A Method for Predicting Yield Stability of Hybrid Japonica Rice Combination

A technology for stability prediction and hybrid japonica rice, applied in botany equipment and methods, plant gene improvement, application, etc., to achieve good yield stability, excellent comprehensive agronomic traits, and accelerated high-yield effects

Active Publication Date: 2021-07-02
SHANGHAI ACAD OF AGRI SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the methods for predicting the yield stability of hybrid japonica rice combinations have not been reported yet.

Method used

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  • A Method for Predicting Yield Stability of Hybrid Japonica Rice Combination
  • A Method for Predicting Yield Stability of Hybrid Japonica Rice Combination
  • A Method for Predicting Yield Stability of Hybrid Japonica Rice Combination

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Experimental program
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Effect test

Embodiment 1

[0026] A prediction method and application of yield stability of a new combination of hybrid japonica rice:

[0027] In the winter of 2014, 24 hybrid combinations were prepared in Sanya, Hainan by using 6 newly selected japonica rice restorer lines and 4 BT-type japonica rice sterile lines according to the NCⅡ genetic mating design. The 6 restorer lines are: Shenfan 24, Shenhui 26, Shenhui 415, C67, Shenfan 17 and Shenfan 31. The 4 CMS lines are: Shenwu 1A, Shen 01A, Shen 9A and Zixiang A.

[0028] In 2015, 24 hybrid combinations prepared in Hainan in the winter of 2014 were planted at the Zhuanghang Comprehensive Experimental Station of the Shanghai Academy of Agricultural Sciences. They were sown on May 20 and transplanted on June 17. Planting 14 rows per plot, 17 plants per row, The row spacing is 13.3 cm×20.0 cm, and the plot area is 5.45 m 2 , a random block group with 3 repetitions. There are protective rows around, and the conventional japonica rice Ning 5047 is unifo...

Embodiment 2

[0037] In order to verify the accuracy of the method, in 2015, while carrying out the yield stability prediction test of the new combination of hybrid japonica rice, 7 hybrid combinations were selected and sent to 8 test points for multi-point identification (Table 3). The 7 hybrid combinations are: Shenwu 1A / Shenfan 24, Shen 9A / Shenhui 26, Shen 9A / Shenhui 415, Shen 9A / Shenfan 31, Shenwu 1A / Shenfan 17, Shen 9A / Shenfan 17 , Zixiang A / Shenfan 17. The 8 test sites are: Shanghai Pandian, Shanghai Yuejin, Shanghai Shangshi, Shanghai Zhuanghang, Shanghai Zhuqiao, Zhejiang Quzhou, Jiangsu Nanjing and Anhui Hefei. The high-yield and high-quality hybrid japonica rice combination Huayou 14 was used as the control. The yield stability of the new combination of hybrid japonica rice was measured by the coefficient of variation of yield in multi-point identification. The smaller the coefficient of variation, the smaller the variation of the combination under different environmental conditi...

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Abstract

The invention relates to a method for predicting yield stability of hybrid japonica rice combinations. The method utilizes the selected japonica rice restorer line and the BT type japonica rice male sterile line to design and prepare a hybrid combination according to the incomplete diallel cross genetic mating, conduct field planting and character investigation on the prepared hybrid combination, and measure the yield of plots after maturation; Ability analysis, calculating the special combining ability of the hybrid combination, using the relative effect of the special combining ability to predict the yield stability of the hybrid japonica rice combination; combining the comprehensive performance of yield, quality and agronomic traits to select high-yield, high-quality, stable yield, and excellent comprehensive agronomic traits hybrid japonica rice combination. The method can improve the breeding efficiency of hybrid japonica rice combinations with excellent stable yield, shorten the breeding period, and accelerate the popularization process of new high-yield, high-quality and stable-yield hybrid japonica rice combinations.

Description

technical field [0001] The invention relates to the technical field of crop breeding, in particular to a method for predicting yield stability of hybrid japonica rice combinations. Background technique [0002] Rice is the main food crop in my country and plays an important role in ensuring national food security. The promotion and application of hybrid rice has made great contributions to the food production in my country and the world. At present, the planting area of ​​hybrid rice in my country accounts for 53% of the total rice cropping area, but the planting area of ​​hybrid japonica rice only accounts for 3% to 5% of the planting area of ​​japonica rice. Although hybrid japonica rice and hybrid indica rice achieved three-line matching almost at the same time, compared with hybrid indica rice, hybrid japonica rice developed slowly. Heterosis is a common phenomenon in the biological world. Hybrid japonica rice has the same heterosis as hybrid indica rice. Moreover, hyb...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01H1/02A01H1/04
CPCA01H1/02A01H1/04
Inventor 牛付安曹黎明程灿周继华储黄伟
Owner SHANGHAI ACAD OF AGRI SCI
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