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Rice regeneration capacity identifying method

An identification method and regenerative technology, applied in horticultural methods, rice cultivation, botanical equipment and methods, etc., can solve the problems of lack of common characteristics, lack of regenerative identification methods, increased difficulty in breeding rice varieties with strong regenerative ability, etc. achieve comparable results

Active Publication Date: 2020-04-24
福建省农业科学院水稻研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The regenerative ability of rice is affected by many factors such as genetics, environment, cultivation measures, etc. Raising rice varieties not only require high yield of the first season rice, but also meet the requirements of high yield in the regenerative season, which increases the difficulty of breeding rice varieties with strong regenerative ability , the breeding methods of rice varieties with strong regenerative ability are still being perfected, and there is a lack of simple and effective identification methods for regenerative ability
[0004] At present, the identification methods / indices of regenerative ability include stem thickness of the first crop rice, dry weight of the stem and sheath, total combining ability (Tca), root activity from the maturity stage of the first crop to the full heading stage of the regeneration season, and the fifth day after harvest of the first crop rice. The sheathing rate of regenerated buds of the first season rice pile, the SPAD value decay index of the first season rice from full panicle to mature leaves, the ratio of negative nodes, etc. The shortcomings of these indicators or methods are that they are not intuitive enough, need to be measured by special instruments, and the workload is relatively large , the accuracy rate is low, and some of them use a certain trait of the variety directly as an identification index, which is affected by the difference in characteristics between varieties to a certain extent, and lacks common characteristics.

Method used

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  • Rice regeneration capacity identifying method
  • Rice regeneration capacity identifying method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] (1) Determination of test materials

[0040] Bingyou 6028 (V 1 ), Shenyou 957 (V 2 ), Huangyou 308 (V 3 ), Hengfeng You 777 (V 4 ), Jiafuzhan (V 5 ), Mengliangyou 319 (V 6 ), Jintaiyou 683 (V 7 ), Minyou 919 (V 8 ) 8 early rice varieties with similar growth stages were used as test materials.

[0041] (2) Relevant data collection

[0042] ①Collect the yield of each rice variety in the first season (Y 1 ), effective spike number (X 1 ), the number of grains per ear (X 2 ), seed setting rate (X 3 ), thousand-grain weight (X 4 )data;

[0043] ②Collect the regeneration season yield of each rice variety (Y 2 ), effective spike number (X 5 ), the number of grains per ear (X 6 ), seed setting rate (X 7 ), thousand-grain weight (X 8 ) data, and calculate the effective ear number ratio (X 9 , effective panicle number in the regeneration season / effective panicle number in the first season×100%).

[0044] (3) Data collection method

[0045] Yield: Real cut plo...

Embodiment 2

[0101] Embodiment 2 verification test

[0102] Using the regenerative power estimation model screened out in Example 1, Bingyou 6028, Shenyou 957, Huangyou 308, Hengfengyou 777, Jiafuzhan, Mengliangyou 319, Jintaiyou 683, Minyou 919, Taiyou The output of 202, Tianyou 202 and Hengfeng Youhuazhan was estimated, and their regenerative power was predicted. The specific results are shown in Table 9.

[0103] Table 9 prediction results

[0104]

[0105]

[0106] It can be seen from the results in Table 9 that the prediction accuracy of the regenerative force estimation model of the present invention is high.

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Abstract

The invention discloses a rice regeneration capacity identifying method. The rice regeneration capacity identifying method comprises the following steps: (1) collecting the number of productive ears of rice in the first season and the regeneration season; (2) calculating the ratio of the number of productive ears, wherein the ratio of the number of productive ears = the number of productive ears in the regeneration season / the number of productive ears in the first season * 100%; and (3) estimating the yield and identifying regeneration capacity of rice according to a regeneration capacity estimation model Y = 951.95 + 24.68 X, wherein X represents the ratio of the number of productive ears and Y represents the yield. The rice regeneration capacity identifying method has the beneficial effects as follows: according to the ratio of the number of productive ears, the requirement that the number of productive ears is moderate in the first season is met, the characteristic of the large number of productive ears in the regeneration season is considered, and the requirement of accurately identifying the regeneration capacity of varieties is met; the ratio of the number of productive earseliminates the effects of feature difference between varieties, has common features and is suitable to serve as a measurement index; and a process of instrument detection or mass manual seed inspection is omitted; and the correlation coefficient of the regeneration capacity estimation model and the regeneration season yield is up to 0.65<**>, and the average accuracy of the predicted yield reaches 90.04%.

Description

technical field [0001] The invention relates to the technical field of regenerative ability identification, in particular to a method for identifying rice regenerative ability. Background technique [0002] Ragnarok rice is a kind of rice that is harvested again by using the dormant axillary buds to germinate after the first season of rice is harvested, and then heading and maturing. Raising rice has the characteristics of short growth period, high rice quality, high daily output, saving labor, adjusting labor, saving material costs and high economic benefits. It can be widely used in single-season areas. In recent years, southern rice regions such as Sichuan, Hunan, Chongqing, Hubei, Yunnan, Jiangxi, Fujian, Guangxi, Anhui, Guizhou, and Zhejiang have formed a certain scale of planting ratooning rice. [0003] At present, most of the ratooning rice varieties used in the field are selected from the varieties that have been produced and promoted, and few ratooning rice varie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G22/22A01G7/06G06F17/18G06Q10/06G06Q50/02
CPCA01G7/06A01G22/22G06F17/18G06Q10/06393G06Q50/02
Inventor 林强张建福郑长林何炜朱永生谢鸿光蔡秋华
Owner 福建省农业科学院水稻研究所