JP2795823B2 - Cane seedling production method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing sugar cane seedlings by inducing a large number of buds from side buds of sugar cane (sugar cane) and separating the shoots into seedlings.

[0002]

2. Description of the Related Art In cultivation of sugar cane, there are a method of newly planting every one to two years and a method of germinating a stump after cutting a stalk of a sugar cane (hereinafter referred to as "stalk"). . The stocking method is a method in which germination, growth and cutting are repeated over a long period of time from several years to more than 10 years, but as cutting is repeated, the production amount decreases year by year due to aging of stalks and damage of pests. Go.

[0003] Sucrose has side buds at its knots, and a new sugarcane plant is a stalk (two-knot seedling) which is usually cut from a grown stalk with two nodes remaining.

[0004]

As described above, two-node seedlings have been used in planting sugar cane. However, preparation of the two-node seedlings is labor intensive, and the buds of the two-node seedlings are in an ungerminated state. And often fall off or be damaged when planted in a field.
In addition, there are many immature buds and aging seedlings, and ungerminated and withered many cases due to unseasonable weather such as drought and heavy rain.
It is about 0 to 60%.

[0005] In addition, two-node seedlings are usually obtained from the fifth or lower leaf of the open end of a stalk, and about 5 to 6 (the number of buds is about 10 to 12) stalks per stalk. Although it can be produced, it is a harvest of stalks themselves, and when used for seedlings, the yield is reduced.
An object of the present invention is to solve such a problem relating to a method for producing sugar cane seedlings, and specifically to provide means for easily and mass-producing sugar cane seedlings.

[0006]

Means for Solving the Problems The present inventor paid attention to the fact that when the top of a stalk is resected, a sprouting phenomenon in which lateral buds germinate occurs. The present inventors have found that a large number of shoots that can be used as seedlings can be obtained by causing a germination phenomenon in a specific manner, and completed the present invention.

That is, the present invention is to repeat the following operations (1) to (4) at least once or more: (1) germinating buds from side buds of sugar cane; (2) growing germinated sprouts; (3) ) Cutting off the top of the growing shoots; (4) germinating new shoots from the side shoots of the cut shoots; forming a large number of shoots in sugar cane and separating the shoots into seedlings This is a method of producing cane seedlings.

Hereinafter, the present invention will be described in detail. The production of the sugar cane seedling of the present invention can be performed as follows. First, the canopy head of a sugar cane is cut off. When to disconnect,
After the tip of the stalk has opened and the sugar cane has grown sufficiently,
Usually 6-7 months after germination. The cleavage site is
Although it varies depending on the cultivar and growth condition of the sugar cane, it is usually preferable to cut the 11th to 12th nodes from the above-ground part. 5 from cutting
The primary side buds germinate from the side buds of the mother stem in 7 days.

[0009] The germinated primary buds are grown until they have about 6 to 8 leaves, and their heads are cut off. It is preferable that the cleavage site cuts 11 to 12 nodes from the germination base. 5 to 7 days after the cutting, secondary buds germinate from the side buds of the primary buds. FIG. 1 and FIG. 2 show the appearance of the cane at the stage when the secondary buds have germinated. Fig. 1 shows the germination of secondary buds.
FIG. 2 shows the results after the germination of secondary buds.
Five days later.

Although the secondary buds can be used as seedlings, the primary and secondary buds usually germinate about 5 and 6, respectively, so that only about 30 seedlings are obtained at this time. Can not do. Therefore, it is preferable to cut off the shoot head and germinate the secondary buds as in the case of the primary buds. Also, the same treatment can be applied to the tertiary sprouts obtained from the secondary sprouts and the quaternary sprouts obtained from the tertiary sprouts to further increase the number of seedlings obtained. The above operation is repeated to form a sufficient number of shoots, and when grown to a certain size, the shoots are separated,
Seedlings.

[0011] In addition, since there is a growing tissue at the joint of the stalk, the lateral bud may be treated with a plant hormone before or immediately after the excision of the head, so that a large amount of buds can be induced from the lateral bud. it can. The resulting seedlings
After planting in a paper pot or potted seedling base filled with cultivation soil and rooting, it is planted in a field.

[0012]

EXAMPLE Two seedlings of sugar cane (variety: F161) were cultivated between the plants.
cm and a ridge width of 140 cm were planted in the field. As the fertilizer, compost was used as the original compost, and BB500 (manufactured by Ryukyu fertilizer) was used as the top fertilizer. However, no topdressing was given until the stalks were split. The control of the pests was carried out by spraying a tocthione emulsion (manufactured by Nippon Bayer Agrochem Co., Ltd.) at intervals of 10 days. Seven months after planting, the plant height reached 300 cm. At this point, the top of the stalk was cut off above the 12th node from the aerial part. The excision site was sterilized and disinfected with a 500-fold solution of Benrate (manufactured by DuPont, USA). 5 from resection
After 5 days, five primary shoots germinated from the side shoots. After the primary buds had grown to about eight developed leaves, the upper part of the top of the eleven node buds was cut off from the germination base. The resection site is Benlate 50
It was sterilized and disinfected with a 0-fold solution. Seven days after excision, six secondary buds germinated from the primary buds. After the secondary sprouts grew to about 6 developed leaves, the top of the head at 10 nodes from the germination base was excised. The resected site was sterilized and disinfected as described above. Seven days after excision, four tertiary buds germinated from the side buds of the secondary buds. After the tertiary buds grew to about 6 developed leaves, the top of the sixth node was cut off from the germination base. The resected site was sterilized and disinfected as described above. Seven days after excision, two quaternary buds germinated from the side buds of the tertiary buds. Fourth buds were grown, and when there were 2 to 5 leaves, the fourth buds were excised and separated from the mother stem without damaging other buds. The separated shoots were immediately immersed in water, and then selected according to the number of leaves and the thickness of the stem to obtain a base plant.
5 × 6 × 4 × 2 = 240 base seedlings could be collected from one sugar cane. The base seedlings were disinfected by immersing them in a 500-fold solution of Benrate for a day.

The base seedling thus obtained is cut into half leaves, and then a paper pot (2.3 cm wide, 2.3 cm wide) filled with cultivated soil (sugar-making cake: soil = 2: 1 mixture).
It was planted so as to have an insertion depth of 2-3 cm at a length of 2.3 cm and a depth of 7.5 cm. The watering of the seedlings was sufficiently watered on the day of planting, but only to moisten the leaves for 2 to 10 days after planting, and was not watered after 11 days. After raising the seedlings for 3 weeks, they were planted in the field. At that time, the leaves were cut in advance and the height of the seedlings was adjusted before planting. The growth rate of the planted seedlings was 100%.

The production and use of this sugar cane seedling have the following effects. i. The efficiency of collecting seedlings from sugar cane is 10 to 20 times or more that of the conventional ii. Rooting and raising seedlings can be planted in the field, the growth rate is almost 100%, and the yield of sugarcane is greatly increased. Iii. Cultivation-harvesting work is easy, and the efficiency of machine harvesting is improved. V. Shorter cultivation period in field. Vi. Plants that can be planted out of pest attack time. Vii can be planted out of rainy and drought seasons. It can be planted by machine, which can save labor.

[0015]

Industrial Applicability The present invention enables easy and large-scale production of cane seedlings, and is extremely useful in industry.

[Brief description of the drawings]

FIG. 1 is a photograph showing the morphology of a living sugar cane.

FIG. 2 is a photograph showing a morphology of a living sugar cane.

──────────────────────────────────────────────────続 き Continuation of front page (58) Field surveyed (Int. Cl. ⁶ , DB name) A01G 1/00 JICST file (JOIS)

Claims (1)

(57) [Claims] The present invention provides a sugar cane seedling characterized by repeating the following operations (1) to (4) at least once or more to form a large number of shoots on a sugar cane, and separating the shoots into a seedling. Production method: (1) germinating buds from side buds of sugar cane; (2) growing germinated buds; (3) removing the head of growing buds; Germinate.