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Studies on Response to Photoperiod and Temperature of the Photoperiod Sensitive Genie Male Sterile Rice(PGMSR)II.Identification of japonica PGMSR in growth chambers

Zongxi Sun

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Abstract

The effects of photoperiod and temperature on fertility of Nongken 58S and its derivedPGMSRs (subsp. japonica) were studied in artificially controlled condition. The results indicated thatboth photoperiod and temperature affected PGMSRs' fertility. The PGMSRs were sterile or nearly ster-ile in the treatment combination with long photoperiod (15. 0h) and high temperature (29. 6℃), andtheir fertility was higher in the treatment combination with short photoperiod (12. 0h) and low tempera-ture (23. 6℃). The alternation in the fertility of PGMSRs occurred under the treatment combinations with15. 0h/ 23. 6℃ and 12. 0h/ 29. 6℃ in growth chambers. The influence of genetic background onPGMSRs' fertility was also observed. The experiment result will supply a base of knowledge to explainwhy the sterility of PGMSRs was unstable in summer and their fertility was not high enough in autumn inthe field.

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What this paper is about

The effects of photoperiod and temperature on fertility of Nongken 58S and its derivedPGMSRs (subsp. japonica) were studied in artificially controlled condition. The results indicated thatboth photoperiod and temperature affected PGMSRs' fertility. The PGMSRs were sterile or nearly ster-ile in the treatment combination with long photoperiod (15. 0h) and high temperature (29. 6℃), andtheir fertility was higher in the treatment combination with short photoperiod (12. 0h) and low tempera-ture (23. 6℃). The alternation in the fertility of PGMSRs occurred under the treatment combinations with15. 0h/ 23. 6℃ and 12. 0h/ 29. 6℃ in growth chambers. The influence of genetic background onPGMSRs' fertility was also observed. The experiment result will supply a base of knowledge to explainwhy the sterility of PGMSRs was unstable in summer and their fertility was not high enough in autumn inthe field.

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Available abstract

The effects of photoperiod and temperature on fertility of Nongken 58S and its derivedPGMSRs (subsp. japonica) were studied in artificially controlled condition. The results indicated thatboth photoperiod and temperature affected PGMSRs' fertility. The PGMSRs were sterile or nearly ster-ile in the treatment combination with long photoperiod (15. 0h) and high temperature (29. 6℃), andtheir fertility was higher in the treatment combination with short photoperiod (12. 0h) and low tempera-ture (23. 6℃). The alternation in the fertility of PGMSRs occurred under the treatment combinations with15. 0h/ 23. 6℃ and 12. 0h/ 29. 6℃ in growth chambers. The influence of genetic background onPGMSRs' fertility was also observed. The experiment result will supply a base of knowledge to explainwhy the sterility of PGMSRs was unstable in summer and their fertility was not high enough in autumn inthe field.

Key concepts: photoperiodism, Fertility, Sterility, Biology, Japonica, Male fertility, Horticulture, Japonica rice

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Studies on Response to Photoperiod and Temperature of the Photoperiod Sensitive Genie Male Sterile Rice(PGMSR)II.Identification of japonica PGMSR in growth chambers — Research Paper | ScholarLens