Prediction method of yield stability of hybrid round-grained nonglutinous rice combinations

A technology for stability prediction and hybrid japonica rice, applied in the direction of botanical equipment and methods, application, plant gene improvement, etc., to achieve the effect of comprehensive agronomic traits, high yield, and reduce the work of multi-point identification
CN108651269AActive Publication Date: 2018-10-16SHANGHAI ACAD OF AGRI SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANGHAI ACAD OF AGRI SCI
Publication Date
2018-10-16

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Abstract

The invention relates to a prediction method of yield stability of hybrid round-grained nonglutinous rice combinations. The prediction method of the yield stability of the hybrid round-grained nonglutinous rice combinations comprises the following steps: preparing hybrid combinations by utilizing selected round-grained nonglutinous rice restorerlines and BT-type round-grained nonglutinous rice sterility lines by adopting an incomplete diallel-cross genetic mating design; performing field planting and character investigation on the prepared hybrid combinations, and carrying out small-area yieldtesting when the hybrid round-grained nonglutinous rice combinations are ripe; carrying out combining ability analysis so as to figure out special combining ability of the hybrid combinations, and carrying out yield stability prediction on the hybrid round-grained nonglutinous rice combinations by utilizing relative effects of the special combining ability; and then, screening out a hybrid round-grained nonglutinous rice combination with high yield, good quality, stable yield and excellent comprehensive agronomic traits by performing evaluation on comprehensive performance of yield, quality and comprehensive agronomic traits. The prediction method of the yield stability of the hybrid round-grained nonglutinous rice combinations is capable of improving selection efficiency of the hybrid round-grained nonglutinous rice combinations with excellent stability, shortening years of breeding, and accelerating promotion of novel hybrid round-grained nonglutinous rice combinations with high yield, good quality and excellent stability.
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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 area of ​​rice, but the planting area of ​​hybrid japonica rice can only account 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, hybr...

Claims

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