CN104472347A - Strong-ratoon sugarcane hybrid line screening method - Google Patents
Strong-ratoon sugarcane hybrid line screening method Download PDFInfo
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- CN104472347A CN104472347A CN201410619085.1A CN201410619085A CN104472347A CN 104472347 A CN104472347 A CN 104472347A CN 201410619085 A CN201410619085 A CN 201410619085A CN 104472347 A CN104472347 A CN 104472347A
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Abstract
The invention discloses a strong-ratoon sugarcane hybrid line screening method, and belongs to the field of screening of strong-ratoon sugarcane hybrid lines. The strong-ratoon sugarcane hybrid line screening method comprises: planting a sugarcane seedling, when the seedling grows to 60-80 cm and has 2-4 stem nodes, artificially cutting off sugarcane to enable sugarcane stubble to be flush with the ground, investigating sugarcane strain height, brix, effective stem, stem diameter and other properties at a later period, and screening to obtain a strong-ratoon sugarcane hybrid line. The method changes a conventional manner of investigating annual sugarcane hybridization seedlings and the continuing to screen, reduces the time for reserving ratoon for another year for screening, is capable of simultaneously screening out the strong-ratoon strong-growth-situation sugarcane line and avoiding discarding of the strong-ratoon sugarcane line, helps to save time and save land and cost, and has important economic and scientific research value.
Description
Technical field
The invention belongs to the screening of strong ratoon sugarcane crosses field, particularly one strong ratoon sugarcane crosses screening technique.
Background technology
Sugarcane is as important sugar material and bio-energy crop in China, and root of staying overnight can be saved seedling, saves labour, do sth. in advance the ripe phase, and is conducive to accelerating improved variety popularization speed, reduces the cyclic process of plantation, extends manufacture cycle.Under identical management condition, quality and the sugared rate of recovery of same sugar cane breed stubble cane are all high than new plant cane, and therefore, the seed selection of strong ratoon sugarcane kind occupies extremely important status aborning, by man of main sucrose producing country is paid attention to.China's stubble cane accounts for about 60% of the total sowing area of sugarcane, but sugarcane yield extended stationary periods is at reduced levels, and main cause lacks the good kind of perennial root.In China's sugar cane breed selection cross program, the selection of First Year hybrid nursery is not generally stayed overnight root, so First Year is not understood selected sugarcane line perennial root power, if it is strong and weak to observe Leifsonia, 1 year perennial root will be stayed to observe, the breeding time limit that therefore can shorten strong perennial root the more time can be spent, if will be saved manpower greatly and bring very large economic benefit.
Strong ratoon sugarcane crosses screening of the prior art, to be stayed overnight root by the selection of First Year hybrid nursery, carries out observations and screen, at least need the cost time of 2 years by Second Year to ratoon sugarcane; By overcoming the technology prejudice of this area in the present invention, passing through manually to cut seedling process to the seedling grown into a certain degree at the First Year of crosses screening, saving the time of the cross hybrid seedling seed selection of a year, there is significant advantage.Simultaneously, the opportunity of manually cutting seedling (grows into 60-80cm at cane seedlings, when the stipes number of sugarcane has 2 ~ 4 to save, cut sugarcane) be through inventor and conscientiously screen acquisition, not only do not affect the growth of cutting rear sugarcane but also can farthest save time, manually cutting seedling too early or spend evening and all can not reach this effect.
The present invention has following advantage and effect relative to prior art:
The present invention changes and traditional annual sugarcane cross hybrid seedling is investigated to the mode continuing again to screen, decrease the time staying 1 year perennial root to carry out screening again, strong perennial root, sugarcane line that growing situation is strong can be filtered out simultaneously, avoid the sugarcane line that superseded perennial root is strong, save the time, also save soil and cost, there is Important Economic and scientific research value.
Summary of the invention
The object of the invention is to overcome the shortcoming that exists in prior art with not enough, a kind of strong ratoon sugarcane crosses screening technique is provided.Screening technique of the present invention accelerates the formation of root of staying overnight, for arriving the strong ratoon sugarcane crosses of screening.
The present invention is achieved through the following technical solutions: a kind of strong ratoon sugarcane crosses screening technique, specifically comprises the following steps:
1) same cross hybrid seedling is carried out the kind of single seedling dense planting together, seedling spacing, between 12 ~ 15cm, is spaced from each other 25 ~ 35cm between different cross hybrid seedling;
2) grow into 60 ~ 80cm at cane seedlings, when the stipes number of sugarcane has 2 ~ 4 to save, manually cut seedling, make the sugarcane root and stem of certain plants equal with ground, allow its continued growth;
3), after 6 ~ July of interval, by screening sugarcane plant height, brix, productive tiller and stem footpath proterties, strong ratoon sugarcane crosses is obtained.
Step 1) described in single seedling dense planting be preferably when planting seedling, cover sugarcane shoot root portion completely with soil, pouring normal root water.
Step 2) described in cane seedlings grow into 60 ~ 80cm be preferably at cane seedlings more than 90% plant strain growth to 60 ~ 80cm.
Step 3) described in the screening index of screening sugarcane plant height, brix, productive tiller and stem footpath proterties be preferably plant height and be not less than 120cm, brix is not less than 20%, and number of productive tiller is not less than 4/clump, and the clump system that stem footpath is not less than 2.3cm is selected in.
Step 3) described in the proterties of screening also comprise without sugarcane hair and disleave good.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited thereto.
Embodiment 1
A plot is looked in field experiment ground, mu executes how much fertilizer, several community is divided into according to the quantity of hybrid combination seedling, trench digging interval, minizone 30cm, will not of the same racely separate, by the cross hybrid seedling cultivated, divide and plant at different blocks, same cross hybrid seedling is carried out the kind of single seedling dense planting together, is separated by between Miao Yumiao between 12 ~ 15cm, anyhow keep neatly parallel between seedling, when planting seedling, unification soil covers sugarcane shoot root portion completely, timely pouring normal root water, the timely weeding of growing period, at cane seedlings more than 90% plant strain growth to 60 ~ 80cm, when the stipes number of sugarcane has 2 ~ 4, implement manually to cut seedling with scissors, make the sugarcane root and stem of certain plants equal with ground, allow its continued growth, timely weeding with topdress, until after 6 ~ July sugarcane reach technical maturity, unified investigation sugarcane plant height, brix, clump productive tiller, stem footpath major traits, to without hair, disleave is good, plant height is not less than 120cm, brix is not less than 20%, number of productive tiller is not less than 4/clump, the clump system that stem footpath is not less than 2.3cm carries out being selected in (limit, community row material is not selected in), obtain strong ratoon sugarcane crosses.
The present embodiment 1 traditional investigates the mode continuing again to screen by changing to annual sugarcane cross hybrid seedling, decrease the time staying 1 year perennial root to carry out screening again, strong perennial root, sugarcane line that growing situation is strong can be filtered out simultaneously, avoid the sugarcane line that superseded perennial root is strong, save the time, also save soil and cost, there is Important Economic and scientific research value.
Above-described embodiment is the present invention's preferably embodiment; but embodiments of the present invention are not restricted to the described embodiments; change, the modification done under other any does not deviate from Spirit Essence of the present invention and principle, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (4)
1. a strong ratoon sugarcane crosses screening technique, is characterized in that: specifically comprise the following steps:
1) same cross hybrid seedling is carried out the kind of single seedling dense planting together, seedling spacing, between 12 ~ 15cm, is spaced from each other 25 ~ 35cm between different cross hybrid seedling;
2) grow into 60 ~ 80cm at cane seedlings, when the stipes number of sugarcane has 2 ~ 4 to save, manually cut seedling, make the sugarcane root and stem of certain plants equal with ground, allow its continued growth;
3), after 6 ~ July of interval, by screening sugarcane plant height, brix, productive tiller and stem footpath proterties, strong ratoon sugarcane crosses is obtained.
2. strong ratoon sugarcane crosses screening technique according to claim 1, is characterized in that: step 1) described in single seedling dense planting for when planting seedling, cover sugarcane shoot root portion completely with soil, pouring normal root water.
3. strong ratoon sugarcane crosses screening technique according to claim 1, it is characterized in that: step 3) described in the screening index of screening sugarcane plant height, brix, productive tiller and stem footpath proterties be that plant height is not less than 120cm, brix is not less than 20%, number of productive tiller is not less than 4/clump, and the clump system that stem footpath is not less than 2.3cm is selected in.
4. strong ratoon sugarcane crosses screening technique according to claim 1, is characterized in that: step 3) described in the proterties of screening also comprise without sugarcane hair and disleave good.
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| CN201410619085.1A CN104472347B (en) | 2014-11-06 | 2014-11-06 | A kind of strong ratoon sugarcane crosses screening technique |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111387053A (en) * | 2020-05-12 | 2020-07-10 | 广西壮族自治区农业科学院 | Breeding method of machine-harvesting-resistant rolling sugarcane variety |
| CN114402937A (en) * | 2022-01-26 | 2022-04-29 | 广西壮族自治区农业科学院 | Breeding method of strong perennial root sugarcane variety |
| CN114600770A (en) * | 2022-04-25 | 2022-06-10 | 云南省农业科学院甘蔗研究所 | Breeding method for obtaining high-brix and ultrahigh-sugar sugarcane germplasm by utilizing compact planting of hybrid nursery |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102282992A (en) * | 2011-06-25 | 2011-12-21 | 云南省农业科学院甘蔗研究所 | Method for testing biennial root property before field transplanting of sugarcane seedlings |
| CN102415249A (en) * | 2011-08-15 | 2012-04-18 | 云南省农业科学院甘蔗研究所 | Method for quickly evaluating genetic effect of sugarcane parent on ratoon character |
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2014
- 2014-11-06 CN CN201410619085.1A patent/CN104472347B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102282992A (en) * | 2011-06-25 | 2011-12-21 | 云南省农业科学院甘蔗研究所 | Method for testing biennial root property before field transplanting of sugarcane seedlings |
| CN102415249A (en) * | 2011-08-15 | 2012-04-18 | 云南省农业科学院甘蔗研究所 | Method for quickly evaluating genetic effect of sugarcane parent on ratoon character |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111387053A (en) * | 2020-05-12 | 2020-07-10 | 广西壮族自治区农业科学院 | Breeding method of machine-harvesting-resistant rolling sugarcane variety |
| CN111387053B (en) * | 2020-05-12 | 2021-10-29 | 广西壮族自治区农业科学院 | Breeding method of machine-harvesting-resistant rolling sugarcane variety |
| CN114402937A (en) * | 2022-01-26 | 2022-04-29 | 广西壮族自治区农业科学院 | Breeding method of strong perennial root sugarcane variety |
| CN114600770A (en) * | 2022-04-25 | 2022-06-10 | 云南省农业科学院甘蔗研究所 | Breeding method for obtaining high-brix and ultrahigh-sugar sugarcane germplasm by utilizing compact planting of hybrid nursery |
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