on pod yield, and then the full fruit maturity stage, the flower needle stage and the pod bearing stage. Drought has a large impact on pod yield. The effect of drought stress on pods during the pod bearing period of peanuts is manifested by changes in pod development initiation time, development rate, maturity and final yield. The water demand of the peanut in the full-fruit maturity stage is less, but drought stress in the stage leads to early senescence of the peanut, and the full-fruit rate is reduced, so that the yield is reduced. The effect of drought stress in seedling stage on pod yield is mainly related to the reduction of effective number, the effect of drought stress in full-fruit mature stage on pod yield is mainly related to the reduction of pod plumpness, and the effect of drought stress in flower needle stage and pod bearing stage on pod yield is the result of the common cause of fewer effective results and low plumpness.
In the current peanut production in China, the cultivation of new drought-resistant varieties is one of main ways for improving and improving the drought resistance of peanuts. However, the existing cultivars in China mainly comprise related varieties of Fu peanut and lion head enterprise, the genetic foundation is narrow, the germplasm resources are relatively deficient, and the way for cultivating new cultivars is relatively complex and long.
In summary, the problems of the prior art are:
(1) Drought becomes an important abiotic stress factor affecting peanut yield and quality.
(2) The genetic foundation of the peanut is narrow, the germplasm resources are relatively deficient, and the cultivation of new drought-resistant varieties is complex and long.
Disclosure of Invention
The invention aims to provide a peanut seed initiation method for improving drought resistance.
The aim of the invention is achieved by the following technical scheme:
A peanut seed initiating method comprises soaking peanut seeds in 0.05-0.20ppm Brassinolide (BR) solution for at least 8 hr, and sowing;
the concentration of the brassinolide solution is preferably 0.15ppm;
Experiments show that under the initiation of brassinosteroids, the plant height, chlorophyll content, photosynthetic efficiency, peanut yield and quality of peanuts are improved compared with a control group no matter whether the peanuts are normally watered or drought stressed;
Under drought stress, brassinosteroids have more obvious effect of promoting peanut growth and quality;
preferably, the method is that after sowing, the peanuts grow to the flowering period, drought stress is carried out for 7 days or 14 days, and normal watering is carried out in the rest period;
the drought stress refers to the relative water content in the planting soil is less than or equal to 40%;
the normal watering means that the relative water content in the planting soil is more than or equal to 75 percent.
Compared with the prior art, the invention has the following advantages and effects:
1. Under drought conditions, the seed priming method provided by the invention can improve the plant height of peanut plants, and obviously reduce the influence of drought stress on peanut growth.
2. Under drought conditions, the seed priming method of the invention significantly increases chlorophyll content and photosynthetic rate, and reduces the influence of drought stress on photosynthesis.
3. The seed priming method of the invention obviously improves peanut yield, including single plant fruiting number, hundred fruit weight, hundred kernel weight and kernel yield, and has no influence on seed quality (including grease content and protein content).
4. The seed priming method provided by the invention is simple and feasible and has low cost.
Drawings
FIG. 1 is the effect of drought stress and BR initiation on peanut plant height.
FIG. 2 is the effect of drought stress and BR initiation on peanut yield and quality; wherein the letters represent significant differences (p < 0.05) under normal watering and different drought conditions. * And represent significant differences between different BR triggers at p <0.05 and p <0.01 levels, respectively.
Detailed Description
The present invention will be described in further detail with reference to examples and drawings, but embodiments of the present invention are not limited thereto.
Example 1
BR initiation promotes peanut plant growth under drought conditions
Experimental materials: peanut seed and flower cultivation 39.
The tests were divided into 20 groups, respectively:
experiment group 1: soaking peanut seeds in water for 8 hours, sowing, and carrying out drought stress (the relative water content of soil=40%) for 7 days in a flowering period (32 days after sowing); normal watering (soil relative water content=75%);
Control group 1: soaking peanut seeds in water for 8 hours, sowing, and normally watering (the relative water content of soil is 75 percent);
Experiment group 2: soaking peanut seeds in 0.05ppm brassinolide BR solution, and the rest is the same as in experiment group 1;
Control group 2: soaking peanut seeds in 0.05ppm brassinolide BR solution, the other seeds being the same as control 1;
Experiment group 3: soaking peanut seeds in 0.10ppm brassinolide BR solution, the other steps being the same as in experiment group 1;
control group 3: soaking peanut seeds in 0.10ppm brassinolide BR solution, the other seeds being the same as control 1;
Experiment group 4: soaking peanut seeds in 0.15ppm brassinolide BR solution, and the rest is the same as in experiment group 1;
control group 4: soaking peanut seeds in 0.15ppm brassinolide BR solution, the other seeds being the same as control 1;
experimental group 5: soaking peanut seeds in 0.20ppm brassinolide BR solution, and the rest is the same as in experiment group 1;
Control group 5: soaking peanut seeds in 0.20ppm brassinolide BR solution, the other seeds being the same as control 1;
experiment group 6: soaking peanut seeds in water for 8 hours, sowing, and carrying out drought stress (the relative water content of soil=40%) for 14 days in a flowering period (32 days after sowing); normal watering (soil relative water content=75%);
Control group 6: soaking peanut seeds in water for 8 hours, sowing, and normally watering (the relative water content of soil is 75 percent);
experiment group 7: soaking peanut seeds in 0.05ppm brassinolide BR solution, the other steps being the same as in experimental group 6;
Control group 7: soaking peanut seeds in 0.05ppm brassinolide BR solution, the other seeds being the same as control group 6;
experiment group 8: soaking peanut seeds in 0.10ppm brassinolide BR solution, the other steps being the same as in experimental group 6;
Control group 8: soaking peanut seeds in 0.10ppm brassinolide BR solution, the other seeds being the same as control 6;
experiment group 9: soaking peanut seeds in 0.15ppm brassinolide BR solution, the other steps being the same as in experimental group 6;
control group 9: soaking peanut seeds in 0.15ppm brassinolide BR solution, the other seeds being the same as control 6;
Experimental group 10: soaking peanut seeds in 0.20ppm brassinolide BR solution, the other steps being the same as in experimental group 6;
control group 10: soaking peanut seeds in 0.20ppm brassinolide BR solution, the other seeds being the same as control 6;
drought stress includes two periods of 7 days and 14 days, wherein the drought stress for experimental groups 1-5 is 7 days and the drought stress for experimental groups 6-10 is 14 days.
After drought stress is over, the plant height of peanut plants is measured and the relative plant height rate is calculated, and the results are shown in fig. 1.
It can be seen that the relative plant height rate of all experimental/control groups was less than 1, indicating that drought stress inhibited the plant height of peanut plants. After BR initiation, the relative plant height rates were increased for both control/control 1 or 6 and experimental/experimental 1 or 6.
Further comparison also shows that the relative plant height rate of the experimental group/the experimental group 1 or 6 is obviously higher than that of the control group/the control group 1 or 6, which indicates that the BR initiation effect is better under drought conditions. And, the relative plant height rates under 7 and 14 days of drought stress were highest for experimental group 4/experimental group 1 and experimental group 9/experimental group 4, respectively.
It can be seen that BR concentrations (0.15 ppm) of experimental group 4 and experimental group 9 triggers significantly reduced the effect of drought stress on peanut growth.
Example 2
Physiological and biochemical changes in BR-induced photosynthesis
The test group is the same as in example 1.
After 7 days or 14 days of drought stress, chlorophyll content, photosynthetic rate (Pn) of the plants were measured, and the results are shown in table 1.
It can be seen that there was no significant change in chlorophyll content in the treatment of experimental group 1 and control group 1, and experimental group 6 and control group 6. However, the chlorophyll content of peanut leaves of each of the experimental groups 3 and 4 (0.10 ppm, 0.15ppm BR) was significantly increased by 3.2% as compared with the control groups 3 and 4.
The photosynthetic rate was significantly reduced under treatment of experimental group 1 and control group 1. The photosynthetic rates of experimental groups 2 and 4 were increased compared to experimental group 1; the photosynthetic rate of experimental groups 8 and 9 was increased compared to experimental group 6.
In summary, BR-initiated treatments may reduce the effects of drought on photosynthesis.
TABLE 1 physiological changes associated with photosynthesis induced by different concentrations of BR
Note that: letters represent significant differences (p < 0.05) for the different treatments; * Representing a significant difference between the control group and the experimental group.
Example 3
BR-initiated effect on peanut yield and quality
To verify the effect of test group 4 and test group 9 on peanut yield and quality, four groups of test groups were set, as in control group 1, test group 1, control group 4, test group 4, control group 6, test group 6, control group 9, test group 9 in example 1.
After drought stress for 7 days or 14 days, normal watering (the relative water content of the soil is kept at 75%) until peanuts are ripe and harvested, detecting the number of single plant results, the weight of the hundred fruits and the weight of the hundred kernels, and calculating the kernel rate (the ratio of the weight of the peanut kernels to the weight of the corresponding peanut pods).
The results are shown in FIG. 2, and the number of single plants, the weight of the hundred fruits, the weight of the hundred kernels and the kernel yield of the control group 4/9 are obviously increased by 51%, 13%, 27% and 8% respectively (p < 0.05) compared with the control group 1/6.
Compared with the experimental group 1, the single plant result number, the hundred fruit weight, the hundred kernel weight and the kernel yield of the experimental group 4 are obviously increased by 53%, 44%, 54% and 4%, respectively (p < 0.05).
Compared with experimental group 6, the number of single plant results, the weight of the hundred fruits, the weight of the hundred kernels and the kernel yield of the experimental group 9 are obviously increased by 26%, 7%, 12% and 3%, respectively (p < 0.05).
However, the yield increase was greater in the 0.15ppm BR-induced run group 4 under 7 day dryland conditions than in the 14 day dryland run group 9.
As shown in table 2, although experimental groups 4 and 9 affected protein and lipid levels compared to control groups 4/9, there was no significant change in protein and lipid levels for experimental groups 4 and 9 compared to experimental groups 1 and 6, indicating that treatment of experimental groups 4 and 9 improved peanut yield under drought stress without affecting peanut quality.
TABLE 2 influence of BR initiation on peanut kernel quality
Note that: the lower case letters represent significant differences (P < 0.05) between control group 1/6, experimental group 1, experimental group 6, or between control group 4/9, experimental group 4, experimental group 9.
The above examples are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above examples, and any other changes, modifications, substitutions, combinations, and simplifications that do not depart from the spirit and principle of the present invention should be made in the equivalent manner, and the embodiments are included in the protection scope of the present invention.
Claims (2)
1. A method for improving peanut yield under drought conditions is characterized by comprising the following steps: soaking peanut seeds in a brassinolide solution with the concentration of 0.15ppm for at least 8 hours, and then sowing; after sowing, the peanuts grow to a flowering period, drought stress is carried out for 7 days, and normal watering is carried out in other periods;
The variety of the peanut is flower cultivation 39;
the drought stress refers to the relative water content in the planting soil is less than or equal to 40 percent.
2. The method according to claim 1, characterized in that: the normal watering means that the relative water content in the planting soil is more than or equal to 75 percent.
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| CN113057079A (en) * | 2021-03-12 | 2021-07-02 | 西南大学 | Method for improving waterlogging tolerance of sweet sorghum in seedling stage |
| CN116369323B (en) * | 2023-03-30 | 2024-06-28 | 中国热带农业科学院橡胶研究所 | Rubber discharging protective agent for rubber tree and application thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130244879A1 (en) * | 2003-04-22 | 2013-09-19 | Novozymes Biologicals Holding A/S | Use of lipo-chitooligosaccharides to initiate early flowering and fruit development in plants and related methods and compositions |
| CN104255752A (en) * | 2014-09-26 | 2015-01-07 | 山东省花生研究所 | Peanut seed coating additive |
| CN107304147A (en) * | 2016-04-25 | 2017-10-31 | 伍玉兰 | One cultivates peanut cold-resisting production-increasing agent |
| CN107736215A (en) * | 2017-10-05 | 2018-02-27 | 蓝本祥 | A kind of implantation methods for improving the full shell of peanut fruit |
| CN108739158A (en) * | 2018-04-26 | 2018-11-06 | 中国水稻研究所 | Application and application process of the brassinosteroid in alleviating rice florescence High Temperature Stress |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130244879A1 (en) * | 2003-04-22 | 2013-09-19 | Novozymes Biologicals Holding A/S | Use of lipo-chitooligosaccharides to initiate early flowering and fruit development in plants and related methods and compositions |
| CN104255752A (en) * | 2014-09-26 | 2015-01-07 | 山东省花生研究所 | Peanut seed coating additive |
| CN107304147A (en) * | 2016-04-25 | 2017-10-31 | 伍玉兰 | One cultivates peanut cold-resisting production-increasing agent |
| CN107736215A (en) * | 2017-10-05 | 2018-02-27 | 蓝本祥 | A kind of implantation methods for improving the full shell of peanut fruit |
| CN108739158A (en) * | 2018-04-26 | 2018-11-06 | 中国水稻研究所 | Application and application process of the brassinosteroid in alleviating rice florescence High Temperature Stress |
Non-Patent Citations (3)
| Title |
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