JP2002119139A - Method for increasing assimilatory amount of carbon dioxide of seed plant - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for increasing the assimilatory amount of carbon dioxide of a seed plant. SOLUTION: The assimilatory amount of carbon dioxide of a seed plant is increased by treating the seed plant with an azole-based compound expressed by formula (I) shown below to enlarge the storage organ.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a method for increasing the amount of carbon dioxide assimilated in a seed plant.

[0002]

2. Description of the Related Art It is known that seeds, fruits, bulbs, tubers, roots and other organs of a seed plant characteristically enlarge during the growth process depending on the plant species or crop varieties, and become so-called sink organs. Recent studies have revealed that enlargement of sink organs enhances the ability of seed plants to assimilate carbon dioxide through photosynthesis. A report by Usuda et al. Shows that when varieties of radish are compared, varieties with more enlarged roots, which are sink organs, can assimilate higher concentrations of carbon dioxide (H. Usuda et.
Plant Cell Physiol. 39
(1): 1-7 (1998); Usuda e
t. al. , Plant Cell Physio
l. 40 (12): 1210-1218 (199
9)).

[0003] On the other hand, since the sink organ may become an edible part for animals including human beings, in the agricultural field,
For the purpose of increasing the yield and improving the quality of crops, attempts have been made to further enlarge the crops by breeding, genetic modification, application of fertilizers, etc., and various techniques are known (for example, JP-A-8-56491). JP-A-8-2896
No. 65, etc.).

[0004]

By the way, the emission of carbon dioxide increases with the increase of human activities in industry.
It causes serious problems such as global warming.
Therefore, there are attempts to increase the amount of carbon dioxide assimilation by using the above-mentioned technologies. However, these technologies are not necessarily suitable technologies when the purpose is to assimilate carbon dioxide in a wide area or plant species. It cannot be said that. For example,
Breeding requires years for breeding, and widespread use of genetically modified organisms in natural vegetation, etc., may have permanent effects on ecosystems. In addition, application of fertilizers such as phosphoric acid and potash often requires a plurality of treatments, and there is a concern that they may affect soil ecology and the like.

[0005] Accordingly, an object of the present invention is to provide a technique for increasing the assimilation ability of seed plants in carbon dioxide in a wider range of use and further enlarging the sink organ.

[0006]

Under the circumstances described above, the present inventors have conducted intensive studies and have found that certain species known to be usable as fungicides in a wide variety of crops and regions are available. Treatment of a seed plant with the azole compound of the present invention found that the sink organ of the seed plant was further enlarged, and that the amount of carbon dioxide assimilation was increased from the increase in its dry weight, leading to the completion of the present invention. Was.

That is, the method for increasing the amount of carbon dioxide assimilated in a seed plant according to the present invention comprises treating a seed plant with at least one of the azole compounds represented by the following formulas (I) to (XI) to obtain a sink organ. Is characterized by being enlarged.

Embedded image

[0008]

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[0009]

Embodiments of the present invention will be described below in more detail. Plants targeted by the present invention,
A seed plant having seeds, fruits, bulbs, tubers, roots and the like as sink organs. Specifically, radish, wheat,
Garlic, potato, peanuts, mango, avocado, tulip and the like.

In the present invention, the azole compound which is effective as an active ingredient of the carbon dioxide assimilation amount increasing agent for seed plants is 5-[(4-chlorophenyl) methyl] -2, represented by the above formula (I). 2-dimethyl-1- (1H-1,
2,4-triazol-1-ylmethyl) cyclopentanol (generic name: metconazole), formula (II)
(±) -α- [2- (4-chlorophenyl)
Ethyl] -α- (1,1-dimethylethyl) -1H-
1,2,4-triazole-1-ethanol (generic name:
tebuconazole), 2 represented by the formula (III)
-[(4-chlorophenyl) methyl] -5- (1-methylethyl) -1- (1H-1,2,4-triazole-
1-ylmethyl) cyclopentanol (generic name: ipc
onazole), cis-1- represented by the formula (IV)
[[3- (2-chlorophenyl) -2- (4-fluorophenyl) oxiran-2-yl] methyl] -1H-
1,2,4-triazole (generic name: epoxicon
azole), α- (4-chlorophenyl) -α- (1-cyclopropylethyl) -1H- represented by the formula (V)
1,2,4-triazole-1-ethanol (generic name:
Cyproconazole), 1 represented by the formula (VI)
-[[2- (2,4-Dichlorophenyl) -4-propyl-1,3-dioxolan-2-yl] methyl] -1H
-1,2,4-triazole (generic name: propico
nazole), 1-[[bis (4-fluorophenyl) methylsilyl] methyl] -1 represented by the formula (VII)
H-1,2,4-triazole (generic name: flusil
azole), β- (4-chlorophenoxy) -α- (1,1-dimethylethyl) -1H represented by the formula (VIII)
-1,2,4-triazole-1-ethanol (generic name: tridimenol), α represented by the formula (IX)
-Butyl-α- (4-chlorophenyl) -1H-1,
2,4-triazole-1-propanenitrile (generic name: myclobutanil), 1- [2- [4- (4-chlorophenoxy) -2-chlorophenyl] -4-methyl-1 represented by the formula (X) , 3-Dioxolan-2
-Ylmethyl] -1H-1,2,4-triazole (generic name: difenoconazole) and formula (XI)
(±) -α-butyl-α- (2,4-dichlorophenyl) -1H-1,2,4-triazole-1-
Ethanol (generic name: hexaconazole) may be used in combination of two or more. In the present invention, an azole compound represented by the formula (I) is particularly preferably used.

The above-mentioned azole compound in the present invention is usually prepared by using a liquid carrier, a solid carrier, a surfactant and other auxiliaries for the preparation of an emulsion, a liquid, a wettable powder, a suspending agent,
It is used after being formulated into granules and the like. Usually these formulations are
The azole compound as an active ingredient is 0.0000 in weight ratio.
It is contained so as to be in the range of 1 to 99.9%. Also,
Any liquid and solid carriers, surfactants and the like can be used for the preparation, and for example, known ones used for agricultural chemical preparations can be used.

In the present invention, the preparation containing the above-mentioned azole compound as an active ingredient can be used in the form of a powder, but usually the active ingredient is contained in an amount of about 0.01 to about 10,000.
It is used after being diluted with water to a concentration of mg / l.

Examples of the method of treating seed plants with the above-mentioned preparations include dressing, smearing, dipping, irrigation, and spraying, and foliage spraying by spraying or the like is preferred. The foliage spraying treatment may be performed during the growing period of the sink organ of the seed plant, or may be performed prior to the growing period of the sink organ. The above formulation, for seed plants,
It may be applied so that the amount of the active ingredient is about 0.1 to about 10,000 g / ha.

[0014]

EXAMPLES The present invention will be described with reference to the following test examples, but the present invention is not limited thereto. Test Example 1 (Example of preparing emulsion) Azole compound represented by formula (I) or (II) 10 g Polyoxyethylene alkyl allyl ether 10 g Polyoxyethylene sorbitan monolaurate 3 g Xylene 77 g In a greenhouse, radish (cultivar, Is grown until the 6-leaf stage, and the above-mentioned formula (I) prepared in the above-mentioned emulsion is obtained.
An azole compound represented by the following formula (hereinafter referred to as compound (I)) or an azole compound represented by the formula (II) (hereinafter referred to as compound (II)) is diluted with water, and foliage of radish is obtained. Parts were sprayed with a sprayer so that the doses shown in Table 1 were obtained. Forty-three days after the treatment, the weight of the root of the radish and the dry weight of the treated section and the non-treated section (each one planted in one section, triplicate) were examined. Table 1 shows the results. As is clear from Table 1, compound (I) or (II)
The roots of the radish were larger in the treated plots than in the non-treated plots. Further, it was confirmed that the dry weight of radish increased in the treated section according to the present invention as compared with the untreated section, and the assimilation amount of carbon dioxide by photosynthesis increased. No disease occurred in the untreated and treated plots.

[0015]

[Table 1]

Test Example 2 Wheat was cultivated in a field, and the compound (I) or the compound (II) prepared in the above emulsion was diluted with water, and 200 l / ha was applied from the growing season to the ripening period of the wheat.
/ Ha was sprayed on the foliage with a sprayer so as to have the dosage shown in Table 2. 89 days after the treatment, the treatment section and the non-treatment section in the harvest season (both are in one section 40
The weight of 1,000 dried seeds (m ² , 5 reams) was investigated. Table 2 shows the results. As is clear from Table 2, the treated group of the present invention has an increased dry weight per grain of wheat seeds as compared with the untreated group, thereby increasing the amount of carbon dioxide assimilated by photosynthesis. It was confirmed that.

[0017]

[Table 2]

[0018]

Industrial Applicability According to the present invention, the use of the above specific azole compound further enlarges the sink organ of a seed plant in a wide range of use, enhances the assimilation ability of carbon dioxide, and increases the amount of assimilation. This has the effect.

Claims (4)

[Claims] 1. The method of treating a seed plant with at least one of the azole compounds represented by the following formulas (I) to (XI) to enlarge a sink organ, and How to increase. Embedded image Embedded image 2. The method according to claim 1, wherein the azole compound represented by the formula (I) causes the sink organ of the seed plant to grow at an enlarged time.
Alternatively, a method for increasing carbon dioxide assimilation of a seed plant, comprising performing a foliage treatment prior to that to further enlarge a sink organ. 3. The amount of carbon dioxide assimilated in radish, wherein the root of the radish is further subjected to foliar treatment with the azole compound represented by the formula (I) during or before the root growing time when the root of the radish is enlarged. How to increase. 4. Wheat seed carbon dioxide assimilation, wherein the wheat seed is subjected to foliage treatment at or before the growing time when the wheat seed is enlarged with the azole compound represented by the formula (I) to further increase the seed. How to increase the volume.